搜索结果: 1-1 共查到“家畜育种学 Nitrogen Excretion”相关记录1条 . 查询时间(0.089 秒)
Effects of dietary protein level on growth performance and nitrogen excretion of dairy heifers
Heifers Growth Performance Protein Nitrogen Excretion
2017/3/9
Protein supplementation is costly and can result in excess nitrogen (N) excretion. The objective of this study was to evaluate the effects of feeding different levels of dietary protein on average dai...