Determinación de los valores genéticos mediante el ranqueo de las vacas holstein mestizas de la Estación Experimental Tunshi, para la implementación de un programa de inseminación artificial

Abstract

In the dairy herd of Tunshi Experimental Station, Higher Polytechnic School of Chimborazo, were determined the breeding values by the ranking of the crossbred Holstein cows to implement a program of artificial insemination. For this were used the production records period 2013-2015 of 42 cows that had at least one feeding between one and seven deliveries, being 30,11 ± 3,62 months of age at first birth. They presented an average of 194,80 ± 97,88 days of feeding, with 3039,08 ± 1237,20 kg/cow/lactation and 18,56 ± 3,47 kg/cow/day. It was determined that 57,14 % of the animals have a poor value of the likely ability to produce (MPHP), whereas 42,86 % are apt to remain in the herd for exceeding the average production. According to the ranking, the 30,95 % are of high genetic value, 11,90 % average, and 57,14 % low. So it is recommended to implement a plan for livestock improvement based on the acquired genetic values and in the linear classification of cows from the dairy herd through the implementation of a system of artificial insemination with the bull EMERALD-ACR-SA T-BAXTER for a high genetic value, RICKLAND ALTACEO-ET for an average value MOUNTFIELD ALTAEXACTER for a low value.