Dosis y efectos de gonadotropina coriónica equina en vacas y vaconas brahman sometidas a protocolos de sincronización

The study was developed with the objective of evaluating the effects of Equine Chorionic Gonadotropin (eCG) doses in Brahman cows and heifers subjected to ovulation synchronization protocols on their reproductive parameters. 72 Brahman breed animals were developed, a 6-day J-synch synchronization protocol was applied for cows, doses of 100IU of eCG first group and 200IU of eCG second group, cows received J-synch protocol 7 days, doses of 300IU of eCG first group and 300IU of eCG second group, the homogeneity of the variance and normal distribution of the data was verified, by means of the Shapiro Wilk test, the statistical T Student test was used for equal samples with a significance level of 5% to examine if there are differences between the variables in study, the methodologies were processed through InfoStat (2020). The results show that the dominant follicle diameters on the day of withdrawal and ovulatory follicle diameters do not differ between the samples for the cow treatments and for the cow treatments with (p> 0.05). The doses of (eCG) with greater ovulatory response and better pregnancy rate were obtained in the use of lower doses for the treatments of the cows 300IU and for the treatments of the cows 100IU without significant inference (p> 0.05) before the increased use of (eCG). The lower use of doses of (eCG) did not affect the reproductive parameters evaluated against the higher doses, so the general hypothesis of the research is accepted.

• Autor principal: Bravo Giler, Lenin Armando (author)
• Otros Autores: Ferrín Giler, Cristhian Javier (author)
• Formato: bachelorThesis
• Lenguaje: spa
• Publicado: 2021
• Materias: J-Synch; Folículo; Cuerpo lúteo; Tasa de preñez
• Acceso en línea: http://repositorio.espam.edu.ec/handle/42000/1624