乳酸菌对断奶仔猪生产性能及免疫力的影响  

Effect of Lactobacillus on Productive Performance and Immunity of Weaned Piglets

作　　者：张常明[1] 李路胜[1] 王修启[1] 冯定远[1] 谭会泽[1] 

机构地区：[1]华南农业大学动物科学学院,广东广州510642

出　　处：《华南农业大学学报》2006年第3期81-84,共4页Journal of South China Agricultural University

基　　金：广东省自然科学基金重点项目(021047)

摘　　要：为了研究植物源性乳酸菌对断奶仔猪生产性能及免疫功能的影响，选取35日龄左右、断奶后平均个体质量为（7．48±0．23）kg的大长二元杂阉公猪165头，随机分成5个处理组，每个处理组3个重复，每个重复11头，试验期28d，分别饲喂基础日粮（Ⅰ组）、基础日粮＋金霉素300mg·kg^-1（Ⅱ组）、基础日粮＋乳酸菌10mL·头^-1·d^-1（HI组）、基础日粮＋乳酸菌30mL·头^-1·d^-1（Ⅳ组）、基础日粮＋乳酸菌60mL·头^-1·d^-1（Ⅴ组），结果表明：在断奶仔猪日粮中添加乳酸菌和金霉素能提高仔猪的平均日增质量、降低料增质量比，1-28d，Ⅱ、Ⅲ、Ⅳ、Ⅴ组同Ⅰ组比较，平均日增质量分别提高了14．8％、8．9％、30．5％和29．6％，料增质量比分别下降了9．6％、7．0％、20．5％和17．9％，1～14和1～28d的Ⅱ、Ⅳ和Ⅴ组的腹泻率为0，试验得出乳酸菌的最适添加量为30mL·头^-1·d^-1；乳酸菌可以提高血清T4和IGF-Ⅰ的水平；Ⅳ组和Ⅰ组比较：14d时淋巴细胞转化率显著提高（P〈0．05），28d时有增高的趋势但差异不显著（P〉0．05）；28d时血清中IgC．显著提高（P〈0．05），IgA、IgM有增高的趋势但差异不显著（P〉0．05）；表明乳酸菌对断奶仔猪的免疫功能有促进作用．In order to study the effect of plant source Lactobacillus on the productive performance and the immunity, 165 weaned piglets with average body mass of （7.48 ±0. 23 ） kg were selected, and they were divided into 5 groups （3 repeats per group and 11 piglet per repeat）. The five groups were fed basic diet （group Ⅰ ）, basic diet ＋ aureomycin 300 mg/kg （group Ⅱ ）, basic diet ＋ Lactobacillus 10 mL · （ piglet · day） ^-1 （ group Ⅲ）, basic diet ＋ Lactobacillus 30 mL · （ piglet · day） ^-1 （ group Ⅳ ） and basic diet ＋ LactobaciUus 60 mL · （ piglet · day） - 1 （ group Ⅴ）, respectively. The trial period of time was 28 d. The diet with Lactobacillus and diet with aureomycin increased the average daily gain（ADG） and decreased the ratio of feed/gain. At the end of the trial, the ADG of group Ⅱ,Ⅲ,Ⅳ and Ⅴ increased by 14. 8%, 8.9%, 30. 5% and 29. 6%, respectively, and the F/G decreased by 9.6%, 7. 0%, 20. 5% and 17.9%, respectively. The optimal supplement of plant source Lactobacillus was 30 mL · （ piglet · day）^ - 1. The concentration of T4 and IGF-Ⅰ in serum were increased by LactobaciUus. The blood lymphocyte transformation rate of group IV was significantly higher than that of group Ⅰ on day 14 （ P 〈 0. 05 ） and had the trend to increase on day 28 （P 〉 0. 05 ）. On day 28 of the trial, the level of IgG in serum of group IV was significantly higher than that of group Ⅰ （P 〈0. 05）and the levels of IgA,IgM in serum of group Ⅳ had the trend to increase than group Ⅰ （ P 〉 0. 05 ）. The results indicated that Lactobacillus could improve the immune function of the piglets.

关 键 词：乳酸菌 生产性能 免疫 仔猪 

分 类 号：S828[农业科学—畜牧学]