Evaluation of the productive and reproductive performance of females with different fractions of genes of european and zebu breeds in a dairy herd

Authors

  • Ana Carolina do Nascimento Alves Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Piracicaba, SP
  • Maria Lúcia Pereira Lima 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
  • Maria da Graça Pinheiro 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
  • José Ramos Nogueira 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
  • 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
  • Sônia Carrijo Poteiro Instituição de Ensino Moura Lacerda, Ribeirão Preto, SP

Keywords:

crossbreding, productive traits, reproductive traits

Abstract

Evaluation of the productive and reproductive performance of a dairy herd was carried out using animals distributed in six different genetic groups composed by European and Gir breeds. It was used 523 lactation from 229 cows that calving between years 1991 and 2003. The reproductive management of crossbred cows were reproduction controlled and artificial insemination during all year. It was analyzed the effect of genetic groups, year of calve and calving station. The traits used in analyses were age at first calving, calving interval, lactation length and total milk yield. There was effect of genetic group (P<0.01) for age to the first calving. The average of age to the first calve had been lower (P< 0.01) for cows 1/2 and 3/4 of European genes. The calving interval of animals with 1/2 of zebu genes had been lower (P<0.05) then the animals with more than 15/16 of European genes. The total milk production was higher for genetic groups 1/2, 3/4, 7/8 and 15/16 then animals with less than 1/2 and 5/8 genes of European breed. The results were 2606, 2807, 2789, 2649 kg of milk yield for 1/2, 3/4, 7/8 and 15/16 compared to 1827 kg and 2368 kg of milk yield for animals with less than 1/2 and 5/8 genes of European breed, respectively. There was significant effect of station of calve (P<0.05) and age of the cow to calve (P<0.01) on total milk yield. The year of calve affected (P<0.01) the age of first calving and the lactation length (P<0.05).

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Published

2013-11-28

Issue

Section

GENETIC

How to Cite

Evaluation of the productive and reproductive performance of females with different fractions of genes of european and zebu breeds in a dairy herd. (2013). Bulletin of Animal Husbandry, 61(2), 151-159. http://bia.iz.sp.gov.br/index.php/bia/article/view/1323

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