Eficiencia Ovulatoria del acetato de buserelina en diferentes niveles en presencia folicular en vacas lecheras de la Estación Experimental Tunshi.

Abstract

The main objective of the research was the evaluation of the ovulatory efficiency of buserelin acetate at different levels in follicular presence in dairy cows from the Tunshi Experimental Station, the study population consisted of 18 dairy cows of different ages that belonged to the herd. A completely random design, the analysis of Variance (ADEVA) and the comparison of means by Tukey (P <0.01) were used as analysis instruments using the statistical software Infostat. The results indicate that the use of buserelin acetate improves ovulatory efficiency and the fertility percentage of dairy cows, the most adequate dose of buserelin acetate was 2% since a higher percentage of cows that ovulated was caused, but not exactly at different times, therefore that artificial insemination was carried out gradually. According to the characteristics of the follicle. Not all protocols, especially those of fixed time worked as such, since each cow is a different world and hormones act depending on the nutritional status, and the time of year. Using the ultrasound technique, the percentage of pregnancy and follicular reabsorption in the right and left ovaries were determined, one month after applying the different levels of buserelin; as well as, the reproductive efficiency of the herd that was better when applying 2% (T2), because the pregnancy percentage was 100%, the use of the patch was used as an indication that there is manifestation of heat when other cows mount and they rub the patch changing its color. However, a greater presence of orange color is observed in the T2 treatment (2%).