SciELO - Scientific Electronic Library Online

 
vol.25 issue2Genetic parameters for growth traits of buffaloes (Bubalus bubalis Artiodactyla, Bovidae) in ColombiaEstimation of genetic parameters for age at first calving and calving interval in Blanco Orejinegro (BON) breed cattle populations in Colombia author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Revista Colombiana de Ciencias Pecuarias

Print version ISSN 0120-0690
On-line version ISSN 2256-2958

Abstract

MUNOZ MEJIA, Carmen Y et al. Genomic and phenotypic beef quality indicators of Charolais cattle in México. Rev Colom Cienc Pecua [online]. 2012, vol.25, n.2, pp.210-219. ISSN 0120-0690.

Tenderness and marbling are polygenic traits used as indicators of good meat quality. Among different genes related to meat quality, µ-calpaine (CAPN1) and thyroglobulin (TG5) have been specifically linked to tenderness and marbling, respectively. Objectives: to estimate the allelic and genotypic frequencies of markers in CAPN1 and TG5 genes, and relate their presence to beef carcass quality. Methods: CAPN1 and TG5 polymorphisms were identified by PCR-ACRS and PCR-RFLP, respectively, validating their putative effects on beef carcass using real time ultrasound in Charolais candidate sires (n=80). Results: computed genotypic frequencies in CAP4751 and TG5 showed Hardy-Weinberg equilibrium, while CAP316 expressed deviation from equilibrium. Association analysis indicated a significant effect of CAP4751 on rib eye area (REA) (p<0.05) and intramuscular fat (IMF) (p<0.10), while TG5 showed a significant trend on yield grade (YG). Conclusions: these results support the use of these markers for assessing traits related to meat quality, and warrant further studies to validate their use in cattle herds for breeding purposes.

Keywords : calpain; charolais cattle; PCR-ACRS; PCR-RFLP; thyroglobulin.

        · abstract in Spanish | Portuguese     · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License