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  5. Evaluation of feed conversion efficiency and nitrogen use efficiency with components of the New Zeal

Evaluation of feed conversion efficiency and nitrogen use efficiency with components of the New Zeal

来源 :第11届世界畜产大会(WCAP2013) | 被引量 : 0次 | 上传用户：luohua0891
【摘 要】
：
Selection for efficiency in dairy cows has the potential to improve herd production and environmental sustainability.Breeding worth (BW),production worth (PW) and lactation worth (LW) are breeding ind
【作 者】
：
Nicole M.Wheadon Long Cheng Thomas Vazhathara Helen Hague Innocent Rugoho Grant R.Edwards 
【机 构】
：
Faculty of Agriculture and Life Sciences,PO Box 84,Lincoln University,Lincoln 7647,Christchurch,New
【出 处】
：
第11届世界畜产大会(WCAP2013)
【发表日期】
：
2013年2期
【关键词】
：
Feed efficiency Nitrogen efficiency Breeding worth Production worth Lactation wo 
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Selection for efficiency in dairy cows has the potential to improve herd production and environmental sustainability.Breeding worth (BW),production worth (PW) and lactation worth (LW) are breeding indexes used to rank cows based on expected ability to breed profitable and efficient replacements.
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