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Behavioural signs and fertility response following spontaneous and ovsynch induced estrus in Sahiwal cows

The study was designed to evaluate behavioural estrus signs and fertility response following spontaneous and Ovsynch induced estrus in Sahiwal cows. Group 1: (Spontaneous estrus group; n=20) cows were observed visually and ultrasonographically from a random day till occurrence of spontaneous estrus and ovulation. Group 2 (Ovsynch group; n=10) were administered with standard Ovsynch protocol (two GnRH 20µg on day 0 and 9 and PGF 500µg on day 7, i.m.) started at random day of estrous cycle to synchronize estrus and ovulation. | Behavioural signs and fertility response following spontaneous and ovsynch induced estrus in Sahiwal cows