Marcadores de selección en cerdos Pampa Rocha: comparación con razas autóctonas de España y Portugal
Selection markers in Pampa Rocha pigs: a comparison with autochthonous breeds of Spain and Portugal
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Objetivo. El análisis de marcadores de selección permite obtener datos de la vida evolutiva de una raza o línea y permite también evaluar la conveniencia o no de su uso en programas de mejora genética. Hemos evaluado SNPs en cuatro genes (IGF2, MC4R, PRKAG3 y PEPCK-C), que tienen importantes efectos fenotípicos, en cerdos de la raza Pampa Rocha, una raza criolla, y hemos comparado sus frecuencias alélicas con cerdos de diversas razas autóctonas y líneas de España y Portugal no sometidas a selección así como con jabalíes y cerdos de la raza Piétrain. Materiales y métodos. Los SNPs fueron analizados mediante diversa técnicas de RT-PCR. Resultados. Los resultados de los análisis muestran una similitud de frecuencias alélicas entre los cerdos de la raza Pampa Rocha y los cerdos autóctonos de la península ibérica sobre todo en el gen IGF2 y, en menor medida en el gen PEPCK-C. Sin embargo difieren considerablemente en el caso del marcador MC4R y, también en menor medida, en PRKAG3. En el trabajo se discute el uso potencial de los resultados obtenidos para orientar la selección genética de cerdos de la raza Pampa Rocha. Conclusiones. Nuestros resultados demuestran la peculiaridad de la raza Pampa Rocha con respecto a los marcadores estudiados.
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