The diagnosis importance in dosing ovarian and adenohypohysis hormones in dairy cow ovarian functional disorders

Abstract

The results of the hormonal dosages in cattle with ovarian hypotrophy of the first degree have shown an ovarian hypofunction by adenohypophysary hyposecretion, having FSH, LH and progesterone secretory insufficiency and a low level of prolactine. The same situation was registered in cows presenting an ovarian hypotrophy of the second degree. In the females diagnosed with persistent luteal body, the values of FSH/LH ratio had similar values. In cows with repeated artificial insemination syndrome, the FSH/LH ratio was of 1.29/l for FSH so, we may assess that the main factor of repeated artificial insemination is an adenohypophysary hyposecretion of L.H. For restoring the normal titre of LH and starting the ovulation we recommend that products with LH effect (HCG 1500 U.I.; Gn-RH 2.5 ml) should be administered in cows.