不同药物对荷斯坦青年母牛超排效果的研究

本研究以青年荷斯坦母牛为试验对象,在供体母牛发情周期的任意一天(发情当天除外),于供体牛阴道放置CIDR(孕酮的缓释装置).同时肌注Eb 2 mg和P4激素100 mg,在放置阴道栓的第五天开始按常规4天递减法肌肉注射FSH超数排卵.结果发现,应用进口FSH超排组,有23头发生卵巢囊肿,同时乳房有不同程度的发育,应用国产FSH超排组,只有3头牛发生卵巢囊肿,且其乳房并无发育.表明在超数排卵时,应根据所选药物及超排牛群内牛只个体的不同,选择适宜的超排剂量.

Effect of Hormone Variety on Superovulation Result of Young Holstein Cows

Young Holstein cows were studied in this research.CIDR(release igniter of progesterone) was put into vagina of donator in any day of oestrous cycle(except for oestrus day).And simultaneously cows received i.m.injections of Eb 2 mg and P4 100 mg.At the fifth day after CIDR was put,superovulation was practiced with i.m.injections of FSH by decrement dose within four days.The results showed that 23 cows had ovarian cyst,and breast development with different degree in import FSH group;only 3 cows have ovarian cyst,and no breast development.in domestic FSH group.These results indicate hormone dosage should be selected according to kinds of hormone and individual difference of cows in superovulation.