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LI Zhimin, YUAN Hongsheng, WANG Yan, YAN Wei, WANG Fengliu, ZHU Peiying, LI Wengui
2025,44(2):1-5, DOI: 10.7606/j.issn.1004-6704.2025.02.001
Abstract:
RT-PCR and ELISA techniques were used to analyze the prevalence of porcine reproductive and respiratory syndrome in Dali using 4 800 porcine lungs and spleens collected from various districts of Dali as experimental materials.After RNA extraction,concentration detection,reverse transcription,RT-PCR amplification,agarose gel electrophoresis detection,sequencing,and phylogenetic evolution tree analysis of the strains sequences.The results showed that:(1)There were 5 positive samples,while the remaining 4 795 samples were negative,with a positive rate of only 0.104%.(2)Sequencing comparison of the positive samples revealed that they were all highly pathogenic PRRSV infections.(3)After Nsp2 gene sequencing,sequence comparison and phylogenetic tree analysis,all 5 samples belonged to the JXA1 strain.The study found that the prevalent strain of PRRSV in Dali is the JXA1 strain,which is currently well prevented and controlled.Due to the continuous emergence of mutant strains,there is leakage of commercially available commercial testing reagents,and specific testing methods should be established based on molecular epidemiological information to avoid leakage in the monitoring work.In addition,the use of vaccines for prevention and control should be scientifically and rationally selected,and biosecurity measures and regulation of pig introduction and transfer should be strictly done.
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2025,44(2):6-12, DOI: 10.7606/j.issn.1004-6704.2025.02.002
Abstract:
The study introduces one case of acute nephritis in the Garfield cat,which exhibited symptoms such as reduced abdominal circumference,sensitivity and pain in the kidney area,arched back when standing,frequent urination,but with small amounts each time.The study introduces the basic information of this case,including general clinical examination,X ray,B ultrasound,and laboratory examination,and provides a comprehensive analysis of the result,so that we can exclude any other possible disease and eventually the cat was diagnosed with acute nephritis and doubtedly associated with pancreatitis.With rational drug use and the principle of protection of the kidney and diuresis,we take active treatment,including immunosuppression,eliminate inflammation,infection control,diuretic therapy and symptomatic treatment,and the cat recovered in ten days.Finally,the study discusses the etiology,diagnosis,and treatment process of this disease,and put forward some practical suggestions on the effective treatment and clinical medication.In conclusion,it is hoped that it will be helpful for animals with acute nephritis.
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HAI Li, SONG Yue, AN Yawen, CHEN Linfang, HAI Nisige, WANG Na, DAI Lingli, CHEN Liangting, QIAN Linna, YANG Bin, SA Ruli
2025,44(2):13-18, DOI: 10.7606/j.issn.1004-6704.2025.02.003
Abstract:
This study employed PCR molecular biology techniques and bacterial isolation identification methods to investigate skin tissue and purulent fluid samples from diseased sheep in a farm.The results indicated that:(1)None of the four scab samples tested positive for sheep pox,contagious ecthyma,or foot and mouth disease virus;(2)Bacterial isolation and identification from the two samples of purulent fluid revealed the presence of Staphylococcus aureus,which was found to be sensitive to several antibiotics,but resistant to penicillin and ampicillin.The study concludes that the primary pathogenic bacteria in this case of sheep foot-and-mouth purulent abscess are Staphylococcus aureus,and it is recommended that the farm strengthen monitoring and prevention measures against this pathogen,while formulating a reasonable treatment plan based on the antibiotic sensitivity test results.
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LUO Dandan, LU Zhiping, FU Anjing, WEN Yongping
2025,44(2):19-26, DOI: 10.7606/j.issn.1004-6704.2025.02.004
Abstract:
Salmonella is the zoonotic pathogen within the family Enterobacteriaceae,which has important public health implications because Salmonella-contaminated poultry products are the most important sources of human Salmonella infection.The resistance of Salmonella is changing from year to year due to the long-term use and abuse of antimicrobials,the spread of resistance genes in Salmonella,and the changes in environmental and host factors.Therefore,in order to find out the change of antimicrobial resistance of Salmonella in different regions and different years,the literatures about antimicrobial resistance of avian-origin Salmonella published at home and abroad during 2011-2023 were reviewed in this paper,and finally it can guide the clinical rational drug use and control the epidemic of Salmonella.
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2025,44(2):27-30, DOI: 10.7606/j.issn.1004-6704.2025.02.005
Abstract:
Oesophagostomum mainly parasitize the colon and intestinal lumen of cattle and sheep,and are widely prevalent in cattle and sheep across various parts of China.Infected animals exhibit symptoms such as hunchback,abdominal pain,and stubborn diarrhea.Autopsy reveals colonic wall nodules,intestinal wall rupture,and even peritonitis.Saturated saltwater floating method can detect pale yellow oval eggs,which can be preliminarily diagnosed based on clinical symptoms and egg morphology characteristics.Pathological autopsy reveals intestinal wall nodules and PCR testing can confirm the diagnosis.Oesophagostomum can cause intestinal lesions,leading to the inability to make intestinal casings and reducing the economic benefits of animal husbandry.o prevent and control this disease,a comprehensive approach can be adopted,including avoiding grazing during early morning and evening,treating cattle and sheep manure to ensure it is harmless,and maintaining hygiene in forage and drinking water.
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Nieerqiuxiu, JIAN Yingna, Pengmaozhuoma, WANG Zhijun, LI Zhi, FU Yong, DUO Hong, ZHANG Xueyong
2025,44(2):31-36, DOI: 10.7606/j.issn.1004-6704.2025.02.006
Abstract:
From April to June 2024,calves at a yak farming cooperative in Gande,Qinghai,showed clinical symptoms such as depression,weight loss,and diarrhea.To confirm the causes of the disease,10 samples,including anal swabs and feces from diarrhetic calves,were collected.PCR method was used to detect bovine coronavirus,bovine rotavirus,bovine viral diarrhoea virus,bovine adenovirus,bovine enterovirus,bovine torovirus,bovine norovirus,bovine nebovirus,Eimeria spp.,Cryptosporidium spp.,and Giardia.The results showed that bovine coronavirus was detected in all 10 diarrheic fecal samples,while no other pathogens were found.The results indicated that the diarrhoea in the calves at the cooperative was caused by bovine coronavirus infection.After diarrhoea occuring in calves,rehydration fluid can be injected intravenously,the use of traditional Chinese medicine to strengthen the heart,while the use of appropriate antibiotic for the prevention of bacterial pathogens secondary infections,nutritional management should be strengthened,immunity should be enhanced,environmental stress should be reduced,and attention should be paid to disinfestation of pens to reduce exposure to contaminated environments,which can be effective in the treatment and prevention of the purpose of the control.The present study provides a references for the prevention and control of diarrhoea in calves in this cooperative.
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LIU Yu, BAI Tianjun, WANG Shufang, WANG Fucai, HE Jingui
2025,44(2):37-39, DOI: 10.7606/j.issn.1004-6704.2025.02.007
Abstract:
In order to strengthen the protection of livestock and poultry resources and promote the rapid development of Chakouyi horse industry,and provide technical guidance for the prevention and control of horse disease.As one of the important contents of the general survey of equine protozoonosis,the detection of equine toxoplasmosis was carried out in the whole county.Blood samples were collected from horse veins,and the serum was centrifuged.Indirect hemagglutination test(IHAT) was used to detect the Toxoplasma gondii infection antibody in horse serum qualitatively and quantitatively.240 horse blood samples were sampled from 12 towns.The results showed that 9 samples were positive for antibodies,with a positive rate of 3.75%.Among these,20 samples were collected from Qilian town,5 of which were positive,resulting in a positivity rate of 25.0%.In the 240 samples tested,the serum antibody titers of 0,1∶4,1∶16 and 1∶64 were 88,78,65 and 9 samples respectively.The test results show that toxoplasmosis in horse in Tianzhu county has been epidemic among equine animals within the controllable and safe range over many years,which has not had a serious impact on the development of horse industry in Tianzhu county.However,this testing work remains an important supplement to the prevention and control of zoonotic infectious diseases in Tianzhu county.
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2025,44(2):40-42, DOI: 10.7606/j.issn.1004-6704.2025.02.008
Abstract:
African swine fever is a serious infectious disease that spreads extremely fast and is difficult to control.Once it occurs,it will cause huge losses to pig production.This paper summarizes and discusses the discovery,laboratory diagnosis,treatment measures,social impact,and future prevention and control strategy,aims to take,improve disease prevention and control work,improve the animal epidemic prevention system construction,establish the epidemic monitoring system,strengthen quarantine supervision comprehensive law enforcement,in order to provide reference for disease prevention and control and agricultural supervision and law enforcement personnel to deal with similar incidents.In the future prevention and control work,we will continue to adhere to the principle of prevention first and scientific prevention and control,and strengthen monitoring and early warning,emergency response,strengthen training and peripheral cooperation.
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2025,44(2):43-46, DOI: 10.7606/j.issn.1004-6704.2025.02.009
Abstract:
The harmless treatment of dead and diseased livestock and poultry is crucial for public health safety,environmental protection and food safety.It plays a significant role in ensuring the quality and safety of livestock and poultry products and the healthy development of animal husbandry.In recent years,Huize county insists on leading the high-quality development of animal husbandry with green development,constantly innovates working ideas,improves the harmless treatment system,and continuously improves the harmless treatment capacity.However,to varying degrees,there are problems such as non-standard disposal methods,imperfect processing systems,unreasonable compensation mechanisms,difficult supervision and law enforcement,and single forms of resource reuse.Based on the actual situation of Huize county,this paper analyzes the current situation and existing problems,and puts forward a feasible scheme to improve the collection,processing,utilization and supervision.These solutions can serve as a reference for other regions.
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2025,44(2):47-48, DOI: 10.7606/j.issn.1004-6704.2025.02.010
Abstract:
The incidence of lamb diarrhea is high in front-line clinical production,and the loss is also large.The causes of lamb diarrhea are various,such as feeding management,weather changes,nutrition,etc.Therefore,the comprehensive prevention and control of lamb diarrhea should also be started in many aspects,and the comprehensive prevention and control of “breeding,prevention,detection and treatment” should be achieved to reduce the occurrence of lamb diarrhea.
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NIE Fuxu, WANG Xingchao, DING Yaozhong, LIU Genxin, LIU Chen, YANG Qin, WANG Wenjing, WANG Hemei
2025,44(2):49-55, DOI: 10.7606/j.issn.1004-6704.2025.02.011
Abstract:
The experiment aimed to investigate the effects of three probiotic fermented traditional Chinese medicine preparations on the production performance,serum biochemical indices and immune function of weaned lambs.A total of 100 small-tailed Han sheep with similar appearance and body weight(15.19±0.81) kg were selected and randomly divided into 5 groups,with 4 replicates in each group and 5 sheep in each replicate.Group Ⅰ,Ⅱ,Ⅲ and Ⅳ were supplemented with 0%,0.5%,1.0% and 1.5% fermented traditional Chinese medicine preparations to the basic diet,while group Ⅴ were added 1.0% pure compound herbal supplements to the basic diet,with a pre-trial period of 3 days and a main trial period of 40 days.The results showed that the average body weight of the test groups Ⅲ,Ⅳ,and Ⅴ was significantly higher than that of the control group(P<0.05),and there was a significant difference between group Ⅱ and Ⅳ(P<0.05);the ADG of the test groups Ⅱ,Ⅲ,Ⅳ,and Ⅴ was significantly higher than that of the control group(P<0.05),and there were significant differences between groups Ⅱ,Ⅲ,Ⅳ,and Ⅴ and group Ⅱ(P<0.05),and between groups Ⅳ and Ⅲ,and Ⅴ(P<0.05);the ADFI of the test groups Ⅲ,Ⅳ,and Ⅴ was significantly higher than that of the control group(P<0.05),and there was a significant difference between groups Ⅱ and Ⅳ(P<0.05).The TP content of the test groups Ⅲ,Ⅳ,and Ⅴ was significantly higher than that of the control group(P<0.05);the GLO content of the test groups Ⅲ,Ⅳ,and Ⅴ was significantly higher than that of the control group(P<0.05),and there was a significant difference between groups Ⅲ and Ⅰ,Ⅱ(P<0.05);the ALP content of group Ⅲ was significantly higher than that of the control group(P<0.05).The IL 2 content of groups Ⅲ and Ⅳ was significantly higher than that of the control group(P<0.05),and there was a significant difference between groups Ⅲ,Ⅳ and Ⅱ(P<0.05);the IgA content of the test groups Ⅱ,Ⅲ,Ⅳ,and Ⅴ was significantly higher than that of the control group(P<0.05),and there were significant differences between groups Ⅲ,Ⅳ and Ⅱ,Ⅴ(P<0.05);the IgG content of group Ⅲ was significantly higher than that of the control group(P<0.05),and there was a significant difference between groups Ⅱ and Ⅲ(P<0.05).In conclusion,the three probiotic fermented traditional Chinese medicine preparations can significantly improve the productive performance and immune function of weaned lambs,and can also improve their blood biochemical indicators,with the optimal addition ratio is 1.0%.
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GAO Shikong, DU Xiangpeng, XIANG Yanlong, WANG Zhangang, WEN Zhiyi, WANG Shunshan, MA Wentao
2025,44(2):56-61, DOI: 10.7606/j.issn.1004-6704.2025.02.012
Abstract:
This study aimed to isolate and screen Bacillus subtilis strains with exceptional probiotic properties,thereby providing a theoretical foundation for the development and application of microbial ecological agents in dairy goat farming.The research team successfully isolated three Bacillus strains from fecal samples of healthy,high-yielding dairy goats in Shenmu city,Shaanxi province,identifying them as Bacillus subtilis through both morphological and molecular biological techniques.Subsequently,the in vitro safety,efficacy,and feasibility of these strains were analyzed,including hemolysis assays,antibiotic susceptibility tests,antibacterial activity assessments,and simulated gastrointestinal tolerance experiments.The results are summarized as follows:(1)The results indicated that none of the strains exhibited hemolytic activity while demonstrating favorable drug sensitivity profiles.(2)They effectively inhibited common mastitis pathogens such as Staphylococcus aureus,Bacillus coagulans and Escherichia coli.(3)These strains displayed robust acid resistance along with significant tolerance to gastric protease and trypsin.In conclusion,the three isolated Bacillus subtilis strains (L1-1,L3-1,and L3-2) exhibit promising in vitro probiotic characteristics that position them as potential candidates for microbial probiotics in goat dairy farming;this offers new opportunities for enhancing both health outcomes and economic benefits within this sector.
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HE Jun, LI Xuezhao, CHEN Litao, WANG Xinian, DONG Weisheng, YANG Hongmei, HE Zhiyang
2025,44(2):62-67, DOI: 10.7606/j.issn.1004-6704.2025.02.013
Abstract:
To screen for the optimal meat sheep crossbreeding combinations suitable for the Wuwei,the binary and ternary crossbreeding experiments were carried out with Australian white sheep,Suffolk sheep and Dorper sheep as male parent and Hu sheep as female parent.The results show that:(1)The birth weight of F1 generation from Australian white×Hu sheep,Dolper×Hu sheep,Suffolk×Hu sheep,Australian white×Dolper×Hu sheep and Suffolk×Dolper×Hu sheep group was significantly higher than that of Hu sheep group(P＜0.05),the body weight of F1 generation at 1 month and 3 month of age were significantly higher than those of Hu sheep group (P＜0.01),and the body weight of F3 generation at 6 months old from Australian white×Hu sheep,Dolper×Hu sheep,Australian white×Dolper×Hu sheep,Suffolk×Dolper×Hu sheep was significantly higher compared with Hu sheep group (P＜0.01).The Suffolk×Hu sheep group was significantly higher than Hu sheep group(P＜0.05).(2)The pre-slaughter weight,carcass weight and net meat weight of F1 offspring from Australian white×Hu sheep,Dolper×Hu sheep,Australian white×Dolper×Hu sheep and Suffolk×Dolper×Hu sheep were significantly higher than those of the Hu sheep group(P＜0.01).The pre-slaughter weight,carcass weight,and net meat weight of Suffolk×Hu sheep were significantly higher than those of the Hu sheep group(P<0.05).The slaughter rate of all five crossbreeding combinations was significantly higher than that of the Hu sheep group(P<0.05),and the net meat ratio,meat-to-bone ratio,and eye muscle area were significantly higher(P<0.01).(3)The marbling of F1 offspring from Australian white×Hu sheep,Australian white×Dolper×Hu sheep and Suffolk×Dolper×Hu sheep were significantly higher than those of the Hu sheep group(P<0.05).The drip loss of Australian white×Dolper×Hu sheep and Suffolk×Dolper×Hu sheep was significantly lower than that of the other groups(P<0.05),and the cooked meat yield was significantly higher than that of the other groups(P<0.05).The results of crossbreeding experiments with Australian white ram,Duper ram,Suffolk ram and Hu sheep are obvious,and can be vigorously promoted in regions with similar ecological conditions.
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LIU Tao, LIU Yuping, YUE Guangyang, SU Xu, JIN Jiarui, YU Mingjun, ZHU Di
2025,44(2):68-81, DOI: 10.7606/j.issn.1004-6704.2025.02.014
Abstract:
The low nutrient content of soil in desert ecosystems,combined with harsh climatic conditions,causes plants to develop unique physiological and ecological traits under environmental stress,forming the basis for the diversity and stability of desert ecosystems.However,the relationship between soil and plant biomass allocation in the Qaidam Basin and its role in maintaining desert grassland ecosystem stability remains unclear.This study analyzed the distribution characteristics of soil particle size and plant species diversity along the aridity gradient in 35 sampling sites with 175 quadrats and 86 dominant plant species in the Qaidam Basin,using methods such as plant species reordering,allometric growth relationships,variance decomposition,and structural equation modeling.It also investigated the relationship between soil nutrients and aboveground and belowground biomass of plants,and their effects on ecosystem stability.The results showed that:(1)Species richness across the 35 sites in the Qaidam Basin displays distinct environmental gradient characteristics.Perennial dominant species have significantly higher aboveground biomass compared to annual species(P<0.01),indicating that the allometric growth relationships between aboveground and belowground biomass of perennial shrubs and semi shrubs are not significant(P=0.885),whereas annual dominant species allocate more biomass belowground than aboveground.(2)Stepwise regression identified seven climatic factors affecting the distribution of dominant species,and their influence on the aboveground biomass of perennial shrubs and semi-shrubs(variance decomposition R2=0.318 for aboveground biomass) was greater than their influence on belowground biomass(R2=0.01 for belowground biomass).Elevation had no significant direct effect on aboveground or belowground biomass,but the structural equation model demonstrated that elevation indirectly affects the biomass of dominant species.This indicates that altitude driven changes in water and heat conditions,along with extreme climate events(such as isothermality,precipitation in the coldest season,and precipitation in the wettest month and season),have significant positive and negative impacts on biomass,while soil particle size has no significant effect.
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LI Pengxia, SU Shengyan, SHI Hongmei, NIU Shuliang, Dingkaorenqing, Cairangnaori, KONG Xiangdong
2025,44(2):82-85, DOI: 10.7606/j.issn.1004-6704.2025.02.015
Abstract:
The purpose of this experiment is to explore the application of yak dry grass period house feeding technology in Banma county.Through 6-month house feeding of 3-year-old male yaks and 3-year-old yaksthe average weight gain per yak was 74.83 kg and 106.31 kg,respectively.The weight gain effect of the yaks group in experiment Ⅱ was much greater than that of the male yaks group in experiment Ⅰ.Excluding feeding costs,the weight gain benefit of yaks was 195.13 yuan/head,and that of yaks was -528.91 yuan/head,with yaks earning 724.04 yuan/head more than yaks.The results showed that under the same feeding and management conditions during the cold season and dry season,the feed return of yaks was much higher than that of male yaks,and yaks were more conducive to staggered feeding,fattening,and slaughter.
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YANG Liping, JIA Wenyu, SONG Fuchao
2025,44(2):86-88, DOI: 10.7606/j.issn.1004-6704.2025.02.016
Abstract:
Zhangye city has a long history of horse breeding.Located in Shandan county,Zhongnongfa Shandan Horse Farm has a horse breeding history of more than two thousand years since the Han Dynasty.After the founding of New China,the Shandan Horse Farm provided a large number of warhorses for the army.In recent years,with the development of the economy and society,the rise of the pregnant horse serum industry has gradually formed a pregnant horse industry chain mainly consisting of Shandan county,Gaotai county,and Minle county for pregnant horse breeding,collection,and processing.Based on field investigations of the current development status of the pregnant horse serum industry in Zhangye city,this article analyzes the industry's prospects,advantages,and challenges such as the continuous rise in feed costs,a shortage of professional and technical personnel,narrow product sales channels,and problems with narrow product sales channels.It also proposes development suggestions including increasing policy support,strengthening scientific and technological research,enhancing product competitiveness,and promoting deep integration of the industrial chain.
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KONG Chuiyong, ZHAO Yongzhong, DUAN Junhong
2025,44(2):89-92, DOI: 10.7606/j.issn.1004-6704.2025.02.017
Abstract:
According to the current situation of dairy cow and beef cattle industry and the characteristics of Holstein male calves,the fattening experiment of male calves was carried out to realize the coordinated development of milk and meat.A total of 86 dairy male calves aged 12-13 months,14-15 months,16-17 months and 18-19 months were selected for fattening tests to determine feed intake,daily gain and slaughter performance.The results showed that after 45 days of fattening,the daily weight gain of calves aged 16-17 month old was up to 1.69 kg/d,which was 36.3%,22.46% and 19.86% higher than that of calves aged 12-13 month old,14-15 month old and 18-19 month old,respectively.Within the range of normal dietary nutrition level,increasing dietary nutrition level and extending fusing time could moderately improve the slaughter rate and net meat rate,but the improvement range was not significant.The slaughter rate and net meat rate of experimental group with average body weight of 567.97 kg were the highest,reaching 56.78% and 46.02%.According to the analysis of experimental data,the daily gain of dairy male calves increased slowly after fattening at 18 months of age,which decreased compared with 16-17 months of age.At the same time,the feeding cost continued to increase,and the daily profit margin narrowed.The results of this experiment showed that when the male calves were fattened to more than 500 kg at 18 months of age,it was the most suitable for the breeding.
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ZHANG Tanying, ZHANG Haibin, MU Tiange, YANG Lingping, GAO Ga, MA Denglu, ZHANG Hongxia, WEN Zhiping
2025,44(2):93-96, DOI: 10.7606/j.issn.1004-6704.2025.02.018
Abstract:
In order to study the feeding effect of different breeding methods on Gannan yak calves,90 newborn calves with similar age and body condition were randomly selected,30 calves in each group,which were divided into experimental group 1(early weaning at 3 months of age+supplemental feeding+grazing),experimental group 2(full lactation+supplemental feeding+grazing at 6 months of age),and control group(traditional grazing) according to the different lactation methods.At 6 months of age,the weight of calves in group 2 was 52.47 kg,and the chest circumference was 99.7 cm,which was 8.44 and 13.43 kg higher and 9.11 and 25.56 cm taller than that of group 1 and the control group respectively.The average daily weight gain was 0.263 kg,which was 0.033 and 0.049 kg more than that of group 1 and the control group respectively.At 12 months of age,the weight reached 95.16 kg,the chest circumference reached 114.2 cm,the weight gained was 16.56 and 31.08 kg,the height was 8.89 and 17.45 cm,and the average daily weight gain was 0.371 kg,which was 0.032 and 0.135 kg more than that of the group 1 and the control group,respectively.The results showed that in the semi-agricultural and semi-pastoral areas of Gannan,yak calves bred with full lactation before the age of 6 months had good growth and development,and the effect of weight gain was good,leading to significant weight gains and contributing to the cultivation of high-quality yaks,thereby enhancing the production performance of yaks.
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CHEN Boxiang, WANG Jia, ZHAO Zihui, YANG Ming, TANG Yunjiao
2025,44(2):97-102, DOI: 10.7606/j.issn.1004-6704.2025.02.019
Abstract:
In recent years,Bovine viral diarrheal disease/mucosal disease(BVD-MD) has been widely prevalent both domestically and internationally,causing serious harm to the cattle industry.It is difficult to differentiate BVD-MD from other diarrheal diseases only by clinical symptoms and pathological changes.In order to diagnose and purify BVD-MD,it is very important to choose the best detection method.In practical applications,the choice of suitable testing methods should consider various testing purposes comprehensively.This article provides a comprehensive review of BVDV pathogens,prevalent strains,and recent advancements in detection methods to serve as a reference for epidemiological investigations,pathogenic mechanisms,detection,and prevention of bovine viral diarrhea/mucosal disease.
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FENG Na, LIU Xiaodong, LIU Keke, ZHANG Dongdong, MIAO Xiaorong, LI Yixuan
2025,44(2):103-106, DOI: 10.7606/j.issn.1004-6704.2025.02.020
Abstract:
With the development of molecular biotechnology,a new animal breeding method molecular breeding came into being in 2001.This technology makes up for the shortcomings of traditional breeding methods,and has the advantages of shortening generation interval and reducing breeding cost.As an important part of animal husbandry industry,sheep breeding faces urgent problem that urgent solution.Therefore,this paper reviewed the principles,algorithms and genotyping methods of genome selection,and summarized the application of genome selection technology in sheep breeding and the challenges faced during its application,aiming to provide theoretical reference for future research in sheep breeding.
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2025,44(2):107-110, DOI: 10.7606/j.issn.1004-6704.2025.02.021
Abstract:
In the light of the reduction of veterinary antibiotics and the reports that veterinary drug residues were detected or exceeded in the sampling of animal products(eggs) in recent years.According to the actual situation of livestock and poultry farming in Jiayuguan city.To specifically monitor and analyze the major bacterial diseases of layers.The necessity and feasibility of carrying out local thematic research were put forward.
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2025,44(2):111-113, DOI: 10.7606/j.issn.1004-6704.2025.02.022
Abstract:
Veterinary drug is an important input in animal husbandry,and the management of veterinary drug is the guarantee of the quality and safety of veterinary drug.With the healthy development of breeding industry,the management and use of veterinary drugs tend to be standardized,but there are still many problems in the management and use of veterinary drugs,such as weak supervision,business order disorder,etc.To address these issues,effective solutions are proposed to further improve the veterinary drug operations and usage at the grassroots level in Dingxi.
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ZHAO Guoshun, ZHU Yanjun, MA Ping, FAN Jinlong
2025,44(2):114-116, DOI: 10.7606/j.issn.1004-6704.2025.02.023
Abstract:
With the increasingly severe global food safety issues,especially the potential threat of antibiotic abuse to human health and the ecological environment,antibiotic-free laying hens have become an important issue in the development of modern animal husbandry.The article explores the development status,basic technologies,and successful cases of antibiotic free breeding of laying hens,in order to provide reference for achieving antibiotic-free breeding of laying hens.
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2025,44(2):117-119, DOI: 10.7606/j.issn.1004-6704.2025.02.024
Abstract:
Fowlpox is an acute and highly contagious disease caused by the fowlpox virus.The disease manifests in several clinical forms,including cutaneous,mucosal,and mixed types.The cutaneous type is characterized by the appearance of acne-like lesions on the head,comb,wattles,and featherless or less-feathered areas under the wings,which progress to scabs and eventually shed.The mucosal type is marked by necrotizing inflammation of the oral and pharyngeal mucosa,forming of pseudomembranes.Although the mortality rate of fowlpox is generally low,the disease can significantly affect infected chickens by slowing growth,reducing egg production,and lowering hatchability.Secondary infections with other pathogens and poor feeding conditions,including malnutrition,can exacerbate the disease,potentially leading to large-scale mortality.Immunization is the primary method for preventing and controlling fowlpox.However,large-scale outbreaks have continued in recent years.Analysis of clinical cases indicates that poor feeding environments are a major contributing factor to these outbreaks.Therefore,to enhance disease prevention and control,it is essential to strengthen feeding management,conduct regular environmental disinfection,maintain proper ventilation,and strengthen the overall health and immunity of the chickens.
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ZHANG Shenggang, HU Xinan, REN Baohua, WANG Xuezhu, FU Naian, LI Baohui, LI Wulin
2025,44(2):120-122, DOI: 10.7606/j.issn.1004-6704.2025.02.025
Abstract:
With the increasing number of households engaged in large-scale captive feeding of dairy goats,the occurrence of latent mastitis in the herds is constantly increasing,seriously endangering the health of the dairy goats,resulting in decreased in milk production and declined in the economic benefits of farmers.The author combines clinical breeding experience and grassroots practice,adopts traditional detection methods such as bacterial culture and CMT for diagnosis and testing,and proposes preventive and control measures:(1)Preventing and treating the incidence of latent mastitis through nipple medicated baths before and after milking.(2)For dairy goats with hidden mastitis,antibiotics should be used for timely treatment after milking.(3)By drinking and applying traditional Chinese medicine internally and externally,deworming during the dry milk period can improve the immune function of dairy goats.Thereby reducing the occurrence and harm of mastitis in dairy goats,increasing the economic benefits of breeding,and providing reference and guidance for the high-quality development of the dairy goat industry.
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ZHANG Wenhao, ZHANG Zeyan, LIN Mengmeng
2025,44(2):123-127, DOI: 10.7606/j.issn.1004-6704.2025.02.026
Abstract:
In order to comprehensively improve the competitiveness of animal husbandry-related products from Tianshui city in both domestic and international markets.This study conducted a comprehensive investigation on the current status of livestock product brand development in Tianshui by visiting enterprises of livestock and poultry breeding and slaughtering,breeding cooperatives,and workers engaged in livestock product brand certification from Qinzhou district,Qingshui county,Zhangjiachuan county,and other counties and districts.Furthermore,this study conducted an in-depth analysis of the problems faced by the development of the industry,and further combined with the goal of high-quality development of animal husbandry,proposed development ideas and countermeasures for the city’s livestock product brands,and put forward effective measures for the high-quality development of animal husbandry in Tianshui city.
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SHANG Xiaosheng, CHEN Xin, Jiayangdongzhi, XIN Xiaoyun, SUN Zhiying
2025,44(2):128-132, DOI: 10.7606/j.issn.1004-6704.2025.02.027
Abstract:
Under the dual influence of natural and human factors,the area of desertified grassland in Maqu has reached 5.53×104 hm2.The hazards caused by grassland desertification gradually have emerged,including decreased vegetation coverage,decreased natural grassland and grass output,weakened water conservation capacity,reduced wetland area,decreased soil erosion intensified,sharp decline in biodiversity,disrupted ecological balance,and hindered economic development.Therefore,this paper proposes a “grass irrigation combination” model to treat desertified grasslands,involving measures such as rodent control,rodent extermination,land preparation,fertilization,re-planting,and enclosure to restore desertified grasslands.Set up a grass grid model to control mobile sand dunes,and restore them through measures such as sand dune sorting,planting suitable shrubs,mixing and planting grass seeds in shrub windbreak zones,grass grid planting,sealing and grazing prohibition.The successful experimental units of two management models provide a basis and reference for the ecological restoration of grasslands in the upper reaches of the Yellow River.
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2025,44(2):133-137, DOI: 10.7606/j.issn.1004-6704.2025.02.028
Abstract:
Under the background of the rapid development of information technology,it is a new trend of experimental teaching reform to develop towards information and intelligence.The animal medicine major of Guangxi University has constructed the smart teaching model of animal anatomy experiments by building smart laboratory and digital teaching resources,expanding knowledge points,and taking “superstar” as teaching platform.The smart teaching model solves the teaching problems such as poor experimental teaching environment,single teaching model,one-sided evaluation,insufficient teaching resources,and difficult to carry out some experiments in the past.It systematically promotes the construction of experimental teaching information,improving the teaching quality and contributing to the cultivation of students’ ability.
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WANG Xinian, ZHANG Xi, WANG Luju, GUO Zhiming
2025,44(2):138-141, DOI: 10.7606/j.issn.1004-6704.2025.02.029
Abstract:
The integration of science and education is a new direction and new driving force for the development of vocational education in the new era.Promoting the integration of science and education will help optimize the personnel training model,strengthen the cooperation between industry,university and research,train innovative technical talents,and realize the coordination of education and science and technology.Taking the teaching of Modern Sheep Raising Technology as an example,this paper discusses how to reform and practice the curriculum teaching system,teaching methods,curriculum practice links and science and technology innovation platform in the course of ideological and political implementation,cultivate animal husbandry and veterinary professionals with comprehensive qualities such as digital ability,innovative spirit and practical ability,and promote the continuous development of modern animal husbandry.
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2025,44(2):142-146, DOI: 10.7606/j.issn.1004-6704.2025.02.030
Abstract:
Under the background of “Curriculum Ideological and Political”,promoting the realization of the goal of talent training by the ideological and political education is the key content of the current college education.As the core force of college education,college counselors and specialized teachers shoulder the important mission of transmitting the socialist core values.In the new ideological education environment,accelerating the construction of collaborative education mechanism to enable college counselors and subject teachers to jointly advance ideological and political education is not only a necessary path to achieve “holistic education”(which refers to educating the whole person,for the whole society,and throughout the entire process),but it can also further promote the development of ideological and political work teams,enhance the precision of ideological and political education,and play a significant role in promoting the realization of higher education institutions’ talent cultivation goals.Based on this,this article summarizes the basic connotation of collaborative education,expounds the college counselors and professional teachers collaborative education work important role,explores counselors and professional course teachers collaborative education mode construction principle,analyzes of college counselors and specialized teachers in collaborative education work,explores “course education” background of college counselors and professional teachers collaborative education work path,aims to improve ideological education effect to provide some useful reference.
Volume 44,2025 Issue 2
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YANG Wenjing1, SHAO Ping1, ZHAO Xiaohong1, *
2024,43(3):1-3, DOI: 10.7606/j.issn.1004-6704.2024.03.001
Abstract:
The experiment was conducted to study the effects of different fertilization methods on forage yield and quality. Three treatments of chemical fertilizer, organic fertilizer and organic inorganic formula fertilizer were set up in the experiment. Each treatment was converted into chemical fertilizer, organic fertilizer and organic inorganic formula fertilizer according to the equal amount of 324 t/hm2 of equal N, drip irrigation was used in growing period. The results showed that there was no significant difference in plant height (3.08 m) between applying organic fertilizer and inorganic fertilizer (P>0.05), but there was significant difference in plant height (1.52 kg) between applying organic fertilizer and inorganic fertilizer (P<0.05), the fresh grass yield (84.53 t/hm2) and hay yield (32.01 t/hm2) were the highest, which were significantly higher than that of applying chemical fertilizer and organic fertilizer (P<0.05), and the contents of DM (37.87%) and Starch (38.47%) were the highest, there was no significant difference between applying chemical fertilizer (P>0.05) and applying organic fertilizer (P<0.05). The content of NDF (33.90%) and ADF (20.90%) in forage grass with organic and inorganic fertilizer was the lowest, which was significantly different from that with chemical fertilizer and organic fertilizer (P<0.05). In conclusion, the application of organic and inorganic fertilizer can improve the yield and quality of forage maize in arid and semi arid area.
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SUN Jiachuan，MAN Qixian, ZHAO Bo, GUAN Qisai
2024,43(3):4-8, DOI: 10.7606/j.issn.1004-6704.2024.03.002
Abstract:
Intestinal obstruction caused by foreign objects in small animals is one of the common intestinal diseases in dogs. It is easily confused with hemorrhagic gastroenteritis in clinical practice. This experiment, based on the medical history of a patient dog, combined with blood routine examination, CRP examination, endoscopy, and differential diagnosis with hemorrhagic gastroenteritis, determined that it was a foreign body obstruction in the dog' intestines. The patient dog was attempted to use exploratory laparotomy for treatment. After the surgery, the main treatment measures were anti inflammatory, supplementing nutrition and body fluids, and repairing the gastrointestinal mucosa, achieving significant therapeutic effects. The research results can provide a reference diagnosis and treatment plan for the differential diagnosis and treatment of intestinal foreign body obstruction and hemorrhagic gastroenteritis in pet dogs.
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LIU Hanli, Wan maji☆, MA Denglu, ZHANG Tanying, ZHANG Yuzhen, GONG Yuxia, LIN Chengyou*, YANG Xiulan, XU Cairang
2024,43(3):9-12, DOI: 10.7606/j.issn.1004-6704.2024.03.003
Abstract:
In this study, two groups of 60 neonatal Euler ewe lambs with similar initial body conditions were subjected to different rearing methods. And the primary phenotypic traits, including 18-month body weight and body dimensions were analyzed and compared. The results indicate that the experimental group exhibited continuous growth from birth to 18 months of age. Compared to the control group, at weaning, 6 months, 12 months, and 18 months of age, the experimental group displayed significant increases in body weight, with the highly statistically significant differences (P<0.01) of 5.15 kg, 5.58 kg, 6.31 kg, and 6.86 kg, respectively. The average body height and length increased by 15 cm, 2.24 cm, 2.16 cm, 2.37 cm and 2.68 cm, 3.17 cm, 3.41 cm, 4.16 cm, respectively, both with the highly significant differences (P<0.01). The average chest circumference increased by 1.63 cm, 2.72 cm, 3.78 cm, and 4.43 cm, except at weaning where the difference was significant (P<0.05), and highly significant(P<0.01) at 6 months, 12 months, and 18 months of age. Chest depth and chest width indicators also showed significant increase, with differences (P<0.05) of 1.12 cm, 1.27 cm, 1.35 cm, 1.29 cm, and 1.84 cm, 1.60 cm, 1.10 cm, 1.89 cm, respectively. Additionally, daily weight gain, weaning survival rate, and one year survival rate were significantly higher in the experimental group compared to the control group, with highly statistically differences (P<0.01). The production performance of the experimental group met the standards of the " Euler Sheep" DB62/T490 breed for special class and first class sheep, with high breeding value and significant breeding effects, while the control group only reached the third class sheep of that. And such difference suggesting that the "grazing & timely supplementary feeding" rearing approach is a more rational method for the production of Tibetan breeding sheep in high altitude pastoral areas.
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LIU Xiaocun1, YANG Yajing2, ZHOU Cixi3, LIU Xueji1, CHENG Lei1, ZHAO Hongyuan4, LI Aiyun1, 5, *
2024,43(3):13-17, DOI: 10.7606/j.issn.1004-6704.2024.03.004
Abstract:
In order to evaluate the immune effects of different porcine circovirus type 2（PCV2） vaccines on pigs during growth and finishing stage, a total of 360 piglets weaned and 23 days of age were randomly divided into groups A, B and C with 120 pigs in each group. Group A was immunized with domestic PCV 2a whole virus inactivated vaccine (WH strain) with SEPPIC adjuvant, group B was immunized with imported water adjuvant subunit vaccine (PCV 2a Cap protein), and group C was not treated with any treatment. The results showed that compared with the domestic PCV2 vaccine, the imported vaccine showed strong advantages in terms of growth performance, antibody levels and immune protection period, etc., with significant economic benefits.
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TANG Tianyuan1, CHANG Rong1, WANG Gang2, LIU Bin1, XU Hong1, ZHAO Hai1, DANG Xinhan1, GOU Xiangzhen3, *
2024,43(3):32-34, DOI: 10.7606/j.issn.1004-6704.2024.03.008
Abstract:
Dairy industry is one of the characteristic advantages of the farming and animal husbandry economy of Zhangye City, and also one of the iconic industries of the farming and animal husbandry economy, moreover, it is one of the pillar industries of modern animal husbandry in Zhangye City. After ten years of rapid development, the development level of dairy industry in Zhangye has been greatly improved. However, there are still problems such as short of financial found, less level of management level and insufficient raw milk processing capacity. This paper an overview of the current development status of the dairy industry, summarizes the problems and illustrates the future development ideas and measures to provide ideas for building a full industry chain and promoting the healthy development of dairy industry in Zhangye.
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2024,43(3):40-41, DOI: 10.7606/j.issn.1004-6704.2024.03.011
Abstract:
In order to thoroughly implement General Secretary Xi Jinping’s “four strictest” requirements for food and drug safety and comprehensively improve the level of green and healthy livestock and poultry breeding, Fugu County has adopted the National Action Plan for Reducing the Use of Veterinary Antimicrobials (2021-2025) as an opportunity, we cooperated with the livestock and poultry antibiotic-free breeding technology team of Northwest A&F University to sign a cooperation agreement on the project "Fugu County Livestock and Poultry of Reduced use of antimicrobial drugs Technology Demonstration and Promotion" to comprehensively carry out antibiotic reduction demonstrations in Fugu County. The promotion has received strong support from the Fugu County Party Committee and County Government and the Yulin City Science and Technology Bureau. The use of antibacterial drugs was curbed from three aspects: banning antibiotics on the feed side, reducing antibiotics on the breeding side, and eliminating antibiotics on the feces side. The technology has achieved certain experience and results after 2 years of demonstration and promotion.
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2024,43(3):49-50, DOI: 10.7606/j.issn.1004-6704.2024.03.014
Abstract:
Inner Mongolia Autonomous Region is an important ecological security barrier in northern China. Continue to strengthen the transformation and upgrading of ecological agriculture and animal husbandry, and vigorously promoting the construction of key ecological projects such as the "Three Norths" is an important issue facing the animal husbandry industry in our region. This paper mainly expounds the development status and existing problems of ecological agriculture and animal husbandry in Inner Mongolia, and puts forward relevant countermeasures and suggestions.
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2024,43(3):18-21, DOI: 10.7606/j.issn.1004-6704.2024.03.005
Abstract:
In the study, we investigated the effects of meat quality traits, pH change of pork after slaughter, sampling time and storage time on the water loss rate and drip loss of pork. The results showed that the pH of pork at 45min was 6.01, the meat color and marbling scores were 3.57 and 3.63, respectively, and the water loss rate and drip loss at 24 h were 14.77% and 1.33%, respectively. At 0 ~ 4℃, muscle pH showed a general decreasing trend with the extension of storage time, and significantly decreased at 5 h after slaughter, extremely significantly decreased at 7 h after slaughter, and then stabilized, and increased to 5.85 at 120 h after slaughter, but was still significantly lower than 45 min. Compared with 6 h and 24 h, the muscle moisture content at 2 h after slaughter was decreased by 32.59% (P<0.05) and 38.23% (P<0.05), respectively. Compared with 24 h, the muscle water moisture content at 9 h after slaughter was decreased by 32.33% (P<0.05). The 24 h drip loss measured at 0 ~ 4℃ 2 h after slaughter gradually decreased with the extension of refrigeration time, and the decrease was extremely significant between 24 h and 72 h, and the decrease was small between 72 h and 168 h, with no significant difference. The 24 h drip loss measured by sampling after the carcass was refrigerated at 0 ~ 4℃ for 24 h after acid discharge gradually decreased with the extension of refrigeration time. Drip loss at 48 h, 72 h, 96 h, 120 h and 144 h decreased by 52.65% (P<0.01), 70.09% (P<0.01), 77.57 (P<0.01), 82.87% (P<0.01) and 69.47% (P<0.01) compared with that at 24 h, respectively. The drip loss at 96 h and 120 h was 52.63% (P<0.05) and 63.82% (P<0.01) lower than that at 48 h, respectively. The 24 h drip loss measured by different sampling time is different, and the 24 h drip loss measured by sampling after acid discharge is higher.
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2024,43(3):29-31, DOI: 10.7606/j.issn.1004-6704.2024.03.007
Abstract:
In order to further study the crossbreeding effect of F1 Lambs from different mutton breeds introduced from abroad as the sire crossing with Hu sheep on fattening performance, the experiment was conducted using hybrid lambs from excellent mutton breeds including Dorper sheep, Poll Dorset sheep and Suffolk sheep as the sire (male sheep), and excellent local breeds such as Hu sheep as the dam (she sheep) in barn feeding conditions. The growth performances of the hybrid F1 lambs, including birth weight, body weight at different ages and average daily gain were measured. The results showed that the average body weight at 6-month age in experimental group A (Doper×Hu sheep), group B (Poll Dorset×Hu sheep), and group C (Suffolk×Hu sheep) were 44.76±3.62 kg, 43.65±4.18 kg, and 43.28±3.34 kg, respectively, which were significantly higher than the average body weight in control group D (Hu sheep, 36.32±3.86 kg) (P<0.01). Compared with the control (group D), the profit of lambs in groups A, B, and C were 80.02 RMB yuan, 69.74 RMB yuan, and 42.74 RMB yuan, respectively, which were more than that in the control group (P<0.01). The growth performance and profit of the experimental group A were better than those of groups B and C (P<0.05).
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HE Lianghong1，WEI Li2，ZHANG Hu2
2024,43(3):35-36, DOI: 10.7606/j.issn.1004-6704.2024.03.009
Abstract:
In recent years, based on resource endowment, Pengyang County has strengthened innovation drive, increased policy support, improved industrial system, and vigorously promoted the high quality development of beef cattle industry. Beef cattle industry has become a pillar industry for farmers to get rich and increase income in the county. This paper makes an in depth analysis of the development status and advantages of beef cattle industry in Pengyang County, so as to find out the problems restricting the development of beef cattle industry in Pengyang County, and puts forward practical and sustainable development suggestions for the existing problems.
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WANG Yuting, LI Qinwu, TIAN Xingze, TANG Defu
2024,43(3):42-45, DOI: 10.7606/j.issn.1004-6704.2024.03.012
Abstract:
Attapulgite (APT), also known as palygorskite or palygorskite, is a kind of natural layered chain crystalline hydrated magnesium aluminum silicate mineral with excellent physical and chemical properties, which can be used as a green feed additive in animal husbandry production. This paper reviews the structure and physicochemical properties of attapulgite and its application in feed production and animal disease prevention and control.
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2024,43(3):37-39, DOI: 10.7606/j.issn.1004-6704.2024.03.010
Abstract:
Linze County has taken the implementation of policy based agricultural insurance as a powerful lever to promote rural revitalization. While developing and strengthening modern agriculture, it has effectively reduced the risk losses caused by natural disasters to agricultural production, and effectively built a risk breakwater for the development of the agricultural industry. But there are also some factors that constrain development. This article summarizes the situation and existing problems of implementing policy based agricultural insurance to assist rural revitalization and development in Linze County, and proposes targeted development strategies.
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2024,43(3):46-48, DOI: 10.7606/j.issn.1004-6704.2024.03.013
Abstract:
As a cheap and nutritious feed resource, wine lees feed has important application and research value in sheep breeding. This article summarizes the recent progress in the application of wine lees feed in sheep breeding, discussing the nutritional characteristics of wine lees feed, processing technology, and its application prospects in sheep breeding. It also points out the issues that need to be further explored and the research direction in the future
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ZUO Yuzhen1, LIU Ruigang2, WEI Xuhui1, WANG Xu1
2024,43(3):22-28, DOI: 10.7606/j.issn.1004-6704.2024.03.006
Abstract:
The effects of different silage fermentation promoter and silage time on quality of whole plant corn in this study.Using local whole plant corn as raw material,Cutting at the same growth period,Taking silage time and silage fermentation promoter as experimental factors,Field evaluation, nutrient analysis and silage quality test were carried out.The results:The sensory evaluation of the whole plant corn feed treated with different ensilage fermentation promoters was higher than that of the control group;The contents of DM, CP , ADF, NDF , ADL , ST , EE , WSG , TDN and CA in the whole plant after silage were significantly affected by fermentation promoters（P<0.05）;PH , lactic acid content, acetic acid content and ammonia nitrogen content in fermentation quality were significantly affected（P<0.05）;The silage time was better in Week 7 than in Week 9.Conclusion:The fermentation time of whole silage corn was 7th week (49 days).The quality of whole plant silage corn was improved by using xianmu 1168 and new era silage, which was better than using no silage and other silage fermentation accelerators.
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2024,43(5):43-46, DOI: 10.7606/j.issn.1004-6704.2024.05.009
Abstract:
To ascertain the quantity and conservation status of Qinling lenok (Brachymystax lenok tsinlingensis) germplasm resources,clarify conservation strategies,and provide a scientific basis for the long-term protection of Qinling lenok,we conducted an investigation into the current status of Qinling lenok resources and analyzed related conservation measures and their effectiveness in the Tianshui National Nature Reserve for Rare Aquatic Wildlife in Gansu Province.The results indicate that between 2012 and 2023,the Qinling lenok population initially declined and then increased.The primary cause of the resource decline was the flood disaster in 2018.Furthermore,the establishment of the nature reserve and the effective implementation of conservation measures have led to an increase in the Qinling lenok population,demonstrating the effectiveness of the reserve??sprotection efforts.
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LIU Xiaodong1, LI Nana1, LI Xin1, MIAO Xiaorong1, LI Yixuan2, LI Haijiang3
2024,43(5):8-16, DOI: 10.7606/j.issn.1004-6704.2024.05.002
Abstract:
In order to select the alfalfa varieties suitable for planting and promotion in the sandy grassy beach area of Yulin,this experiment comprehensively evaluated the production performance and nutritional quality of 10 alfalfa varieties. The results showed that the fresh grass yield and hay yield of Zhongmu No.2 and WL343 varieties were higher in each crop.The plant height of Zhongmu No.2,WL343 and Juneng 551 varieties were higher in each crop.Compared with other alfalfa varieties Jin Queen,the stem thickness is thicker.The ratio of stem and leaf after Zhongmu No.2,Juneng 551 and Jin Queen were smaller in each crop.The three varieties Zhongmu No.2,WL343 and Jin Queen showed faster growth rate in each crop.The crude protein content of Zhong mu No.2 and Gannong No.3 in each crop was significantly higher than that of other alfalfa varieties(P<0.05).The crude fat content of Zhongmu No.2 and Jin Queen was significantly higher than that of other alfalfa varieties on the whole(P<0.05).The crude ash content,neutral detergent fiber content and acid detergent fiber content of Zhongmu 2,WL343,Jin Queen and Gannong 3 were significantly lower than those of other alfalfa varieties on the whole (P<0.05).Compared with other alfalfa varieties,Zhongmu No.2,WL343 and Jin Queen had higher feeding value.It was also found that the production performance and nutritional quality of each alfalfa variety decreased significantly with the increase of cutting times (P<0.05).The results of comprehensive evaluation showed that the production performance and nutritional quality of Zhongmu No.2 alfalfa were the best,followed by WL343 and Jin Queen,indicating that these three alfalfa varieties could be widely cultivated in Yulin area.
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DOU Xiaoli1, LIANG Wanpeng2*, HAN Qinghui3, ZHANG Jinxia2
2024,43(5):17-23, DOI: 10.7606/j.issn.1004-6704.2024.05.003
Abstract:
In order to select the forage of high yield,good quality and suitable for popularization in dry farming area,Oat(Avena sativa L.),the productivity and nutrient composition of 3 introduced varieties of Avena sativa L.were determined.The relationship between 12 agronomic traits of 3 varieties was evaluated by factor analysis,and variance analysis was performed for the common nutrient components of different varieties.The results showed that the comprehensive score of Fuyan No.1 was 5.626,ranking first.The “ash” of the three varieties was significantly different(P<0.05).The results of multiple comparisons showed that there were significant differences between “non fiber freshwater compounds”,“total digestible nutrients” and “monosaccharides” between Tianyan 1 and Fuyan 1(P<0.05),but no significant differences among the other three indexes (P>0.05).
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LI Nengqin, YANG Caihong, WANG Hongyan*
2024,43(5):51-54, DOI: 10.7606/j.issn.1004-6704.2024.05.011
Abstract:
Wuwei City is an important agricultural town in Hexi.With the continuous development of agricultural and rural economy,the contradiction between ecological environment and economic development has become increasingly prominent,and agricultural non point source pollution has become an important problem affecting the ecological environment.This paper introduces two agricultural non point source pollution,fertilizer pollution and water pollution,and analyzes five reasons for agricultural non point source pollution:The huge changes in the scale of land management,the lack of farmers?? awareness of environmental protection,the lack of farmers?? labor input,the lagging of environmental governance technology,and the lack of supervision were put forward.The countermeasures of strengthening environmental awareness,relying on science and technology,perfecting the mechanism,and strengthening supervision were put forward to provide the basis for improving the rural ecological environment of our city.
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LI Pengxia, ZHAO Yuanfang, YANG Lingping*, LI Hongmei, GAO Ga, MA Denglu, ZHANG Hongxia, SHI Hongmei
2024,43(5):24-28, DOI: 10.7606/j.issn.1004-6704.2024.05.004
Abstract:
To study the optimal combination of artificially cultivated high quality forages for the feeding of An??galiba calves in confinement,40 An??galiba calves of 10 months old with similar weight,height,body length,chest girth,and cannon bone circumference were randomly selected for the experiment.The calves in experimental groups Ⅰ,Ⅱ,and Ⅲ were fed using a tethered feeding method,while group Ⅳ was grazed with supplementary feeding.Different combinations of wrapped silage forages were fed for 90 days.group Ⅰ(70% oat grass,20% red bean grass,10% sorghum hybrid sudangrass) gained 44.08 kg;group Ⅱ(60% oat grass,40% red bean grass) gained 26.59 kg;group Ⅲ(60% oat grass,40% sorghum hybrid sudangrass) gained 24.06 kg;group Ⅳ gained -13.48 kg.The economic benefits were 1 667.5 yuan for group Ⅰ,810.5 yuan for group Ⅱ,706.5 yuan for group Ⅲ,and -813.5 yuan for group Ⅳ.The results showed that the best quality coarse fodder combination was more beneficial to the growth and development of Angus cross cattle in cold season compared with grazing and supplementary feeding group.
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XU Yuan1, XU Jiping2, LIU Xiaoying2, JIANG Yu1*
2024,43(5):1-7, DOI: 10.7606/j.issn.1004-6704.2024.05.001
Abstract:
This study,based on whole genome sequencing data,used 406 horses from 76 horse breeds worldwide as the research subjects.Three sophisticated methodologies principal component analysis,phylogenetic tree,and ancestral component analysis,were used to comprehensively assess the genetic structure of modern horses at the genetic level.Additionally,genetic diversity of modern horse populations was evaluated using nucleotide diversity as an indicator,and the Fst and XP EHH selection methods were applied to detect genomic selection signals between different horse populations.Five candidate genes(HBB,EPAS1,TMEM247,RHOQ and ATP6V1E2) significantly related to the high altitude adaptation of Tibetan horses,three candidate genes (HMGA2,TBX3 and TBX5) significantly related to body size traits of Chinese Southwest horses,and genes (IGFBP3,IGFBP1,THSD7A,ADCY1) significantly related to the equestrian performances,behavior,and movements of highly selected horses in Europe and America were selected.This study provides a scientific basis for further protecting the germplasm resources of local horse breeds and reveals the selection direction of artificially cultivated horse breeds.
