Characterization of a Dairy Gyr herd with respect to its mitochondrial DNA (mt DNA) origin

Authors

  • Anibal Eugênio Vercesi Filho Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Nordeste Paulista, Mococa, SP
  • André Lima Dias Prefeitura Municipal de Mococa, Mococa, SP
  • Vera Lúcia Cardoso Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Ribeirão Preto, SP
  • Lenira El Faro Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Ribeirão Preto, SP
  • Giovana Krempel Fonseca Meringue Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Ciências Básicas, Pirassununga, SP
  • Flávio Vieira Meirelles Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Ciências Básicas, Pirassununga, SP

Keywords:

mtDNA, dairy Gyr, cattle

Abstract

The Zebu breeds were introduced in Brazil mainly in the last century by imports from the Indian subcontinent. When the Zebu cattle arrived, the national herd suffered a significative change by backcrossing the national cows of taurine origin with Zebu sires. These processes created a polymorphism in the mitochondrial DNA (mtDNA) in the Zebu animals with are in a major part derived from backcrossing and sharing mtDNA of taurine origin. To verify the maternal origin of cows belonging to the Dairy Gyr herd of APTA, Mococa 60 females were analyzed and 33 presented mtDNA from Bos taurus origin and 27 presented mtDNA from Bos indicus origin. None of these animals presented patterns of both mtDNA origins, indicating absence of heteroplasmy for these mitochondrial genotypes.

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Published

2010-01-13

Issue

Section

GENETIC

How to Cite

Characterization of a Dairy Gyr herd with respect to its mitochondrial DNA (mt DNA) origin. (2010). Bulletin of Animal Husbandry, 67(1), 91-95. http://bia.iz.sp.gov.br/index.php/bia/article/view/1085

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