The effect of experimental Ostertagia ostertagi infections in stabled milking cows on egg output, serum pepsinogen levels, antibody titres and milk production.
The effect of experimental Ostertagia ostertagi infections in stabled milking cows on egg output, serum pepsinogen levels, antibody titres and milk production.
复制标题
稳定奶牛实验性 Ostertagia ostertagi 感染对产蛋量、血清胃蛋白酶原水平、抗体滴度和产奶量的影响。
作者：
A. Kloosterman;F. Borgsteede;M. Eysker
