期刊
JOURNAL OF DAIRY SCIENCE
卷 98, 期 3, 页码 1363-1401出版社
ELSEVIER SCIENCE INC
DOI: 10.3168/jds.2014-8475
关键词
grazing; substitution; milk response; feed conversion efficiency
资金
- Dairy Australia Limited (Southbank, Victoria, Australia) [C100000585]
- DairyNZ (Newstead, Hamilton, New Zealand) [FD 1205]
- New Zealand Ministry of Primary Industries, through the Sustainable Farming Fund (Wellington, New Zealand) [12-021]
In pasture-based dairy systems, supplementary feeds are used to increase dry matter intake and milk production. Historically, supplementation involved the provision of the same amount of feed (usually a grain-based concentrate feed) to each cow in the herd during milking (i.e., flat-rate feeding). The increasing availability of computerized feeding and milk monitoring technology in milking parlors, however, has led to increased interest in the potential benefits of feeding individual cows (i.e., individualized or differential feeding) different amounts and types of supplements according to one or more parameters (e.g., breeding value for milk yield, current milk yield, days in milk, body condition score, reproduction status, parity). In this review, we consider the likely benefits of individualized supplementary feeding strategies for pasture-based dairy cows fed supplements in the bail during milking. A unique feature of our review compared with earlier publications is the focus on individualized feeding strategies under practical grazing management. Previous reviews focused primarily on research undertaken in situations where cows were offered ad libitum forage, whereas we consider the likely benefits of individualized supplementary feeding strategies under rotational grazing management, wherein pasture is often restricted to all or part of a herd. The review provides compelling evidence that between-cow differences in response to concentrate supplements support the concept of individualized supplementary feeding.
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