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Estudio de frecuencias en marcadores de terneza en bovinos criollos argentinos

Authors: Estevez, Daniela Yael; Holgado, Pablo Francisco; Tessi, Jose Maria; Fernandez, E.; Genero, Enrique Ruben; Martinez, Ruben;

Estudio de frecuencias en marcadores de terneza en bovinos criollos argentinos

Abstract

La raza bovina criolla argentina se adaptó a producir en todos los ambientes que existen en nuestro país. Entre los atributos que contribuyen a la calidad de la carne bovina, la terneza es el más valorado por los consumidores, por lo cual constituye uno de los objetivos de selección de reproductores. La dificultad es que se trata de un carácter no cuantificable con el animal vivo. Afortunadamente, la información molecular permite la selección de los reproductores sin contar con información fenotípica. La Calpaína y la Calpastatina son dos enzimas que participan en la degradación de las proteínas de la fibra muscular post-mortem. Se han identificado en los genes que determinan la información para estas dos enzimas, variantes genéticas asociadas a mayor o menor terneza. Se genotipificaron 154 bovinos de raza criolla pertenecientes a cuatro poblaciones: La Rioja (n=41); Leales (n=37); Cruz de Guerra (n=40) y Patagónico (n=36) para los loci CAPN1 316, CAPN1 530 y CAST 2959. Las frecuencias génicas promedio en la raza criolla fueron: CAPN1 316 = C: 0,506; G: 0,494, para CAPN1 530 = G: 0,441; A: 0,559 y para CAST 2959 = A: 0,489; G: 0,511. El genotipo combinado más frecuente fue: CGGAAG (n=32), heterocigota en los tres locus, con tres alelos favorables y tres desfavorables para terneza. Las poblaciones más distantes genéticamente para los tres loci resultaron LR y LE y las más cercanas CG y PA. Los resultados indican que la raza bovina criolla presenta características genéticas que favorecen la terneza de la carne.

The Argentine Creole cattle was adapted to produce in all environments that exist in our country. Among the attributes that contribute to the quality of beef tenderness is the most valued by consumers, which is one of the objectives of cattle breeding selection. The difficulty is that it is a non-quantifiable character with the living animal. Fortunately, the molecular information allows the selection of the cattle breeding without phenotypic information. Calpain and Calpastatin are two enzymes that are involved in the degradation of post-mortem muscle fiber proteins. They have been identified in the genes that determine the information for these two enzymes, genetic variants associated with greater or less tenderness. Genotyped 154 cattle of Creole breed belonging to four populations: La Rioja (n = 41); Leales (n = 37); Cruz de Guerra (n = 40) and Patagonico (n = 36) for the loci CAPN1 316, CAPN1 530 and CAST 2959. The average gene frequencies in the creole breed were: CAPN1 316 = C: 0.506; G: 0.494, for CAPN1 530 = G: 0.441; A: 0.599 and for CAST 2959 = A: 0.489; G: 0.511. The most frequent combined genotype was: CGGAAG (n = 32), heterozygous at the three loci, with three favorable alleles and three unfavorable alleles for tenderness. The most genetically distant populations for the three loci were LR and LE and the closest CG and PA. The results indicate that the Creole bovine breed has genetic characteristics that favor tenderness of the meat.

Fil: Estevez, Daniela Yael. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad Nacional de Lomas de Zamora. Facultad de Ciencias Agrarias; Argentina

Fil: Holgado, Pablo Francisco. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigaciones Agropecuarias. Instituto de Investigación Animal del Chaco Semiárido; Argentina

Fil: Tessi, Jose Maria. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Catamarca-La Rioja. Estación Experimental Agropecuaria La Rioja; Argentina

Fil: Genero, Enrique Ruben. Universidad Nacional de Lomas de Zamora. Facultad de Ciencias Agrarias; Argentina

Fil: Martinez, Ruben. Universidad Nacional de Lomas de Zamora. Facultad de Ciencias Agrarias; Argentina

Fil: Fernandez, E.. Universidad Nacional de Lomas de Zamora. Facultad de Ciencias Agrarias; Argentina

Country
Argentina
Keywords

Calpastatina, https://purl.org/becyt/ford/1.6, Calpaina, https://purl.org/becyt/ford/1, Diversidad Genetica

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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