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Exploring the Longissimus Muscle: Unraveling its Correlation with Meat Quality in Bos indicus and Crossbred Bulls
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Myostatin (GDF8) single nucleotide polymorphisms in Nellore cattle.

A B Grisolia1, G T D'Angelo, L R Porto Neto

  • 1Departamento de Apoio, Produção e Saúde Animal, Laboratório de Bioquímica e Biologia Molecular Animal, Universidade Estadual Paulista, Araçatuba, SP, Brasil. alexeiagrisolia@ufgd.edu.br

Genetics and Molecular Research : GMR
|September 5, 2009
PubMed
Summary

Researchers identified numerous genetic variations in the myostatin gene of Nellore cattle. These myostatin gene polymorphisms may be valuable for improving cattle breeding programs focused on meat production.

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Area of Science:

  • Genetics
  • Animal Science

Background:

  • The myostatin gene (GDF8) regulates skeletal muscle growth.
  • Polymorphisms in the myostatin gene are linked to the double muscling phenotype in various cattle breeds.

Purpose of the Study:

  • To investigate polymorphisms in the myostatin gene of Nellore cattle.
  • To compare these findings with known polymorphisms in taurine breeds.

Main Methods:

  • DNA sequencing of seven regions covering the three exons of the myostatin gene.
  • Analysis of DNA from 30 adult Nellore cattle.

Main Results:

  • Identified 3, 7, and 4 polymorphisms in exons 1, 2, and 3, respectively.
  • Discovered 37 polymorphisms in the untranslated region and 1 and 3 in introns 1 and 2.
  • Found both previously reported and novel polymorphisms in the Nellore cattle myostatin gene.

Conclusions:

  • The high allelic heterogeneity in the Nellore cattle myostatin gene may result from high mutation rates or artificial selection for meat production.
  • Identified polymorphisms offer potential applications in cattle breeding programs for meat quality enhancement.