期刊
ANIMAL FEED SCIENCE AND TECHNOLOGY
卷 145, 期 1-4, 页码 41-52出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.anifeedsci.2007.05.035
关键词
direct-fed microbial; weight gains calves; Propionibacterium
资金
- Hinton, NSW, Australia
- Vacy, NSW, Australia
A novel bacterial strain isolated in Australia, Propionibacterium jensenii (PJ702), was examined for its potential as a direct-fed microbial to improve weight gain in calves. Holstein bull calves, 24, were randomly allocated into a Treatment or Control group and held under simulated commercial calf rearing conditions. Both groups were treated identically, with the exception that the Treatment calves were given between 1.1 x 10(8) and 1.2 x 10(9) cfu/(kg day) of PJ702. Faecal recovery of PJ702 front the Treatment calves from week 2 indicated successful gastrointestinal transit of the bacterium, and blood haematology and biochemistry indicated no adverse effects following PJ702 administration. There were improvements in weight gains with the Treatment group during both the pre-weaning (P=0.001) and the weaning period (P=0.04). Eighteen weeks after cessation of treatment, and removal to an extensive farming operation, Treatment calves remained heavier to the Control calves (P=0.03), with a final weight difference between the groups of 21.3 kg. (C) 2007 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据