Olnood Chen G, Beski Sleman S M, Choct Mingan, Iji Paul A
School of Environmental and Rural Science, Armidale 2351, Australia.
China Animal Husbandry Industry Company, Zhongmu Research Centre, Beijing 100095, China.
Anim Nutr. 2015 Sep;1(3):184-191. doi: 10.1016/j.aninu.2015.07.003. Epub 2015 Sep 10.
A total of 294 one-day-old Cobb broiler chickens were used to investigate the effects of four strains on gut microbial profile and production performance. The six dietary treatments, each with 7 replicates were: 1) basal diet (negative control), 2) one of four strains of (tentatively identified as , and an unidentified sp.) and 3) basal diet with added zinc-bacitracin (ZnB, 50 mg/kg). Results showed that the addition of probiotic spp. to the feed did not significantly improve weight gain, feed intake and feed conversion rate (FCR) of broiler chickens raised in cages during the 6-week experimental period, but tended to increase the number of total anaerobic bacteria in the ileum and caeca, and the number of lactic acid bacteria and lactobacilli in the caeca; and to significantly increase the small intestinal weight (jejunum and ileum). Furthermore, all 4 probiotics tended to reduce the number of in the ileum, compared with the control treatments. The probiotics did not affect the pH and the concentrations of short chain fatty acids (SCFA) and lactic acid in both the ileum and caeca.
总共294只1日龄的科宝肉鸡用于研究4种菌株对肠道微生物谱和生产性能的影响。六种日粮处理，每种处理有7个重复，分别为：1）基础日粮（阴性对照），2）四种菌株之一（暂定为、和一种未鉴定的菌），3）添加锌杆菌肽（ZnB，50 mg/kg）的基础日粮。结果表明，在6周的实验期内，向笼养肉鸡饲料中添加益生菌对其体重增加、采食量和饲料转化率（FCR）没有显著改善，但倾向于增加回肠和盲肠中总厌氧菌的数量，以及盲肠中乳酸菌和乳酸杆菌的数量；并显著增加小肠重量（空肠和回肠）。此外，与对照处理相比，所有4种益生菌都倾向于减少回肠中的数量。益生菌对回肠和盲肠的pH值以及短链脂肪酸（SCFA）和乳酸的浓度没有影响。
