乳酸菌类微生态制剂对肉鸡生产性能和免疫功能的影响

Effect of Lactic Acid Bacteria-probiotics on Growth Performance, Immune Function of Broilers

选用1日龄的AA肉鸡6000羽，随机分为2个组，每组3个重复，每个重复1000羽，对照组饲喂基础日粮，试验组在基础日粮中添加Q600-200产品150g／t。试验结果表明，在肉鸡日粮中添加乳酸菌类微生态制剂。与对照组相比，乳酸菌类微生态制剂组平均日增重显著提高4．95％（P〈0．05），平均日采食量提高1．82％（P〉0．05），料肉比显著降低0.05（P〈0．05），成活率显著提高3．53％（P〈0．05）；乳酸菌类微生态制剂组能够显著提高肉鸡胸腺指数和法氏囊指数（P〈0．05）：乳酸菌类微生态制剂组显著提高血清中T-SOD和T—AOC活性．显著降低血清中MDA含量。

Six thousand 1-day-old AA broilers were randomly allocated to control group and Lactic acid bacteria-probiotics group. Each group had 3 replicates and 1000 broilers in each rep- licate.The control group was fed basal diet, and the trial group was added 150g Lactic acid bacteri- a-probiotics per tons on basic ration. The results were as follows： Compared with the control group,the Lactic acid bacteria-probiotics increased feed intake by 1.82% （P〈0.05） , significantly increased average daily gain by 4.95% （ P〈0.05）, significantly decreased feed/gain by 0.05 （ P 〈0.05）, significantly increased rate of survival 3.53% （P〈0.05）.The indexes of thymus and bursa of fabricius in Lactic acid bacteria-probiotics group were significantly higher than that in control group（P〈0.05）.Activities of T-SOD and T-AOC in the serum were significantly higher in Lactic acid bacteria-probiotics group than that in control group（ P〈0.05 ）.Lactic acid bacteria- probiotics group had significantly a lower serum MDA content（P〈0.05）.