EFECTO DEL ACETATO DE MELENGESTROL Y GONADOTROPINA CORIONICA EQUINA SOBRE LA INDUCCION DEL ESTRO POSPARTO EN HEMBRAS PARDO SUIZO ENCASTADAS DE CEBU
The present study was carried out in the town of Rosamorada Nayarit, in the facilities of the Centro de Bachillerato Tecnológico Agropecuario number 72. The objective was to evaluate the postpartum reproductive behavior, by means of the application of 3 gr. of Melengestrol Acetate (MGA) and 500 UI o...
| Autores: | , |
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2006 |
| País: | México |
| Institución: | Universidad Autónoma de Nayarit |
| Repositorio: | Repositorio Institucional Aramara de la UAN |
| Idioma: | español |
| OAI Identifier: | oai:dspace.uan.mx:123456789/1408 |
| Acceso en línea: | http://dspace.uan.mx:8080/jspui/handle/123456789/1408 |
| Access Level: | acceso abierto |
| Palabra clave: | bovinas encastadas de Cebú con Pardo ACETATO DE MELENGESTROL GONADOTROPINA CORIÓNICA bovine from Cebu with Pardo ACETATE OF MELENGESTROL CORONIC GONADOTROPIN CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA [6] |
| Sumario: | The present study was carried out in the town of Rosamorada Nayarit, in the facilities of the Centro de Bachillerato Tecnológico Agropecuario number 72. The objective was to evaluate the postpartum reproductive behavior, by means of the application of 3 gr. of Melengestrol Acetate (MGA) and 500 UI of Equine Chorionic Gonadotropin (eCG) for the synchronization of estrus in socketed females of Zebu with Swiss Brown. In order to develop the present research, 24 zebu-bonded bovine females with Swiss Brown were used, with an average age of 5 years, and an average body condition of 6 years. The females were managed in conditions of paddocks and corrals with calves at the foot, also the reproductive system of each cow was checked to determine the conditions in which they were. Three treatments were used with 8 females each, where: T1 = 3 gr MGA administered in the feed, T2 = 3 gr MGA administered in the feed plus 500 eCG units, and T3 = Witness. The variables under study were: X1= Percentage of animals in estrus, X2= Length of luteal phase, X3= Development of follicular dynamics, X4= Percentage of gestation. For statistical analysis we used the X2 test with Kruskall and Wallis, (P < 0.05). For the comparison of means the Tukey test was used. When evaluating the results obtained, a significant statistical difference was found (P < 0.05), the best results were obtained with treatment number one with 62.5% in estrus presentation, followed by treatment number two with 37.5% and finally the control with 12.5%. For the luteal phase length variable, no statistically significant difference was found (P > 0.05), with the lowest progesterone values on day 19 coinciding with the estrous presentation. |
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