Técnicas de biotecnología reproductiva en la sibcronización de estro e inseminación artificial versus manejo reproductivo convencional en vacas holstein mestizas

Abstract

The community “Gauron Cochapamba”, Guamote country, province of Chimborazo, it was evaluated two protocols for induction of estrus and artificial insemination versus natural mating in Holstein crossbred cows, with eight replications per treatment (T.U.E. 1 cow), with a total of 24 cows, in a period of 120 days of study. Which were distributed under a completely randomized design, and the numerical data were processed in the statistical program SPSS (2010) and Excel (2010), for the analysis of variance (ADEVA), Duncan´s test for the separation of means to the level of significance of P ≤ 0.05 and P ≤ 0.01, regression and correlation analysis, and X2 test. Evaluating different productive and reproductive parameters. Determined that using the implant CIDR and artificial insemination, the results were superior to be compared with conventional reproductive management, and gonadotropin and artificial insemination, whereas cows showed the best values in weight gain 11,38kg, 87,50% fertilization rate, time to the presence of heat 47,50h, length of estrus 17,88h, artificial insemination 1,25 and the presence of effective heat 93,75% efficiency. As the cost to impregnate a cow was 62,04 USD as opposed to conventional 107,40 USD reproductive management which is a very high for small producers by it is recommended the use of biotechnology techniques reproductive efficiency presenting to pregnant cows in the rural sector where small producers are