Influence of extrinsic factors on superovulatory response in ongole cows
2009
Rao, M. Mutha | Naidu, K. Venugopal | Y. Umamahesh | Rao, K. Babu
The objective of the present study was to evaluate the effect of some extrinsic factors on ovarian responses in Ongole cows. 55 cyclic, parous cows were subjected to embryo collection on day 7 of superovulatory estrus induced by using folltropin - V, 200 mg in graded dose over 4 days. Age/parity did not affect the supervoulatory response. The total ova / embryo recovery was lower in winter compared to summer and rainy seasons. Stress of lactation was evident as the ovulation rate; total ova/embryo recovery and viable embryo production were significantly higher in dry cows.
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