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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
05/02/2014 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MONTEIRO, F. M.; MERCADANTE, M. E.; BARROS, C. M.; SATRAPA, R. A.; SILVA, J. A.; OLIVEIRA, L. Z.; SARAIVA, N. Z.; OLIVEIRA, C. S.; GARCIA, J. M. |
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Afiliação: |
F. M. MONTEIRO, APTA / UNESP; M. E. MERCADANTE, APTA; C. M. BARROS, UNESP; R. A. SATRAPA, UNESP; J. A. SILVA, UNESP; L. Z. OLIVEIRA, UNESP; N. Z. SARAIVA, UNESP; CLARA SLADE OLIVEIRA, CNPGL; J. M. GARCIA, UNESP. |
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Título: |
Reproductive tract development and puberty in two lines of Nellore heifers selected for postweaning weight. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Theriogenology, v. 80, n. 1, p. 10-17, 2013. |
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DOI: |
https://doi.org/10.1016/j.theriogenology.2013.02.013 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective was to evaluate reproductive tract development (ovary and uterus) and onset of puberty in two lines of Nellore heifers (Bos indicus) selected for postweaning weight. A total of 123 heifers, including 46 from the control Nellore line (NeC) and 77 from the selection Nellore line (NeS) were used. Every 18 to 21 days from 12 to 24 months of age, average ovarian area (OVA), endometrial thickness (ETh), and diameter of the largest follicle in each ovary were evaluated (using transrectal ultrasonography), and body weight, hip height, and body condition score were measured. There were no differences between NeS and NeC heifers for ETh or OVA (P < 0.05). Genetic selection for higher postweaning weight had no negative influence on the onset of puberty, with 52% and 48% of NeC and NeS heifers, respectively, pubertal at 24 months of age (P = 0.49). Heifers that reached puberty at the end of the study were heavier (NeC, 296.9 vs. 276.7 kg; NeS, 343.5 vs. 327.9 kg; P < 0.01) and younger (NeC, 23.4 vs. 24.2 mo; NeS, 22.7 vs. 24.0 months; P < 0.01) than those that did not. Furthermore, heifers that were heavier at weaning reached puberty earlier. Pubertal heifers had a greater OVA (4.15 vs. 3.14 cm(2); P < 0.01) and ETh (12.15 vs. 9.93 mm; P < 0.01) than nonpubertal heifers. Taken together, OVA and ETh had positive effects (P < 0.01) on the onset of puberty and were suitable indicator traits of heifer sexual precocity in pasture management systems. However, selection for weight did not alter ovarian or endometrial development, or manifestation of puberty at 24 months of age. Among the growth traits studied, weaning weight and weight at puberty had significant positive effects on manifestation of first estrus. MenosThe objective was to evaluate reproductive tract development (ovary and uterus) and onset of puberty in two lines of Nellore heifers (Bos indicus) selected for postweaning weight. A total of 123 heifers, including 46 from the control Nellore line (NeC) and 77 from the selection Nellore line (NeS) were used. Every 18 to 21 days from 12 to 24 months of age, average ovarian area (OVA), endometrial thickness (ETh), and diameter of the largest follicle in each ovary were evaluated (using transrectal ultrasonography), and body weight, hip height, and body condition score were measured. There were no differences between NeS and NeC heifers for ETh or OVA (P < 0.05). Genetic selection for higher postweaning weight had no negative influence on the onset of puberty, with 52% and 48% of NeC and NeS heifers, respectively, pubertal at 24 months of age (P = 0.49). Heifers that reached puberty at the end of the study were heavier (NeC, 296.9 vs. 276.7 kg; NeS, 343.5 vs. 327.9 kg; P < 0.01) and younger (NeC, 23.4 vs. 24.2 mo; NeS, 22.7 vs. 24.0 months; P < 0.01) than those that did not. Furthermore, heifers that were heavier at weaning reached puberty earlier. Pubertal heifers had a greater OVA (4.15 vs. 3.14 cm(2); P < 0.01) and ETh (12.15 vs. 9.93 mm; P < 0.01) than nonpubertal heifers. Taken together, OVA and ETh had positive effects (P < 0.01) on the onset of puberty and were suitable indicator traits of heifer sexual precocity in pasture management systems. However, selection for weigh... Mostrar Tudo |
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Palavras-Chave: |
Beef heifers; Endometrial thickness; Ovary; Ultrasound. |
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Thesagro: |
Bos Indicus. |
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Thesaurus Nal: |
puberty. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02639naa a2200301 a 4500
001 1978738
005 2024-02-06
008 2013 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.theriogenology.2013.02.013$2DOI
100 1 $aMONTEIRO, F. M.
245 $aReproductive tract development and puberty in two lines of Nellore heifers selected for postweaning weight.$h[electronic resource]
260 $c2013
520 $aThe objective was to evaluate reproductive tract development (ovary and uterus) and onset of puberty in two lines of Nellore heifers (Bos indicus) selected for postweaning weight. A total of 123 heifers, including 46 from the control Nellore line (NeC) and 77 from the selection Nellore line (NeS) were used. Every 18 to 21 days from 12 to 24 months of age, average ovarian area (OVA), endometrial thickness (ETh), and diameter of the largest follicle in each ovary were evaluated (using transrectal ultrasonography), and body weight, hip height, and body condition score were measured. There were no differences between NeS and NeC heifers for ETh or OVA (P < 0.05). Genetic selection for higher postweaning weight had no negative influence on the onset of puberty, with 52% and 48% of NeC and NeS heifers, respectively, pubertal at 24 months of age (P = 0.49). Heifers that reached puberty at the end of the study were heavier (NeC, 296.9 vs. 276.7 kg; NeS, 343.5 vs. 327.9 kg; P < 0.01) and younger (NeC, 23.4 vs. 24.2 mo; NeS, 22.7 vs. 24.0 months; P < 0.01) than those that did not. Furthermore, heifers that were heavier at weaning reached puberty earlier. Pubertal heifers had a greater OVA (4.15 vs. 3.14 cm(2); P < 0.01) and ETh (12.15 vs. 9.93 mm; P < 0.01) than nonpubertal heifers. Taken together, OVA and ETh had positive effects (P < 0.01) on the onset of puberty and were suitable indicator traits of heifer sexual precocity in pasture management systems. However, selection for weight did not alter ovarian or endometrial development, or manifestation of puberty at 24 months of age. Among the growth traits studied, weaning weight and weight at puberty had significant positive effects on manifestation of first estrus.
650 $apuberty
650 $aBos Indicus
653 $aBeef heifers
653 $aEndometrial thickness
653 $aOvary
653 $aUltrasound
700 1 $aMERCADANTE, M. E.
700 1 $aBARROS, C. M.
700 1 $aSATRAPA, R. A.
700 1 $aSILVA, J. A.
700 1 $aOLIVEIRA, L. Z.
700 1 $aSARAIVA, N. Z.
700 1 $aOLIVEIRA, C. S.
700 1 $aGARCIA, J. M.
773 $tTheriogenology$gv. 80, n. 1, p. 10-17, 2013.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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| Registros recuperados : 41 | |
| 11. |  | TEIXEIRA, F. F.; VASCONCELLOS, J. H.; COSTA, F. M. Melhoramento participativo e uso do Banco de Germoplasma do milho: palha para artesanato. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS; WORKSHOP EM BIOPROSPECÇÃO E CONSERVAÇÃO DE PLANTAS NATIVAS DO SEMI-ÁRIDO, 3.; WORKSHOP INTERNACIONAL SOBRE BIOENERGIA E MEIO AMBIENTE, 2010, Salvador. Banco de germoplasma: descobrir a riqueza, garantir o futuro: anais. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2010. 1 CD-ROM. (Embrapa Recursos Genéticos e Biotecnologia. Documentos, 304).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 12. | | TEIXEIRA, F. F.; VASCONCELLOS, J. H.; COELHO, R. S.; ARAÚJO, G. R. Banco Ativo de Germoplasma de milho: kit diversidade. Revista RG News, v. 4, n. 3, p. 198, 2018. Edição especial dos Anais do 5 Congresso Brasileiro de Recursos Genéticos, Fortaleza, nov. 2018.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 13. | | BRITO, S. M.; VASCONCELLOS, J. H.; PESSOA, M. T.; VIANA, G. F. Ações de comunicação em sistemas de integração lavoura-pecuária-floresta. In: ALVARENGA, R. C.; GONTIJO NETO, M. M.; SANTANA, D. P.; SILVEIRA, M. C. T. da; BORGHI, E. (ed.). Quinze anos de integração lavoura-pecuária e dez anos de integração lavoura-pecuária-floresta na Embrapa Milho e Sorgo. Brasília, DF: Embrapa, 2024. p. 315-333.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 14. | | ACOSTA, A.; VASCONCELLOS, J. H.; CRUZ, J. C.; MONTEIRO, M. A. R.; MENON, J. C. M. Resultados preliminares da campanha nacional de produção de sementes de milho em comunidades rurais na região Sul do Brasil. In: REUNIÃO TÉCNICA ANUAL DO MILHO, 45.; REUNIÃO TÉCNICA ANUAL DO SORGO, 28., 2000, Pelotas. Anais. Pelotas: Embrapa Clima Temperado, 2000. p. 775-780. (Embrapa Clima Temperado. Documentos,70).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 15. | | CARVALHO, D. de O.; CHAVES, F. F.; NOCE, M. A.; PESSOA, S. T.; VASCONCELLOS, J. H. Ações estratégicas de transferência de tecnologias para o aumento da produtividade de milho no Brasil. In: CONGRESSO NACIONAL DE MILHO E SORGO, 28.; SIMPÓSIO BRASILEIRO SOBRE A LAGARTA DO CARTUCHO, 4., 2010, Goiânia. Potencialidades, desafios e sustentabilidade: resumos expandidos... Sete Lagoas: ABMS, 2010. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 18. | | TEIXEIRA, F. F.; VASCONCELLOS, J. H.; ANDRADE, R. V.; NOVOTNY, E. H.; NETTO, D. A. M.; MONTEIRO, M. A. R. Avaliação de acessos de germoplasma de milho quanto a qualidade da palha para artesanato. In: CONGRESSO NACIONAL DE MILHO E SORGO, 25.; SIMPOSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 1., 2004, Cuiabá, MT. Da agricultura familiar ao agronegócio: tecnologia, competitividade e sustentabilidade: [resumos expandidos]. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Cuiabá: Empaer, 2004. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 19. | | TEIXEIRA, F. F.; VASCONCELLOS, J. H.; NETTO, D. A. M.; ANDRADE, R. V. de; SANTOS, M. X. dos; PADILHA, L. Mapeamento da distribuição geográfica do milho (Zea mays . L), com vistas à conservação das variedades crioulas. In: CORADIN, L. (Coord.). Parentes silvestres das espécies de plantas cultivadas. Brasília, DF: Ministério do Meio Ambiente, 2006.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 41 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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