乳酸菌及其培养液对肉鸡盲肠菌群的影响

采用给肉鸡饲喂乳酸菌及其培养液,检测其对肉鸡肠道菌群影响。300只AA肉鸡随机分5组,基础日粮(对照)、基础日粮 1%乳酸菌菌粉、基础日粮 1%乳酸菌菌液、基础日粮 1%乳酸菌残液、基础日粮 1%乳酸菌灭活菌液。结果表明,在14、28、35、42日龄时日粮中添加乳酸菌菌粉和乳酸菌菌液能显著抑制盲肠中大肠埃希菌的增殖,增加乳酸菌和双歧杆菌的数量(P<0.05);培养残液和灭活菌液总体上对盲肠菌群无明显影响(P>0.05)。

Effects of Lactobacillus and Its Culture Fluid on Cecum Microflora of Broilers

Fed broilers with Lactobacillus and its culture fluid in this experiment,detect its effect on cecum microflora.The 300 chicks were randomly assigned to five group from 1 to 42 d of age,dietary treatments,consisting of the basal diet(control),basal diet 1%Lactobacillus,basal diet 1%culture fluid,basal diet 1%culture supernatants or basal diet 1%inactivated culture fluid.the results showed that Lactobacillus and its culture fluid at 14,28,35,42 day could restrain reproduction of Escherichia coli,and promoted Lactobacillus and Bifidobacterium,the effect was significan(P<0.05);the effect of Lactobacillus culture supernatants and inactivated culture fluid were not significant(P>0.05).