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Georeferenced evaluation of genetic breeding value patterns in Brazilian Holstein cattle.
Costa, N S; Hermuche, P; Cobuci, J A; Paiva, S R; Guimaraes, R F; Carvalho, O A; Gomes, R A T; Costa, C N; McManus, C M.
Afiliación
  • Costa NS; Universidade de Brasília, Brasília, DF, Brasil.
  • Hermuche P; Universidade de Brasília, Brasília, DF, Brasil.
  • Cobuci JA; Departamento de Zootecnia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.
  • Paiva SR; EMBRAPA Sede, Brasília, DF, Brasil.
  • Guimaraes RF; Universidade de Brasília, Brasília, DF, Brasil.
  • Carvalho OA; Universidade de Brasília, Brasília, DF, Brasil.
  • Gomes RA; Universidade de Brasília, Brasília, DF, Brasil.
  • Costa CN; EMBRAPA Gado de Leite, Juiz de Fora, MG, Brasil.
  • McManus CM; Universidade de Brasília, Brasília, DF, Brasil concepta@unb.br.
Genet Mol Res ; 13(4): 9806-16, 2014 Nov 27.
Article en En | MEDLINE | ID: mdl-25501190
The aim of this study was to analyze the relationship between environmental and genetic values for milk production and type traits in Holstein cattle in Brazil. The genetic value of 65,383 animals for milk production and 53,626 for type classification were available. Socioeconomic and environmental data were obtained from the Brazilian Institute of Geography and Statistics, the Food and Agriculture Organization of the United Nations, the National Aeronautics and Space Administration, and the National Institute of Meteorology. Five to six clusters were generated for each of the groups of type traits and production levels. The relationships between these traits were assessed using the STEPDISC, DISCRIM and CANDISC procedures in SAS(®). Traits within the clusters behaved differently, but, in general, animals with lower genetic values were found in environments that were more stressful for animal production. These differences were mainly associated with temperature, humidity, precipitation and the Normalized Difference Vegetative Index. Genetic values for milk production showed best discrimination between different environments, while type traits showed poor discrimination, possibly because farmers mainly select for milk production. Environmental variations for genetic values in dairy cattle in Brazil should be further examined.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cruzamiento / Lactancia / Carácter Cuantitativo Heredable / Industria Lechera / Fertilidad Tipo de estudio: Prognostic_studies Límite: Animals País/Región como asunto: America do sul / Brasil Idioma: En Revista: Genet Mol Res Asunto de la revista: BIOLOGIA MOLECULAR / GENETICA Año: 2014 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cruzamiento / Lactancia / Carácter Cuantitativo Heredable / Industria Lechera / Fertilidad Tipo de estudio: Prognostic_studies Límite: Animals País/Región como asunto: America do sul / Brasil Idioma: En Revista: Genet Mol Res Asunto de la revista: BIOLOGIA MOLECULAR / GENETICA Año: 2014 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil