Effect of injecting prostaglandin F2α on uterine involution and index fertility of dairy cow with postpartum defect
Subject Areas : Journal of Large Animal Clinical Science Research(JLACSR)
Keywords: Prostaglandin F2α, Postpartum defect, Uterine involution, Interval between partum to service, Conception rat,
Abstract :
The present study was designed to investigate the effects of administration of prostaglandin F2α during early postpartum (15-20 day) on uterine involution, interval one, two, three and four service related conception, percentage of conception one, two, three and four service, the number of services per conception, open days and calving interval in dairy cows with postpartum defect. A total of 40 Holstein dairy cows with postpartum defect were randomly distributed into 2 groups; treatment group (n=20) and control group (n=20). Treatment group was intramuscularly injected with 2 doses (2 cc pre inject) prostaglandin F2α, 8 h apart on day 15-20 postpartum. The results showed that there was a significant difference between treatment group and control group for uterine involution, interval one and two service related conception (P<0.05). The percentage of conception one service was improved by injected prostaglandin F2α (40 % for treatment group vs. 25 % for control group). Also there was a significant difference between treatment group and control group for number of services per conception, open days and calving interval (P<0.05) as treatment group had the lowest number of services per conception, open days and calving interval. The results of present study showed that administration 2 doses of prostaglandin F2α 8 h apart on day 15-20 postpartum in dairy cows with postpartum defect can be beneficial effects on fertility index.
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