Parity does not affect the reproductive response of Suizo Americano cows submitted to embryo transference in tropical areas of Guerrero
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Abstract
groups (n = 13/each) according to their parity (multiparous and nulliparous). Donor cows underwent a synchronization and superovulation program. Subsequently, the recipient cows were treated with fresh ET. The percentage of cows in estrus was higher on day 1 in multiparous cows than in nulliparous cows (P <0.05). On the other hand, gestation percentage, estrus time, embryo stage and pregnancy percentage per uterine horn were not significantly affected among the experimental groups (P> 0.05). In conclusion, parity did not affect the reproductive response of multiparous and nulliparous recipient cows subjected to a fresh ET program under tropical conditions.
Key words: embryos, progestogens, estrus response, recipient and donor cows
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