Evaluación de dos protocolos de sincronización de celo en la hacienda San Jorge de Balcashi, Provincia de Chimborazo

Abstract

The objetive of this research was to evaluare two synchronization protocols against a control treatmente, with an IATF at 30 hours, the control treatmente being T0,CIDR protocol T1 and the HEATSYNCH T2 protocol an the San Jorge de Balcashi farm,located in the Quimiag parish of the Riobamba cantón. Fifteen Holstein breed cows were used , where a Completely RandomD Design and five repetions were developed in each treatment compared to a control treatment; treatment one consisted of carrying out the CIDR protocol using an Intravaginal device, Estradiol Benzoate , Prostaglandins, and in the T2 HEATSYNH protocol GnRH, Prostaglandins and Estradiol Benzoate were appplied, for the determination of initial-final body weights and conditions; the determination of the percentage of presence of heat, and gestation at 45 days; on the other hand, the costo of the pregnant cow for each treatment was carried out. It was obtained that,in T2 , 80% of pregnancies ocurred compared to T1, 60%,and T0, with 20%. The one with the best result in cow/pregnant woman was T2 with $44,49, compared to T1 and T0 with values of 36$ and $59,81, T2 being the most effective , where it manages to increase the pregnancy percentage and economic profitability, so it is recommended to replicate the work in another breed with different levels of GnRH, with an IATF with different schedules.