Abstract
The studies were carried out on 6 females from a single farm, females were subject to from donor during January - December 2007. For artificial insemination of the donors, straws with frozen semen from two males (Odislait and Lecuyer) were used. The receivers were synchronized with the donors, both naturally (3 cows, 50%) and medically (3 cows, 50%). The average gestation period of the receivers was 284.71 days, with limits of between 282 and 287 days. Following the pregnancy, 7 calves were obtained from the 6 females, a female having twin gestation. Embryotransfer was made using both fresh embryos and frozen embryos in liquid nitrogen. The first heat after parturition was detected at 54.86 days on average, between 52 and 55 days post-partum. The first artificial insemination was made at 88.57 days on average, with limits of between 87 and 92 days. The period between conception and parturition varied between 107 and 154 days with an average of 122 days.
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Schedule a callMore From: Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Veterinary Medicine
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