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畜牧人

標題: 公牛系譜中TPI的計算公式 [打印本頁]
作者: cxq628    時間: 2010-1-15 15:57
標題: 公牛系譜中TPI的計算公式

TPI=



其中：
PTAP= PTA Protein蛋白育種值    PTAF= PTA Fat脂肪育種值
PTAT= PTA Type體型育種值DF= STA Dairy Form棱角性STA值
UDC= Udder Composite乳房結構育種值FLC= Feet & Legs Composite肢蹄結構育種值
PL= PTA Productive Life生產壽命育種值SCS= PTA Somatic Cell Score體細胞評分
DPR= PTA Daughter Pregnancy Rate女兒受孕率DCE= PTA Daughter Calving Ease女兒難產率
DSB= PTA Daughter Stillbirth女兒死亡率
公式看不清具體查看http://www.holsteinusa.com/news/press_release2010.jsp#pr2010_02
作者: steve98    時間: 2010-1-27 10:11
學習一下，想育肥還要這么多概念
作者: cxq628    時間: 2010-1-27 16:01
公式沒有顯示出來。不好意思。不知道怎么能出來。



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亚洲日韩精品无码专区网站_亚洲日本一区二区_亚洲Av无码专区国产乱码DVD_亚洲精品永久在线观看 
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