果寡糖和枯草芽孢杆菌对肉鸡肠道菌群数量及生产性能的影响

Effects of Fructo-oligosaccharide and Bacillus Subtilis on Performance and Intestinal Microflora in Broilers

本试验选用360只1日龄AA肉公鸡,通过在饲粮中添加果寡糖和枯草芽孢杆菌,考察其对肉鸡肠道菌群数量及生产性能的影响。结果表明:果寡糖和枯草芽孢杆菌具有选择性地增加肉鸡盲肠中的乳酸杆菌等有益菌群的数量,减少大肠杆菌和沙门氏菌等有害菌的数量,二者的配合使用可以更好地调节肉鸡肠道微生态系统。果寡糖和枯草芽孢杆菌能在一定程度上改善肉鸡的生产性能,取得与添加金霉素相似的效果;果寡糖和枯草芽孢杆菌的配合使用可以取得更好的抗腹泻和促生长效果。

A total of 360 newly-hatched AA broilers were selected to investigate the effects of fructo-oligosaccharide and bacillus subtilis on performance and intestinal microflora in broilers. The result indicated that dietary supplementation with FOS or Bacillus alone had selective effects on increasing caecal population of beneficial bacteria such as Lactobacillus and decreasing population of harmful bacteria such as E. Coli and salmonella. However, supplemental aureomycin had non-selective effects on caecal microflora which inhibited all bacteria. Moreover, the combination of FOS and bacillus had much better improvement on caecal micro-ecosystem for broiler cockerels. Dietary addition of FOS or bacillus improved performance of broilers to the levels of those fed the diet with aureomycin and the combination of FOS and bacillus had better effects on reducing diarrhea and promoting growth.