The Effect Methodology of FSH Injection on The Ovulation Rates of Dairy Cattle

ABSTRACT: Tice effect methodology of FSH injection on the ovulation rates of dairy cattle was study. Thirteen lactating cows with body weight between 300 to 400 Kg, superovulated by injection a total of 36 mg FSH Superovulation was started at any day of their cycle between day 9 to 14. The FRI was given twice daily in 12 hours intervals in decreasing doses for 3 and 4 days. Estrumate was injected on day 3 of superovulation (5 th FSH injection) and all donors were artificially inseminated with frozen semen on the onzct of Oestrus, 12 hours and 24 hours afterwith. The embryo were non surgically collected on day seventh. Majority of embryo was in morulla stages (80.2 %) and 25.2 % was classified as untransferable embryos. Both the 3x2 and 4x2 regime were equally effective for the sulyerovulation of dairy cattle. The mcws size of ovary (cm), total numbers of corpus lutheum (CL) and embryo (E) were 4.5 , 3.0 and 6.0 and Si , 8.6 and 6.6 for 3x2 and 4x2 regime respectively. Right ovary was more active than left ovary. The mean numbers of CL the right ovary (4.8) was significantly higher (