2026-05-06 00:29 浏览次数 18
奶犊牛
study on breeding of dairy calves and production of meat calves was studied to use the source of holstein calves in our country effectively.
为合理有效的利用我国荷斯坦犊牛资源,本文进行了乳用犊牛培育和肉用犊牛生产两方面的研究。