全部文献期刊会议图书|学者科研项目
中外文文献  中文文献  外文文献
作者:F Buckley , R Modha ...
来源:[J].Value in Health(IF 2.191), 2009, Vol.12 (3), pp.A93-A94
作者:F Buckley , P Dillon ...
来源:[J].Livestock Production Science, 2003, Vol.83 (2), pp.191-203
摘要:Abstract(#br)(Co)variance components for milk yield, body condition score (BCS), body weight (BW), BCS change and BW change over different herd-year mean milk yields (HMY) and nutritional environments (concentrate feeding level, grazing severity and silage quality) were esti...
作者:F Buckley , KM Pierce ...
来源:[J].Reproduction in Domestic Animals(IF 1.392), 2012, Vol.47 (3), pp.407-411
摘要:Contents(#br)Data were available from 1657 heifers across 48 dairy farms which were visited once, on average 9 days (±5.2) prior to the mating start date (23 April, ±12.6). Blood samples were collected via coccygeal venepuncture for progesterone (P4) analysis, and animals we...

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×