Determinación del efecto de la somatotropina bovina recombinante (rBST) en la producción y composición de la leche de la raza brown ewiss mestizas en el Rancho Oss

Abstract

The research “determination of recombinant bovine somatotropin (rBST) effect was carried out in canton Huamboya in the production and composition of milk of mestizo Brown Swiss bread at OSS ranch” 3 treatments each one composed by the amount of mg of somatotropin used 400, 500 and 600 mg/cow, were applied to 15 cows first calving, the same that were analyzed under a randomized complete block design, and the averages separation according Duncan (P<0.05), in this way it could be shown that the best results in terms of milk producction belong to the treatment with 500 mg/cow of recombinant bovine somatotropin registering a production accumulated to 91 days of 465.28, 922.72 and 698.18 lt/cow for the treatment with 500 mg/cow of somatotropin helps to increase the milk production more tan other treatment used, this is due to the fact apparently 500 mg is a dose that balances to the animals, and helps them to receive of better way the nutrients, so in this way the production of milk is increased more than higher or lower doses, it should be taken into account that at higher levels of production, the nutritional requirements raise which it is necessary to provide to the animals of better pastures and a quality concéntrate, to ensure that it doesn’t exist a decreasing of the corporal condition of them.