共 3 条
[2]
家畜繁殖原理[M]. 江苏科学技术出版社 , 谢成侠 编著, 1983
[3]
Selclium content,glutathione peroxidase level in fresh bull semen and its relationship to motility of spermatozoa after freezing-thawing .2 Slawcta R,Wasowicz W,Laskowska T. J Vet Med . 1988