农业科学
鸡
On day the hatching and 1,2,3,5, 7,10, 14 days after hatching. 2 chicks from each group were weighed and killed.
分别在雏鸡出壳和1、2、3、5、7、10、14日龄时,从各重复组任取2只鸡,称重后解剖。
雏鸟
The highest disease incidence of ostrich chicks is 50%.
新城疫(ND)是鸵鸟养殖业中最主要的传染病之一,雏鸟的发病率高达50%。
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