妊娠母羊饲喂竹酢粉对羔羊生长性能、血液生理生化指标、免疫与抗氧化能力的影响

试验旨在研究妊娠母羊饲喂竹酢粉对羔羊生长性能、血液生理生化指标、免疫与抗氧化能力的影响。选择初产、妊娠约120 d的健康湖羊50只,随机分为2组,分别饲喂基础日粮（对照组）和基础日粮+2%竹酢粉（试验组）,饲喂3周,预饲期1周。分娩后,选择单羔母羊所产、3周龄左右、产期相近（1~4 d）羔羊20只（对照组和试验组各10只）测定其生长性能、血液生理生化、免疫与抗氧化能力等指标。结果表明：试验组羔羊的初生重（BW）、平均日增重（ADG）与对照组相比差异不显著（P>0.05）,但日增重提高4.74%。与对照组相比,试验组羔羊血液中白细胞、红细胞、血小板数量和血红蛋白浓度均无显著差异（P>0.05）;血清谷草转氨酶（GOT）活性显著降低（P<0.05）,总蛋白（TP）、白蛋白（ALB）、球蛋白（GLB）含量和白蛋白/球蛋白（A/G）有一定程度提高,总胆固醇（TC）含量、丙二醛（MDA）含量、超氧化物歧化酶（SOD）活性和总抗氧化能力（T-AOC）均有降低趋势（P>0.05）;试验组羔羊免疫球蛋白IgA、IgM和IgG含量高于对照组,但均无显著差异（P>0.05）。综上所述,在妊娠母羊日粮中添加2%竹酢粉可在一定程度上提高羔羊日增重,同时羔羊血清总蛋白、白蛋白、球蛋白、IgA、IgM和IgG含量也有一定程度提高。

Effects of Feeding Pregnant Ewes with Bamboo Vinegar Powder on Growth Performance,Blood Physiological and Biochemical Indexes,Antioxidant and Immune Ability of Lambs

The study was aimed to investigate the effects of feeding pregnant ewes with bamboo vinegar power on growth performance,blood physiological and biochemical indexes,antioxidant and immune ability of lambs.A total of 50 healthy,primiparous pregnant ewes at about 120 d pregnant age were chosen and randomly divided into 2 groups.The control group was fed basic diet and the experimental group was fed basic diet with 2% of bamboo vinegar power.Feeding period was 3 weeks (1 week for preliminary feeding).After delivery,the growth performance,blood physiological and biochemical indexes,antioxidant and immune ability of twenty three-week-old lambs with similar delivery date (1-4 d) were detected.The results showed as follows:The difference of BW and ADG between the two groups were not significant (P>0.05),but the ADG of experimental group was increased by 4.74% compared to control group.Compared with the control group,blood leukocyte,erythrocyte,platelet and hemoglobin contents of experimental group had no significant change (P>0.05),but GOT activity decreased significantly (P<0.05).TP,ALB,GLB and A/G increased in a certain extent,while the levels of TC,MDA,SOD activity and T-AOC had an decreased trend (P>0.05).Compared with the control group,there was an increased trend in IgA,IgM and IgG of experimental group,but the differences were all not significant (P>0.05).In conclusion,supplementing bamboo vinegar power in diets for pregnant ewes could improve ADG,increase serum TP,ALB,GLB,IgA,IgM and IgG contents in a certain degree.