Efecto de tres marcadores genéticos sobre la eficiencia alimenticia de toretes en prueba de comportamiento

• Autores: Estela Garza-Brenner, Ana María Sifuentes Rincón, Felipe Alonso Rodríguez Almeida, Gaspar Manuel Parra Bracamonte, Williams Arellano Vera
• Localización: Ecosistemas y Recursos Agropecuarios, ISSN-e 2007-901X, ISSN 2007-9028, Vol. 6, Nº. 18, 2019, págs. 581-586
• Idioma: español
• DOI: 10.19136/era.a6n18.2135
• Títulos paralelos:
  • Effect of three genetic markers on the feed efficiency of young bulls in a behavior test
• Enlaces
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• Resumen
  • español

    RESUMEN Se evaluó el efecto de tres marcadores genéticos localizados en los genes de hormona de crecimiento (GH), factor de crecimiento semejante a insulina-1 (IGF-1) y leptina (LEP) sobre indicadores de eficiencia alimenticia, utilizando registros de 136 toretes de las razas Charolais, Angus y Brangus durante una prueba de comportamiento productivo. El análisis de asociación entre los genotipos obtenidos y los rasgos productivos evaluados mostró un efecto significativo del marcador GH-Alu sobre CRA (p = 0.032) en la raza Angus, y sobre el peso final ajustado (p = 0.041), en la Charolais; este resultado muestra que es posible su inclusión en los esfuerzos iniciales para la determinación de fenotipos de eficiencia en México y su consecuente aplicación en las estrategias de selección y mejoramiento genético.

  • English

    ABSTRACT The effect of three localized genetic markers in growth hormone (GH), Insulin-like growth factor 1 (IGF-1) and leptin (LEP) genes on feed efficiency indicators was evaluated using records from 136 young bulls of the Charolais, Angus and Brangus breeds during a productive behavior test. The analysis of association between the genotypes obtained and the productive traits evaluated showed a significant effect of the GH-Alu marker on CRA (p = 0.032) in the Angus breed, and in the Charolais one; this result shows that its inclusion in the initial efforts for the determination of efficiency phenotypes in Mexico and its consequent application in selection and breeding strategies are possible.

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