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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
26/04/2000 |
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Data da última atualização: |
26/04/2000 |
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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 "Pe-duro" cattle in the Brazilian State of Piaui. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, Ribeirao Preto, v. 22, n. 3, p. 369-373, 1999. |
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Idioma: |
Inglês |
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Conteúdo: |
"Pe-duro" (hard foot) is a rare breed of beef cattle of European (Bos taurus) origin, originated in northern and northeastern Brazil. Y chromosome morphology, outer genital elements and other phenotypic characteristics were examined in 75 "pe-duro" bulls from the Empresa Brasileira de Pesquisa Agropecuaria (Embrapa) herd in the Brazilian State no Piaui. 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 "pe-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: |
Pe-duro; Raca Nativa. |
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Thesagro: |
Bovino; Cariótipo; Citogenética; Conservação. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01592naa a2200205 a 4500
001 1057521
005 2000-04-26
008 1999 bl --- 0-- u #d
100 1 $aBRITTO, C. M. C.
245 $aMorphological dimorphism in the y chromosome of "Pe-duro" cattle in the Brazilian State of Piaui.
260 $c1999
520 $a"Pe-duro" (hard foot) is a rare breed of beef cattle of European (Bos taurus) origin, originated in northern and northeastern Brazil. Y chromosome morphology, outer genital elements and other phenotypic characteristics were examined in 75 "pe-duro" bulls from the Empresa Brasileira de Pesquisa Agropecuaria (Embrapa) herd in the Brazilian State no Piaui. 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 "pe-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 $aBovino
650 $aCariótipo
650 $aCitogenética
650 $aConservação
653 $aPe-duro
653 $aRaca Nativa
700 1 $aMELLO, M. L. S.
773 $tGenetics and Molecular Biology, Ribeirao Preto$gv. 22, n. 3, p. 369-373, 1999.
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Embrapa Meio-Norte (CPAMN) |
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