Abstract:This experiment aims to study the effects of traditional Chinese medicine feed additives on the immune function, amino acids and immune function of Gannan Tibetan sheep. We randomly divided 60 Tibetan sheep into 6 groups, which were 3 control groups and 3 experimental groups, with 10 Tibetan sheep in each group. The basal diet of the experimental group was supplemented with 1% of locally sourced sevenflavor traditional Chinese medicine feed additives. The pretest period is 10 days and the formal test period is 90 days. The results showed that the immune function, amino acids and fatty acids of Gannan Tibetan sheep in the control group were significantly improved compared with the experimental group (P< 0.05). Tests have shown that adding traditional Chinese medicine feed to the diet of Gannan Tibetan sheep can significantly improve the immune function, amino acids and fatty acids of Gannan Tibetan sheep. This shows that adding different doses of Chinese medicinal materials is beneficial to the healthy development of Tibetan sheep.

Abstract:In order to study and promote the advantages of excellent breeds and better serve the promotion and application of seed selection, breeding and mutton production performance, this study selected three breeds of valleytype Tibetan sheep, Qinghai semifine wool sheep and Qinghai Tibetan sheep, and Jie sheep of different ages. We carry out muscle nutrient composition analysis and amino acid content determination. The results show that the main nutritional indicators and testing data of valleytype Tibetan sheep are crude protein content of 21.00%, crude fat 3.15%, cholesterol 0.3650 (mg/g), volatile base nitrogen 0.1190 (mg/g), and total mineral content 6 785 (mg/g), energy is 4.74 (kJ/g). Its total amino acid content is 16.08% higher than Qinghai semifine wool sheep and 5.06% higher than Qinghai Tibetan sheep. The conclusion of this study is that the content of volatile basic acids can reflect the freshness of mutton, and anything within 0.15mg/g is considered fresh. This shows that the mutton tested in this analysis has high energy, high protein, low fat, low cholesterol and rich amino acid content, and is a pollutionfree food.

Abstract:Contagious ovine pleuropneumonia, also known as mycoplasmal pneumonia, is a highly contagious infectious disease caused by mycoplasma. Its clinical features are high fever, cough, and serous and fibrinous inflammation of the chest and pleura. The disease mainly affects lambs aged 1 to 3 months. It often takes acute and chronic forms and has a high mortality rate. It is a common respiratory disease in sheep breeding. Antibiotics are mostly used for clinical treatment, but drug resistance often occurs, resulting in poor efficacy. In recent years, we have used early application of Chinese herbal medicine supplemented with more sensitive antibiotics for treatment, and achieved good therapeutic effects. This article observes the efficacy of four commonly used groups of traditional Chinese medicine prescriptions and selects a group of Chinese medicine prescriptions with the best efficacy, in order to provide solutions for clinical treatment.

Abstract:Praziquantel plays an important role in the prevention and control of hydatid disease in dogs. Effective prevention and control of hydatid disease can basically be achieved by regularly administering an appropriate amount of praziquantel to dogs, and promptly disposing of the feces during the medication period. Nowadays, there are many kinds of dogs bred in pastoral areas, including local indigenous dogs, Tibetan mastiffs, pet dogs, huskies, etc. (not pure breeds, but belong to the FN generation, but they are similar in appearance). Whether the breed and age of dogs affect the anthelmintic effect of arsequinone. Studying these factors clearly will help to implement refined medication for dogs in the prevention and control of hydatid disease, and comprehensively improve the efficiency of medication and deworming. This lays a solid foundation for effective prevention and control of hydatid disease.

Abstract:This experiment explores the production performance analysis and analysis of male and female lambs produced under different crossbreeding modes such as Texel sheep, Kazakh sheep, Teha cross F₁, Teha cross F₂, nearclass F₂, backcross F₂, and cross F₂. Blood physiological and biochemical analysis. The research results show that there are differences in blood biochemical indicators among different crossgeneration sheep populations. There are also differences in local adaptability, disease resistance and autoimmunity between introduced varieties and hybrid improved populations. There are also differences in the production performance of lambs produced by different crossbreeding methods. The F₁ generation has the most obvious hybrid vigor and is the most economical hybrid method. This provides a theoretical basis for crossbreeding of Kazakh sheep for meat.

Abstract:Hu sheep breeding has formed an industrial chain in China, which is of great significance to effectively link poverty alleviation to rural revitalization. However, in the production practice, it was found that the Hu sheep produce more lambs, have low survival rate, and grow slowly, and have a high incidence rate because of ewe mastitis. In recent years, forced supplementary feeding technology has been adopted to exercise the digestive system of lambs in advance, and good results have been achieved. This study carried out a comparison of two forced supplementary feeding methods of concentrate and concentrate + forage in a largescale Hu sheep breeding farm, and made a comparison from the growth rate, growth and development of digestive tract, slaughter performance and histomorphology of gastrointestinal tract of lambs. Results showed that the effect of early forced supplementary feeding of concentrate + forage was significantly better than that of concentrate alone. The research results are of great significance for the largescale Hu sheep breeding farm to improve the survival rate of lambs, reduce the incidence rate of ewe mastitis, and promote the quality and efficiency of Hu sheep breeding.

Abstract:Taurine is a semiessential amino acid in animals. A large number of studies have found that it can play an important role in improving animal reproductive performance. Therefore, this article reviews the basic properties of taurine and the research progress on its impact on animal reproductive performance, which provides a reference for the wide application of taurine in animal production.

Abstract:Natural pasture plays an important role in supporting and promoting the development of animal husbandry. However, due to the lack of effective institutional management and technological innovation, people's unregulated development and utilization have led to increasing degradation of natural grasslands. This article takes Tianzhu Tibetan Autonomous County, located in the Qilian Mountain Plateau area, as an example. We investigated and analyzed the current situation of natural grassland degradation, proposed a series of strategies that can promote the sustainable development of natural grassland, and discussed and analyzed the impact on my country's rare horse breeds under the background of natural grassland degradation in Tianzhu County - The impact of breed resource protection on Tianzhu Chakou Stage Horse. This will play an important role in protecting and developing the Chakou Yima germplasm resources in Tianzhu County in the future, developing modern animal husbandry in plateau areas, and inheriting and developing the characteristic horse industry culture in Tibetan areas. This article aims to explore an effective management plan for the protection and coordinated development of Tianzhu County’s natural grassland and Chakou Yima breed resources, and to ensure the healthy development of the ecological environment and social economy.

Abstract:In order to realize intelligent animal health supervision and effectively ensure the quality and safety of animal products, this study explores the multilink information connectionsharing mechanism, hardware and software assurance, and intelligent practice of poultry quarantine ring traceability on the basis of building a poultry quarantine ring traceability information system. Path and operation system construction experience. The results show that after the operation of the poultry snap ring traceability smart veterinary system, it not only plugged the loopholes in quarantine supervision, but also created a good "businessbusiness" relationship, reduced the operating costs of poultry slaughtering companies, and saved poultry product sellers time. This improves the competitiveness of enterprises and their products, effectively guarantees the quality of meat, and ensures that consumers can eat "safe meat." Finally, suggestions were put forward on the improvement of official veterinary capabilities, system optimization, multisector coordination and legislative construction. This is expected to provide useful and scalable solutions for animal health supervision.

Abstract:Pingliang City is rich in corn straw resources, which creates unique conditions for the development of the beef cattle industry. In recent years, the country has vigorously promoted the use of corn straw as feed through graintofeed conversion, which has effectively promoted the transformation of beef cattle feeding methods, reduced feeding costs, improved breeding efficiency, and solved the problem of seasonal shortage of forage grass. Based on this, this article summarizes the current situation of corn straw utilization and cattle industry development in Pingliang City, and makes a corresponding analysis of the application of corn straw in the development of cattle industry and its social benefits and advantages.

Abstract:Pingliang has a wide plateau, fertile soil, moderate rainfall, pleasant climate and abundant forage resources. It is a national highquality beef cattle production area designated by the Ministry of Agriculture. Cattle raising is a traditional industry for farmers in Pingliang. Under its unique natural environment, climatic conditions, and specific feeding methods, the beef cattle raised have the advantages of high meat yield, tender meat, strong intramuscular fat deposition ability, and excellent marbled meat quality. This is the germplasm resource for producing highquality and highgrade snowflake meat in China. It is also the only beef with a unique aromatic flavor and is known as the "Moutai" of the cattle industry. Ensuring the quality and safety of meat and allowing people to eat with confidence is related to the health and life safety of the people and is an important livelihood issue. As a grassroots livestock product quality and safety supervisor, the author combines many years of work experience to analyze the current situation of veterinary drug residue testing in Pingliang beef and beef products. This article puts forward corresponding countermeasures and suggestions for existing problems, and hopes to discuss them with colleagues.

Abstract:The prevention and control of echinococcosis among livestock in Zhangye City mainly takes measures such as deworming dogs, strengthening quarantine supervision in slaughterhouses, ensuring the harmless treatment of infected organs, and vaccinating newborn lambs and newly restocked sheep every year. The detection rate of echinococcosis cysts in designated cattle and sheep slaughterhouses has been declining year by year. However, when conducting random inspections on dogs’ deworming status, it was found that some dog owners still do not pay enough attention to the prevention and control of echinococcosis. Township professional and technical personnel gave false guidance on deworming work. Problems such as the irregular operation of dog deworming by dog owners. In order to solve the current problems, this article recommends measures to strengthen the publicity of hydatid disease prevention and control knowledge, strengthen township technical forces, strengthen onsite guidance and standardize dog deworming operations, so as to better implement hydatid disease prevention and control work.

Abstract:In order to fully understand the development status of the livestock and poultry slaughtering industry, the author conducted a survey on livestock and poultry slaughtering enterprises in Shaanxi Province and analyzed the current status of the livestock and poultry slaughtering industry and supervision. This article points out problems such as insufficient supervision of livestock and poultry slaughtering, uneven overall development of pig slaughtering, relatively backward development of cattle and sheep slaughtering, and difficulty in implementing standardized slaughtering of poultry. This article puts forward strategies such as continuously strengthening the supervision of livestock and poultry slaughtering, promoting the transformation and upgrading of pig slaughtering enterprises, overall planning of the cattle and sheep slaughtering industry, and standardizing poultry slaughtering management as soon as possible, in order to provide reference for the highquality development of livestock and poultry slaughtering in Shaanxi Province.

Abstract:The "Silk Road" was the important land and sea channel for communication, trade and cultural exchanges between China and foreign countries in ancient times, and this is due to the domestication of silkworms by ancient Chinese people. Silkworm is an important economic insect, and the silk has high historical and cultural value and commercial value, which is of great significance to the study of silkworm. How to improve the quality and yield of silkworms and gain a leading position in the international silkworm research has become a key issue for China. In order to analyze the international research trend of silkworm in the 21st century, this paper is based on Web of Science core database and literature metrology strategy to carry out literature visualization research. In this paper, we search subject terms in WOS core database, and use VOSviewer, Excel2016 and other software to carry out visual analysis. It was found that with the development of modern biotechnology, the development of silkworm research in China also showed a good trend. And China should pay more attention to silkworm research, improve the breeding level, make comprehensive utilization of silkworm industry resources, and become the leader in silkworm research.

Abstract:This article aims to gain a detailed understanding of the city’s livestock and veterinary talent team construction work. We conducted a survey on the city’s livestock and veterinary talents through indepth onsite communication. On the basis of understanding the current situation and existing problems in the construction of animal husbandry and veterinary talent teams in Hezuo City, we provide practical opinions and suggestions based on the actual development of local animal husbandry and talents.

Abstract:Telomeres are specialized structures found at the ends of eukaryotic chromosomes that shorten with cell division. Telomerase lengthens telomeres but has low or no activity in normal human cells. Most tumor cells extend telomeres to reach the possibility of unlimited cell proliferation by activating telomerase activity. Telomerase activity is strongly associated with tumorigenesis. This review takes common clinical malignant tumors in recent years as a starting point to review their relationship with telomerase activity and the latest research on telomerase inhibitors.

Abstract:Intelligent breeding industry refers to the use of electronic information technology and advanced management concepts, intelligent management and optimization of the whole process of breeding production, in order to improve the efficiency of breeding and product quality. There are several electronic information technologies used in the intelligent breeding industry. (1) Internet of Things (IoT) technology: Through the installation of sensors and monitoring equipment in the farm, realtime collection of environmental data of the farm, realtime monitoring of animal growth conditions, behavioral habits, etc., to provide accurate data support for the farm. (2) Big data analysis technology: Through data analysis, we can find the growth law of farmed animals and the key points of disease prevention and control, so as to improve the efficiency of breeding. (3) Artificial intelligence (AI) technology: intelligent analysis of breeding data to achieve automated farm management; Disease diagnosis through artificial intelligence technology, automatically identify sick animals and take corresponding measures to reduce the risk of disease transmission. (4) Mobile Internet technology: realize realtime transmission and sharing of farm information, facilitate communication between farmers, veterinarians, experts and other parties, and provide intelligent services for farmers(5) Cloud computing technology: the data of the farm is stored in the cloud to achieve centralized data management and efficient use; Provides powerful computing power for farms to support complex data analysis and simulation. (6) 3S technology (remote sensing technology, geographic information system, global positioning system) : to conduct a comprehensive survey of the topography, landform, soil, etc., to provide a scientific basis for the location, planning and management of farms. In short, the application of electronic information technology in the intelligent breeding industry helps to improve the efficiency of breeding production, reduce production costs, and ensure the quality and safety of breeding products.

Abstract:The development of animal husbandry and raising the productivity of breeding can promote the increase of people's income and improve people's living standard, it plays an important role in consolidating the achievements of the poverty alleviation sector and effectively linking them with the revitalization of rural areas. Strengthening the promotion of animal husbandry and veterinary technology can not only raise the level of farming technology of rural people, but also contribute to the modernization of agricultural and rural areas, it is of great significance to the overall promotion of rural revitalization.

Abstract:Forage industry is the basis for the development of animal husbandry, and highquality and sufficient forage is the premise to ensure the highquality development of animal husbandry. In recent years, Liangzhou District has adhered to the principle of "stabilizing grain, optimizing economy and expanding feed", accelerated the adjustment and optimization of agricultural structure, relied on the central "grassland award and subsidy" and "grain transformation and feeding" projects, adopted the model of "leading enterprises + cooperatives + farmers" to promote the construction of highquality forage highyield demonstration base, and effectively promoted the healthy and sustainable development of forage industry.As a professional and technical personnel, this paper investigates the development status of forage industry in Liangzhou district, and puts forward countermeasures and suggestions for reference in the industry.

Abstract:Shaanxi Province is a large livestock farming province, and livestock farming plays an important role in promoting poverty alleviation and economic growth for farmers in the province. In recent years, the scale of livestock breeding has further expanded, but water shortage has gradually become a bottleneck restricting the sustainable development of the livestock industry. The popularization and implementation of livestock water conservation technology and equipment is an important initiative to solve this problem. The popularization and implementation of livestock water conservation technology and equipment can also further explore the water conservation potential of livestock farming, and then promote the modernization of the livestock industry, assistant force rural strategy implementation. This paper mainly introduces the status quo of the development of animal husbandry in Shaanxi Province, the problems of animal husbandry water conservation and related animal husbandry water conservation technology, and puts forward several suggestions for the promotion of animal husbandry water conservation. I hope to let more people understand animal husbandry water conservation, pay attention to animal husbandry water conservation, practicing animal husbandry water conservation.

Abstract:Internet of Things technology combined with animal husbandry is the future development trend of modern largescale farms. Through the application of IOT technology can reduce feeding costs, improve economic benefits, improve the breeding environment, improve production efficiency, reduce the elimination rate, improve survival rate, lay the foundation of the industry, and lead the development of the whole industry chain. This paper focuses on the poultry, monogastric animals, rumen animals feeding management, analyzes the various applications of Internet of Things technology in the field of livestock and poultry farming, through the automated monitoring and thus realize the farms to bring increased income and provide more healthy, more nutritious products, as well as in the process of Internet of Things technology promotion of the status quo and existing problems and put forward the corresponding recommendations. The aim is to provide a theoretical basis to support the development of IOT technology in the livestock and poultry industry to achieve the purpose of cost reduction, efficiency and transformation and upgrading.

Abstract:This study used Cryptosporidium spp. 18S rRNA as the target gene, and found that 18 of the 101 fresh fecal samples collected were positive through nested PCR detection. The Cryptosporidium infection rates in sheep farms in different areas were 36% (18/50) in Liji Town, 0% (0/30) in Xin'an Town, and 0% (0/21) in Duigogang Town. No Cryptosporidium was detected. However, through the analysis of 4 sheep farms, it was found that 2 sheep farms (50%) were positive for Cryptosporidium infection, and the infection rates of different sheep farms were significantly different. Therefore, the infection rate of Cryptosporidium was simply evaluated by region, is debatable. The infection rate of Cryptosporidium parvum in goats was 33.3%, and the infection rate of Cryptosporidium parvum in Hu sheep was 2%. The infection rate of Cryptosporidium parvum in fattening sheep aged 2 to 6 months was 36%, and that of growing sheep aged 6 to 10 months (0%). The Cryptosporidium 18S rRNA gene fragment sequence analysis was performed on the samples that tested positive. We found that all 18 samples were Cryptosporidium xiaoi and there was no Cryptosporidium ubiquitum. In 1 goat farm and 1 Yanghu sheep farm that tested positive for Cryptosporidium infection, there was Cryptosporidium parvum infection, but there was no Cryptosporidium ubiquiti, and no Cryptosporidium parvum and Cryptosporidium ubiquita were found. of mixed infections. Current data suggest that Cryptosporidium shooni has a higher infection rate in goats aged 2 to 6 months (33.3%) and Hu sheep (2%). These 18 samples came from two largescale sheep farms, belonging to two sheep farms in Liji Town.

Abstract:This article aims to find out the current status of sustainable development of ecological animal husbandry in Xinghai County, deeply analyze the existing problems in animal husbandry production, and put forward rational suggestions and countermeasures. This has prompted the county's animal husbandry industry to move towards a new economic organization with largescale operations, specialized production and industrial development. This achieves "highyield, highquality, and efficient" ecological animal husbandry. From June to September 2021, the author conducted a detailed investigation on the development of ecological animal husbandry in Xinghai County. This study used information review and visits to cooperatives. We investigate pasture livestock capacity, grass production, rodent damage, and herd structure. The results show that the key issue in developing ecological animal husbandry is to resolve the contradiction between natural factors and human factors. Correctly handle the profound philosophy of protecting and developing in animal husbandry production, rationally utilize and protect natural grasslands, optimize the industrial structure, adjust work ideas at any time, and keep pace with the times. Only in this way can the ecological animal husbandry system enter a virtuous cycle and develop in a coordinated manner.

Abstract:This experiment selected the northern Shaanxi white cashmere goat and Hu sheep breeds as the research subjects. Without restricting food intake and drinking water, the same feeding and management conditions were used for fattening and the cost of lambs, forage costs and other benefit indicators were calculated. This is a comparative analysis of the economic benefits of northern Shaanxi white cashmere goats and Hu sheep. The results show that the average profit of fattening northern Shaanxi white cashmere goats is approximately 127.26 yuan per animal higher than that of fattening Hu sheep.

Abstract:Brucellosis is an acute or chronic zoonotic infectious disease of various animals caused by bacteria of the genus Brucella. Sunan County is a Category II area for the prevention and control of brucellosis among livestock. In order to analyze the reasons for the rebound of brucellosis among livestock in some parts of the county, the animal husbandry and veterinary departments at the county and township levels carried out a special investigation and epidemiological analysis of the source of brucellosis among livestock. This initially clarifies the main reason for the rebound of brucellosis. This provides practical suggestions for further carrying out the prevention and control of brucellosis among livestock.

Abstract:This study aims to promote the sound and rapid development of animal husbandry in Dengmaying Lake and solve the problems existing in the development process of animal husbandry. We conducted a comprehensive investigation on the development of animal husbandry in Dengmaying Lake Command through onsite visits, investigations and studies, and exchanges with leaders of the command department and cadres of the livestock station.

Abstract:Carrying integrating ideological and political elements in animal husbandry microbiology course is helpful to establish correct ideological and moral system and firm ideal and conviction of animal science major students. The teaching method of PBL is an important teaching method of ideological and political education design in animal husbandry microbiology course. It takes vivid human deeds and historical events as cases, and raises questions to inspire students to understand the ideological and political connotation of the cases, so as to improve students learning knowledge and their own ideological and moral level. Under the background of COVID19 epidemic, how to effectively integrate internal ideological and political elements and contains them in the course teaching should be included in the ideological and political teaching tasks of animal husbandry microbiology course. This paper discusses this problem in depth. Based on the emergence of many advanced person, deeds and related events in the COVID19 epidemic, teachers use heuristics to ask questions and guide students to think and discuss, so as to effectively enhance the participation of students. Combined with the study and explanation of professional knowledge, students can realize the ideological and moral significance of cases, and then internalize it into their own ideals and beliefs. In this way, students can not only explore the true meaning of science, but also cultivate patriotism and professional selfidentity.

Abstract:In recent years, consumer demand for meat products has continued to increase with the improvement of living standards. The national pig inventory and slaughter volume have increased. The shortage of livestock and veterinary professionals is growing. "Pig Production and Management" is a compulsory core course for animal husbandry and veterinary medicine. It has strong theoretical and practical aspects and can provide important technical support for the pig industry. It has been more than four years since African swine fever appeared in China. In the postAfrican fever era, pigraising enterprises are still facing great pressure for epidemic prevention. The pig breeding experimental site required for the relevant practical training content of the "Pig Production and Management" course cannot be built on campus, and the course teaching is in urgent need of reform. Virtual simulation technology brings new ideas and methods to teaching.

Abstract:Since the introduction of African swine fever into our country, the struggle has been fierce between the bureaucratic approach that only considers the reality of the raging epidemic and ignores the need to introduce seed sources, and the blind approach that only considers the need for introduction and ignores the reality of the raging epidemic. The "Animal Epidemic Prevention Law of the People's Republic of China", "Animal Quarantine Management Measures" and "Animal Husbandry Law of the People's Republic of China" have been revised successively and will come into effect on May 1, 2021, December 1, 2022, and March 1, 2023 respectively. Under this background, what should be done to introduce largescale pig farms? Based on the experience of epidemic prevention and control and the lessons learned from the introduction of breeding sources in history, the author has formed a set of methods that take into account the animal epidemic prevention requirements of both supply and demand and ensure the quality of breeding pig introduction during the technology promotion process. It has been revised and improved in accordance with the revision of laws and regulations. The revised and improved largescale pig farm introduction practices require the scientific formulation of the introduction source plan, preparation of isolation conditions in advance, and effective onsite verification by the introduction team. A threepronged approach is in place to ensure the individual quality of breeding pigs, to transport them without damage, and to report and isolate pigs in accordance with the law after landing.

Abstract:This article systematically discusses the application of traditional Chinese medicine in lamb fattening. Through combing and analyzing relevant literature, we summarized the effects and mechanisms of traditional Chinese medicine in increasing lamb weight, promoting muscle growth, and improving immunity. We also explored the synergistic effect of the combined application of traditional Chinese medicine and trace elements such as selenium and zinc on lamb fattening. This not only provides new ideas and methods for improving the efficiency of lamb breeding, but also helps promote the application of traditional Chinese medicine in animal husbandry.

Abstract:Mediumscale cattle farms are numerous, scattered and have low levels of facilities. They are the backbone of the beef cattle breeding industry in Longdong. However, it has received little attention, and there are problems such as nonpoint source pollution from feces and difficult treatment. This article combines the actual production to solve the pollution problem from the application of applicable technologies such as source reduction, process control, and terminal treatment of manure, and realize the harmless resource utilization of manure. This provides technical support for the healthy development of the local cattle industry.

Abstract:The "Pig Production" course is an important professional course offered by the animal husbandry and veterinary major in higher vocational colleges. Through the study of this course, students will be equipped with the basic knowledge and skills of pig raising, and have the ability to independently carry out job work, solve practical problems in pig farms, innovate and start businesses, and continue to learn. In order to solve the problems existing in online teaching courses, our team established an online open course on "Pig Production". This article mainly analyzes and summarizes the construction background, course overview, teaching design, development history and characteristic innovation of the "Pig Production" online open course. This is expected to provide a reference for other course construction and applications.

Abstract:Since the new agricultural science construction was proposed, higher requirements have been put forward for the training of agricultural professionals. "Animal Genetics" is the main basic course for animal husbandry majors. How to effectively excavate and apply the ideological and political resources of the course to achieve the organic integration of knowledge and value goals to adapt to the requirements for cultivating innovative animal husbandry talents in the context of new agricultural sciences. This is the direction that this course group has been exploring and practicing in recent years. This article introduces the important events, figures, actual production cases and the latest scientific research results of the course group in the history of the development of combined genetics, analyzes the integration points of ideological and political resources and genetic knowledge, and deeply explores teaching examples of ideological and political elements in the course. This is expected to provide reference for the ideological and political teaching reform of animal genetics.

Abstract:This study aims to understand the prevalence of porcine reproductive and respiratory syndrome (PRRS) in Jiuquan City. This experiment collected 638 samples from five agricultural counties and cities in Jiuquan City, and used reverse transcriptionpolymerase chain reaction (fluorescence RTPCR) method for nucleic acid detection. We analyze the prevalence in different regions, different growth periods, and different feeding modes. The results showed that a total of 29 PRRS nucleic acid positive samples were detected among 638 samples, and the PRRS positive infection rate was 4.55%. The PRRS positive infection rate in different regions ranges from 0-7.95%. The PRRS positive infection rates in slaughterhouses, largescale farms, and freerange households were 0, 2.96, and 6.82% respectively. The PRRS positive infection rates of breeding boars, fattening pigs, piglets, and sows were 0, 3.1, 5.38, and 6.36% respectively. The results showed that PRRS was sporadic in Jiuquan City. Largescale farms are highly standardized and have advanced feeding and management models with low PRRS positive infection rates. Piglets and sows are more susceptible to this disease. This test will provide technical support for the comprehensive prevention and control of PRRS in our city.

Abstract:Brucellosis is one of the major zoonotic diseases in pastoral areas, which is affected by market and other factors. Frequent exchanges between animals and their products in pastoral and agricultural areas increase the risk of occurrence, prevalence, and spread of animal diseases. In order to further strengthen the prevention and control of brucellosis in pastoral areas, the Sunan County Huangcheng Sheep Breeding Farm and the Semenu Alpine Fine Wool Sheep Breeding Stock Breeding Company were used as demonstration sites to integrate brucellosis detection and purification methods and standardize feeding. Comprehensive prevention and control measures include managing behavior, strictly controlling crossregional movement, and forcibly culling positive sheep. This explores the scientific prevention and control strategies and successful experiences of brucellosis among livestock in our county. This provides a reference and replicable integrated demonstration experience for households, villages, and townships (towns) in our county to implement animal brucellosis purification and epidemic prevention.

Abstract:Porcine Pseudorabies (PRV) is a viral infectious disease that causes nervous system dysfunction. It mainly harms pregnant sows and lactating piglets. Sows show reproductive disorders after infection, while piglets mainly show neurological symptoms and have a high mortality rate. To prevent this disease, we need to scientifically vaccinate susceptible pigs, strengthen comprehensive disinfection of the entire farm, and improve the biosecurity management level of pig farms. At present, there are no specific chemical drugs that can treat porcine pseudorabies. The mortality rate of sick pigs can be reduced through symptomatic medication.

Abstract:Cow abortion is a common issue in dairy cattle farming. If not actively prevented and treated promptly, it can lead to extended breeding cycles and reduced calving rates, thus causing significant economic losses to the livestock industry. This study analyses cases of cow abortion that occurred on a specific cattle farm between October 2022 and September 2023. The statistical results revealed that out of 29 reproductively capable cows, 29 calves were born, but unfortunately, 9 of the newborns died, resulting in an alarming abortion rate of nearly onethird. To identify the underlying causes of these abortions, this research conducted comprehensive investigations and tests on various factors, including environmental conditions, feed quality, and medication practices. The study revealed severe contamination of silage feed with mold and a significant excess of Aflatoxin B1. Considering these findings and the overall examination, the preliminary conclusion points to prolonged consumption of Aflatoxincontaminated feed as the fundamental cause of cow abortions. To mitigate the abortion rate, this study proposes a series of targeted preventive and control measures. These measures include monitoring animal health, regulating feed management, and conducting regular tests for mold toxins. The objective is to minimize the incidence of cow abortions and provide valuable assistance to fellow professionals and cattle breeders.

Abstract:Lymphatic extravasation is a relatively rare surgical disease in clinical practice. The main cause is the intractable edema caused by the rupture of the local lymphatic vessels and the accumulation of exuded lymph fluid in the subcutaneous tissue due to the external force. The disease is easily confused with hematoma, inflammatory edema and other subcutaneous edema diseases, resulting in failure of diagnosis and treatment. This case reports in detail the diagnosis and treatment process of lymphatic extravasation swelling caused by the rupture of lymphatic vessels at the wrist joint of sheep, which is a reference for clinical veterinarians.

Abstract:Experimental teaching is the core link in the teaching system of veterinary medicine, and experimental reports are an important carrier for students to master experimental principles, analyze experimental phenomena, and write experimental results. This is an integral part of experimental teaching. Currently, in the experimental teaching process of veterinary subjects, paperbased experimental reports are used as the main assessment mode for experimental courses. There are problems such as the inability to reproduce the dynamic experimental process and the inability to objectively and truly describe experimental phenomena in text. Traditional paperbased experimental reports can no longer meet the current teaching needs of college students. In the process of experimental teaching in veterinary subjects, most animal experimental phenomena cannot be properly described in words. Digital methods such as pictures, videos, and animations can more intuitively display the pathological changes in organs before and after the onset of animal diseases. This helps students deepen their experimental skills and professional knowledge by writing experimental reports. On this basis, a teaching model of digital experimental reports was proposed and promoted and applied in actual teaching practice. Through the implementation of digital experimental reports, students' experimental teaching classroom response has been good, and the teaching quality has been significantly improved. This article is summarized here. This is expected to provide a reference for improving experimental teaching methods and improving teaching quality.

Abstract:Sheep are the basis for survival and the hope of getting rich for ethnic minorities in rural areas of provinces and cities, and carry the stability and important mission of many ethnic minorities in frontier areas. Due to the cold climate and heavy rainfall in the northwest this year, frequent sandstorms, and harsh climate environment, if feeding and management are not in place, a large number of pathogens will exist in the polluted environment, and the chance of exposure to pathogens will be greater. Sheep foot rot will directly affect the production performance of sheep. and reproductive performance. This has caused huge economic losses to herdsmen and farmers. Based on the practical research and analysis of the causes of local sheep disease and clinical symptoms, we can provide symptomatic treatment with medicine and future preventive measures, which can be used as a reference for the majority of herdsmen and breeding enterprises.