搜索结果: 1-1 共查到“农业生产经济学 health”相关记录1条 . 查询时间(0.118 秒)
Associations of reproduction and health with the performance and profit of dairy cows
culling rate fertility health profit
2016/9/1
The objective of the study was to evaluate the associations of the variable intensity in culling of dairy cows and culling due to the movement disorders, mammary gland diseases, long calving interval,...