Association of CAPN1 and CAST gene polymorphisms with meat tenderness in Bos taurus beef cattle from Argentina

Genetics and Molecular Biology

Pablo Corva²  Liliana Soria¹  Alejandro Schor¹  Edgardo Villarreal¹  Macarena Pérez Cenci²  Mariana Motter¹  Carlos Mezzadra¹  Lilia Melucci²  Cristina Miquel¹  Enrique Paván¹  Gustavo Depetris¹  Francisco Santini¹  Juan Grigera Naón¹ 

[1] ,Universidad Nacional de Mar del Plata Facultad de Ciencias Agrarias Departamento de Producción AnimalBalcarce,Argentina

关键词: beef cattle;    CAPN1;    CAST;    genetic markers;    meat quality;   

DOI  :  10.1590/S1415-47572007000600006

来源: SciELO

【 摘 要 】

The activity of the calpains/calpastatin proteolytic system is closely related to the postmortem tenderization of meat. We investigated the association between beef tenderness and single nucleotide polymorphism (SNP) markers on the CAPN1 gene (SNP316, alleles C/G; SNP530 alleles A/G) and the CAST gene 3' untranslated region (SNP2870, alleles A/G). We sampled nine slaughter groups comprising 313 steers which had been reared in beef production systems in Argentina between 2002 and 2004 from crosses between Angus, Hereford and Limousin cattle. Minor allele frequencies for the markers were 0.27 to 0.46 (C), 0.02 to 0.18 (A), and 0.24 to 0.53 (A), respectively. The presence of CAPN1 markers had significant effects on meat shear force but no detectable effects were demonstrated for the CAST marker. The shear force of meat from steers with the SNP316 CC genotype was 11% lower than for the SNP316 CG genotype and 17% lower than for the SNP316 GG genotype. There were very few steers with the SNP530 AA genotype and, contrary to previous studies, meat from steers with the SNP530 GG genotype showed an 11.5% higher shear force than that from steers with the SNP530 GA genotype. Final body weight, carcass weight and rib eye area were not affected by any of the markers. These results support the concept that CAPN1 variants are associated with tenderness across a wide range of beef production systems.

【 授权许可】

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