Hair coat characteristics and production of Holstein cows in a tropical environment. II. Genetic aspects

Authors

  • Maria da Graça Pinheiro Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Estação Experimental de Zootecnia, Ribeirão Preto, SP
  • Roberto Gomes da Silva Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Melhoramento Genético Animal, Jaboticabal, SP
  • Carmen Silva Pereira Universidade Federal de Minas Gerais, Escola de Veterinária, Departamento de Zootecnia, Belo Horizonte, MG

Keywords:

Holstein cows, hair length, milk production, tropical environment

Abstract

Hair length was recorded for Holstein cows in two seasons (spring and fall) and related to milk production. Variance components were estimated by Restricted Maximum Likelihood Method under Animal Model, using the DFREML algorithm. Heritabilities for hair length and milk production were 0.20 and 0.26, respectively. Genetic, phenotypic, and environmental correlations between hair length and milk production were - 0.56; -0.19 and -0.02, respectively. Sire breeding values ranged from -1.68 to 1.25 for hair length and -1273.06 to 800.81 kg for milk production. Correlations between sire breeding values for milk production and hair length was negative and non significant.

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Published

2013-12-04

Issue

Section

ANIMAL BREEDING

How to Cite

Hair coat characteristics and production of Holstein cows in a tropical environment. II. Genetic aspects. (2013). Bulletin of Animal Husbandry, 55(1), 7-11. http://bia.iz.sp.gov.br/index.php/bia/article/view/945

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