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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
28/09/2011 |
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Data da última atualização: |
27/06/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TEIXEIRA, H. C. A.; NASCIMENTO, N. V. do; McMANUS, C.; EGITO, A. A. do; MARIANTE, A. da S.; RAMOS, A. F. |
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Afiliação: |
HEITOR CASTRO ALVES TEIXEIRA, UNB; NORMANDES VIEIRA DO NASCIMENTO, CENARGEN; C. MCMANUS, UNIVERSITY OF BRASÍLIA; ANDREA ALVES DO EGITO, CNPGC; ARTHUR DA SILVA MARIANTE, CENARGEN; ALEXANDRE FLORIANI RAMOS, CENARGEN. |
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Título: |
Seasonal influence on semen traits and freezability from locally adapted Curraleiro bulls. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Animal Reproduction Science, v.125, p. 56-61, May 2011. Issues 1-4. |
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Idioma: |
Inglês |
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Conteúdo: |
Studies were conducted to characterize the effect of season of the year on testicular morphology, fresh and frozen/thawed semen quality from Curraleiro (Pé-duro) bulls in the Brazilian Central west region. Five adult, healthy bulls underwent an andrological examination and semen collection using an electroejaculator, once a month for a year. Fresh and thawed semen were evaluated for progressive sperm motility and sperm vigor, sperm morphology and acrosomal integrity. Testicular length and volume were less (P < 0.05) in April than in the other months of the year. For fresh semen, the ejaculate in April had less volume and sperm concentration (P < 0.05), while sperm vigor was less (P < 0.05) in June, increasing in January and February. With the frozen/thawed semen, the proportion of sperm was greater (P < 0.05) in April to July, decreasing from October to December. Semen collected in December had the greatest (P < 0.05) proportion of major defects while that collected in February/March had the highest proportion of minor defects. The proportion of live intact sperm reduced progressively from December to April/May. The marginal influence of the time of the year on testicular biometry and fresh semen in Curraleiro bulls shows the adaptation of this breed to the environmental conditions in the region. Thus, reproduction with natural mating should be successful at any time of year. For frozen semen collection for conservation programs, the best time of year is from June to September. MenosStudies were conducted to characterize the effect of season of the year on testicular morphology, fresh and frozen/thawed semen quality from Curraleiro (Pé-duro) bulls in the Brazilian Central west region. Five adult, healthy bulls underwent an andrological examination and semen collection using an electroejaculator, once a month for a year. Fresh and thawed semen were evaluated for progressive sperm motility and sperm vigor, sperm morphology and acrosomal integrity. Testicular length and volume were less (P < 0.05) in April than in the other months of the year. For fresh semen, the ejaculate in April had less volume and sperm concentration (P < 0.05), while sperm vigor was less (P < 0.05) in June, increasing in January and February. With the frozen/thawed semen, the proportion of sperm was greater (P < 0.05) in April to July, decreasing from October to December. Semen collected in December had the greatest (P < 0.05) proportion of major defects while that collected in February/March had the highest proportion of minor defects. The proportion of live intact sperm reduced progressively from December to April/May. The marginal influence of the time of the year on testicular biometry and fresh semen in Curraleiro bulls shows the adaptation of this breed to the environmental conditions in the region. Thus, reproduction with natural mating should be successful at any time of year. For frozen semen collection for conservation programs, the best time of year is from June to Septemb... Mostrar Tudo |
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Palavras-Chave: |
Curraleiro. |
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Thesagro: |
Recurso Genético; Reprodução Animal; Touro. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02202naa a2200229 a 4500
001 1901882
005 2024-06-27
008 2011 bl uuuu u00u1 u #d
100 1 $aTEIXEIRA, H. C. A.
245 $aSeasonal influence on semen traits and freezability from locally adapted Curraleiro bulls.$h[electronic resource]
260 $c2011
520 $aStudies were conducted to characterize the effect of season of the year on testicular morphology, fresh and frozen/thawed semen quality from Curraleiro (Pé-duro) bulls in the Brazilian Central west region. Five adult, healthy bulls underwent an andrological examination and semen collection using an electroejaculator, once a month for a year. Fresh and thawed semen were evaluated for progressive sperm motility and sperm vigor, sperm morphology and acrosomal integrity. Testicular length and volume were less (P < 0.05) in April than in the other months of the year. For fresh semen, the ejaculate in April had less volume and sperm concentration (P < 0.05), while sperm vigor was less (P < 0.05) in June, increasing in January and February. With the frozen/thawed semen, the proportion of sperm was greater (P < 0.05) in April to July, decreasing from October to December. Semen collected in December had the greatest (P < 0.05) proportion of major defects while that collected in February/March had the highest proportion of minor defects. The proportion of live intact sperm reduced progressively from December to April/May. The marginal influence of the time of the year on testicular biometry and fresh semen in Curraleiro bulls shows the adaptation of this breed to the environmental conditions in the region. Thus, reproduction with natural mating should be successful at any time of year. For frozen semen collection for conservation programs, the best time of year is from June to September.
650 $aRecurso Genético
650 $aReprodução Animal
650 $aTouro
653 $aCurraleiro
700 1 $aNASCIMENTO, N. V. do
700 1 $aMcMANUS, C.
700 1 $aEGITO, A. A. do
700 1 $aMARIANTE, A. da S.
700 1 $aRAMOS, A. F.
773 $tAnimal Reproduction Science$gv.125, p. 56-61, May 2011. Issues 1-4.
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| 3. |  | RIBEIRO, K. de O.; DUARTE, J. B.; OLIVEIRA, J. P.; MONTEIRO, P. M. F. de O. Caracterização genética de acessos do banco de germoplasma de soja da Agência Rural - Goiás com ênfase em atributos físico-químicos do grão. In: CONGRESSO DE PESQUISA, ENSINO E EXTENSÃO, 4., 2007, Goiânia. Ciência, educação e compromisso social: anais... Goiânia: Universidade Federal de Goiás, 2007.| Tipo: Resumo em Anais de Congresso |
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| 6. | | JUNIOR, J. N.; FARIA, L. C. COSTA, J. L. S.; MONTEIRO, P. M. F. O. Levantamento da ocorrencia de doencas em soja no estado de Goias, na safra 1999/00. In: REUNIAO DE PESQUISA DE SOJA DA REGIAO CENTRAL DO BRASIL, 22., 2000, Cuiaba. Resumos... Londrina: Embrapa Soja, 2000. p.73. (Embrapa Soja. Documentos, 144).| Biblioteca(s): Embrapa Soja. |
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| 8. | | ARANTES, N. E.; SEDIYMA, T.; MONTEIRO, P. M. F. O.; COSTA, A. V. Estudos de alternativas de selecao de variedades de soja (Glycine max (L.) Merrill), em Goiania, GO. In: SEMINARIO NACIONAL DE PESQUISA DE SOJA, 2., 1981, Brasilia. Anais... Londrina : EMBRAPA-CNPSo, 1982. v.2 p.415-425. (EMBRAPA-CNPSo. Documentos, 1).| Biblioteca(s): Embrapa Soja. |
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| 13. | | EICHLER, V.; ROLIM, R. B.; MONTEIRO, P. M. F. O.; ASSUNCAO, M. S.; SPEHAR, C. R.; GUIMARAES, L. B. Avaliacao de cultivares e linhagens de soja para o estado de Goias e Distrito Federal: safra 1995/96. In: REUNIAO DE PESQUISA DE SOJA DA REGIAO CENTRAL DO BRASIL, 18., 1996, Uberlandia. Ata e resumos. Uberlandia: UFU; [Londrina]: Embrapa-CNPSo, 1996. p.350-351.| Biblioteca(s): Embrapa Cerrados. |
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| 14. | | NUNES JUNIOR, J.; SILVA, L. O.; GUIMARAES, L. B.; FARIA, L. C.; MONTEIRO, P. M. F. O. Avaliacao de onze cultivares de soja em quatro epocas de semeadura e em tres densidades de plantio. In: REUNIAO DE PESQUISA DE SOJA DA REGIAO CENTRAL DO BRASIL, 22., 2000, Cuiaba. Resumos... Londrina: Embrapa Soja, 2000. p.117. (Embrapa Soja. Documentos, 144).| Biblioteca(s): Embrapa Soja. |
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| 18. | | ARANTES, N. E.; ZITO, R. K.; SOUZA, P. I. M.; MONTEIRO, P. M. F. O.; NUNES JÚNIOR, J. Cultivar de soja BRSMG 250 'Nobreza': comportamento em São Paulo, Goiás, Distrito Federal, Mato Grosso e Bahia. In: REUNIÃO DE PESQUISA DE SOJA NA REGIÃO CENTRAL DO BRASIL, 26., 2004, Ribeirão Preto. Resumos... Londrina: Embrapa Soja: Fundação Meridional, 2004. p. 48. (Embrapa Soja. Documentos, 234). Organizado por Odilon Ferreira Saraiva, Janete Lasso Ortiz, Regina Maria Villas Boas de Campos Leite.| Biblioteca(s): Embrapa Soja. |
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