搜索结果: 1-1 共查到“农学 culling rate”相关记录1条 . 查询时间(0.089 秒)
The relationship between culling rate, herd structure and production efficiency in a pig nucleus herd
pig computer simulation culling rate
2015/6/8
Computer simulation of sow culling was run in a nucleus herd. The specified constant culling rate from 15 to 21% was simulated for all parities. The resultant different age structure of a herd was stu...