Evaluación del hato lechero de la Estación Experimental Tunshi, utilizando el programa de cruzamiento ganadero select mating service (SMS)

Abstract

The dairy herd was evaluated using the Livestock Breeding Program Select Mating Service (SMS) in the facilities of the Experimental Tunshi Station of FCP of Espoch, the research didn’t work with an experimental design only a descriptive statistics was applied to 68 experimental units. The results deduce that most of the linear characteristics evaluated in Holstein Friesian crossbred cows of Experimental Tunshi station, had average scores compared with the ideal of the breed, but there are moderated problems in udders and legs. The cows that have the highest accentuation of these problems are those that exceed the third lactation, consequently they are mostly mothers of young animals. Of the sires used some years ago with registration in the National Association of Animal Breeders (NAAB), it can be found that, they are not carriers of haplotypes advantageously that affect in the fertility. Using sires proposed by the SMS, a major genetic progress is estimated, having an expected average production of progeny of 8314.7 kg of milk more than the current average herd in a year. So it is recommended to use the SMS program, because it applies results if research on traits if the type that are highly correlated with longevity which are of economic importance to the herd, computerized analysis, actual knowledge to raise the best cows around the world using strong sires in the traits in which the rodeo is weak.