Evaluación de la hormona (bST) sobre el porcentaje de concepción en vacas Holstein mestizas sincronizadas con el protocolo OVSYNCH.

Abstract

The objective of this research was to evaluate the bovine recombinant somatotropin (bST) hormone on the percentage of conception in crossbred Holstein cows synchronized with the Ovsynch protocol, the problem was based on the lack of technical criteria for the reproductive management of the animals, which represents economic consequences by reducing milk production. For the study was necessary to define the type of research to be used, which was field and exploratory with a qualitative and quantitative approach, within the methods used were the deductive and analytical-synthetic; 20 cows that have met certain characteristics were taken as a sample, these animals belonged to the Achín farm in the Pallatanga canton, the unit of analysis was based on the following parameters: percentage of conception at day 30, overall fertility percentage, number of services per conception in each group and economic impact and worked with two groups: control and experimental. The main results are summarized in this way: the control group had a 40% conception rate at day 30 while the experimental group had a 70% conception rate. Thus, concluding that in terms of overall fertility, 60% of the cows were in the control group and 90% in the experimental group. In terms of costs, the cost for the control group was $686.80 and $751.85 for the experimental group. It is recommended that farmers consider the results generated for decision making, thus seeking to improve reproductive parameters, milk production per lactation, and improve the level of economic income.