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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 : 13 | |
| 5. |  | FARIA, M. A. de; MELLO, M. V.; CHIARI, L.; JANK, L.; ZORZATTO, C.; LEGUIZAMONN, G. O. C. Identificação de acessos de Panicum maximum utilizando marcadores RAPD. In: JORNADA CIENTÍFICA DA EMBRAPA GADO DE CORTE, 2., 2006, Campo Grande, MS. Anais [da]... 2. ed. Campo Grande, MS: Embrapa Gado de Corte, 2006. 1 p. 1 CD-ROM. CNPGC.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 6. | | SANT'ANA, J. A do V.; COELHO, E. F.; FARIA, M. A. de; COELHO FILHO, M. A.; SANTOS, C. da C. Distribuição de raizes de bananeira na fase de floração sob diferentes sistema de irrigação no Semi-Àrido da Bahia. In: CONGRESSO BRASILEIRO DE ENGENHARIA AGRÍCOLA, 29.; CONGRESSO LATINOAMERICANO Y DEL CARIBE DE INGENIERÍA AGRÍCOLA, 9, 2010, Vitória. A engenharia agrícola e o desenvolvimento das pequenas propriedades rurais: anais. Vitória: CONBEA, 2010. 1 CD-ROM. PDF. 0787-1.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 7. | | SANT'ANA, J. A. do V.; COELHO, E. F.; FARIA, M. A. de; SILVA, E. L. da; DONATO, S. L. R. Distribuição de raízes de bananeira Prata-Anã no segundo ciclo de produção sob três sistemas de irrigação. Revista Brasileira de Fruticultura, Jaboticabal - SP, v. 34, n. 1, p. 124-133, Março, 2012. p. 124 -133.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 10. | | SANT'ANA, J. A. do V.; COELHO, E. F.; CONCEIÇÃO, B. S.; SANTOS, C. da C.; FARIA, M. A. de; COTRIM, C. E. Sistema radicular de bananeira irrigada por aspersão convencional em duas fases fenológicas. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 21., 2010, Natal. Frutas: saúde, inovação e responsabilidade: anais. Natal: Sociedade Brasileira de Fruticultura, 2010. pdf 2071| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 11. | | SANT'ANA, J. A. do V.; COELHO, E. F.; FARIA, M. A. de; SANTOS, C. da C.; CONCEIÇÃO, B. S.; DONATO, S. R. Distribuição espacial de raízes de bananeira sob irrigação localizada no semi-árido da Bahia. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 21., 2010, Natal. Frutas: saúde, inovação e responsabilidade: anais. Natal: Sociedade Brasileira de Fruticultura, 2010. pdf 2072| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 12. | | OLIVEIRA, E. L. de; ANDRADE, L. A. de B.; FARIA, M. A. de; EVANGELISTA, A. W. P.; MORAIS, A. R. de. Uso de vinhaça de alambique e nitrogênio em cana-de-açúcar irrigada e não irrigada. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 11, p. 1398-1403, nov. 2009. Título em inglês: Use of pot still vinasse and nitrogen in irrigated and unirrigated sugar cane.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 13. | | ZORZATTO, C.; CHIARI, L.; VALLE, C. B. do; MELLO, M. V. de; FARIA, M. A. de; ROCHA, M. da; LEGUIZÁMON, G. O. C. Variabilidade genética de acessos de Brachiaria dictyoneura utilizando RAPD. In: JORNADA CIENTÍFICA DA EMBRAPA GADO DE CORTE, 2., 2006, Campo Grande, MS. Anais [da]... 2. ed. Campo Grande, MS: Embrapa Gado de Corte, 2006. 1 p. 1 CD-ROM. CNPGC.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 13 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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