Resumen de Double muscling II. - Genetic determination
Denise Aparecida Andrade de Oliveira, Célia Raquel Quirino, Claudia Salviano Teixeira
Mutations in the myostatin gene that increase muscle mass, charaterize double muscling or muscular hypertrophy phenotipe in some cattle breeds. Despite of some restrictions related to calving easy, carcass of these animals are considered superior, resulting in higher meat yield, higher proportion of expensive meat cuts and lean and tender meat, and have been used in production systems worldwide. The possibility to identify the carriers of the mutation has been decisive in meat production systems. The mutation was identified in others species of economic interest, such as sheep, demanding new researchs and strategies to improve the production systems.
