补饲益生菌对湖羊羔羊生长性能、免疫功能及血液生化指标的影响

Effects of probiotics supplementation on growth performance, immune function and blood biochemical indexes of Hu-sheep lambs

摘要:

试验旨在探究不同处理组对羔羊生长性能、免疫功能及血液生化指标的影响。选择体质健康、体重相近的湖羊羔羊36只，随机分成对照组（基础饲粮）、试验Ⅰ组（70%基础饲粮+30%苜蓿草粉）和试验Ⅱ组（70%基础饲粮+30%苜蓿草粉+1%益生菌），试验期60天。结果表明：各组羔羊试验末重、干物质采食量及料重比均无显著性差异（P > 0.05），试验Ⅱ组平均日增重比对照组提高10.40%（P <0.05），与试验Ⅰ组无显著差异（P > 0.05）；试验Ⅱ组谷草转氨酶、碱性磷酸酶显著低于对照组（P <0.05），试验Ⅰ组和Ⅱ组甘油三脂显著低于对照组（P < 0.05）；试验Ⅱ组IgG含量显著高于其他两组（P <0.05），IgA和IgM含量各组之间差异不显著（P > 0.05）。因此，饲粮中补饲益生菌+饲草纤维能够提高羔羊生长性能，改善部分血清生化指标，增强免疫机能及机体抵抗力。

Abstract:

The experiment was conducted to investigate the effects of different treatment groups on growth performance, immune function and blood biochemical indexes of lambs. Thirty-six healthy Hu sheep lambs with similar body weight were randomly divided into control group (basal diet), trial group Ⅰ(70% basal diet +30% alfalfa meal) and trial groupⅡ (70% basal diet +30% alfalfa meal +1% probiotics). The experiment lasted for 60 days. The results showed as follows: there were no significant differences in final weight, dry matter intake and ratio of feed to gain among all groups (P > 0.05), and the average daily gain in test groupⅡ was 10.40% higher than that in control group (P <0.05), but no significant difference between test groupⅠ and control group (P > 0.05). Aspartate aminotransferase and alkaline phosphatase in trial groupⅡ were significantly lower than those in control group (P <0.05), triglycerides in trial groupsⅠ and Ⅱ were significantly lower than those in control group (P <0.05); The IgG content of test group Ⅱ was significantly higher than that of the other two groups (P <0.05), but the IgA and IgM contents were not significantly different among groups (P > 0.05). Therefore, dietary supplementation with probiotics + forage fiber can improve growth performance of lambs, improve some serum biochemical indexes, enhance the immune function and body resistance of lambs.