Tipificação de três marcadores genéticos de importância comercial em gado Charolês: Implicações no gado de corte no México
DOI:
https://doi.org/10.17533/udea.rccp.324452Palavras-chave:
calpaína, miostatina, qualidade de carneResumo
Foram obtidas amostras de machos da raça Charolês registrado (N=130) candidatos a serem reprodutores para fazendas de cria, manejados em una central de teste de desempenho, com a finalidade de estimar as freqüências genotípicas e gênicas de três marcadores de um só nucleótido, associados com características de qualidade da carne bovina. Foram analisados os polimorfismos do gen da Calpaína, CAPN316 e CAPN4751, e a mutação Q204X, privada da raza charolês, no gen da Miostatina. Foram encontradas freqüências altas do alelo normal na CAPN316 (f= 0.85) e freqüências similares dos alelos normal e mutado para o marcador CAPN4751 (f=0.58 e 0.48, respectivamente). Foi encontrada baixa freqüência da mutação Q204X do gen Miostatina (f=0.03) devido à seleção negativa para a característica de dupla musculatura nos últimos 30 anos. O uso destes marcadores poderia ajudar a incentivar o desenvolvimento e fomento de mercados específicos para qualidade de carne e aumentar a rentabilidade dos sistemas de produção de carne atuais
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