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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
19/11/2008 |
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Data da última atualização: |
26/02/2015 |
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Autoria: |
BRITTO, C. M. C.; MELLO, M. L. S. |
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Título: |
Morphological dimorphism in the y chromosome of "pé-duro" cattle in the brazilian state of Piauí. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, v. 22, n. 3, p. 369-373, 1999. |
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Idioma: |
Português |
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Conteúdo: |
"Pé-duro" (hard foot) is a rare breed of beef cattle of European (Bos taurus taurus) origin, originated in northern and northeastern Brazil. Y chromosome morphology, outer genital elements and other phenotypic characteristics were examined in 75 "pé-duro" bulls from the Empresa Brasileira de Pesquisa Agropecuária (Embrapa) herd in the Brazilian State of Piauí. The purpose was to investigate possible racial contamination with Zebu animals (Bos taurus indicus) in a cattle that has been considered closest to its European origin (B. t. taurus). The presence of both submetacentric and acrocentric Y chromosomes, typical of B. t. taurus and B. t. indicus, respectively, and the larger preputial sheath in bulls with an acrocentric Y chromosome indicated racial contamination of the "pé-duro"herd with Zebu cattle. Phenotypic parameters involving horn, dewlap, ear, chamfer, and coat color characteristics, indicative of apparent racial contamination, were not associated with acrocentric Y chromosome. |
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Palavras-Chave: |
Gado Pé-duro. |
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Thesagro: |
Genética. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01483naa a2200157 a 4500
001 1070310
005 2015-02-26
008 1999 bl uuuu u00u1 u #d
100 1 $aBRITTO, C. M. C.
245 $aMorphological dimorphism in the y chromosome of "pé-duro" cattle in the brazilian state of Piauí.
260 $c1999
520 $a"Pé-duro" (hard foot) is a rare breed of beef cattle of European (Bos taurus taurus) origin, originated in northern and northeastern Brazil. Y chromosome morphology, outer genital elements and other phenotypic characteristics were examined in 75 "pé-duro" bulls from the Empresa Brasileira de Pesquisa Agropecuária (Embrapa) herd in the Brazilian State of Piauí. The purpose was to investigate possible racial contamination with Zebu animals (Bos taurus indicus) in a cattle that has been considered closest to its European origin (B. t. taurus). The presence of both submetacentric and acrocentric Y chromosomes, typical of B. t. taurus and B. t. indicus, respectively, and the larger preputial sheath in bulls with an acrocentric Y chromosome indicated racial contamination of the "pé-duro"herd with Zebu cattle. Phenotypic parameters involving horn, dewlap, ear, chamfer, and coat color characteristics, indicative of apparent racial contamination, were not associated with acrocentric Y chromosome.
650 $aGenética
653 $aGado Pé-duro
700 1 $aMELLO, M. L. S.
773 $tGenetics and Molecular Biology$gv. 22, n. 3, p. 369-373, 1999.
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Embrapa Meio-Norte (CPAMN) |
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