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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
04/01/2010 |
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Data da última atualização: |
14/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MACHADO, R.; BERGAMASCHI, M. A. C. M.; BARBOSA, R. T.; OLIVEIRA, C. A. de; BINELLI, M. |
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Afiliação: |
RUI MACHADO, CPPSE; MARCO AURELIO C MEIRA BERGAMASCHI, CPPSE; ROGERIO TAVEIRA BARBOSA, CPPSE; C. A. DE OLIVEIRA, FMVZ-USP - SÃO PAULO; M. BINELLI, FMVZ - USP - SÃO PAULO. |
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Título: |
Ovarian function in Nelore (Bos taurus indicus) cows after post-ovulation hormonal treatments. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Theriogenology, v. 69, n. 7, p. 798-804, apr. 2008. |
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DOI: |
10.1016/j.theriogenology.2007.10.025 |
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Idioma: |
Inglês |
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Conteúdo: |
Maternal recognition of pregnancy in the cow requires successful signaling by the conceptus to block luteolysis. Conceptus growth and function depend on an optimal uterine environment, regulated by luteal progesterone. The objective of this study was to test strategies to optimize luteal function, as well as prevent a dominant follicle from initiating luteolysis. Nelore (Bos taurus indicus) beef cows (n = 40) were submitted to a GnRH/PGF2?/GnRH protocol. Cows that ovulated from a dominant ovarian follicle (ovulation = Day 0) were allocated to receive: no additional treatment (GC; n = 7); 3000 IU of hCG on Day 5 (GhCG; n = 5); 5 mg of estradiol-17? on Day 12 (GE2; n = 6); or 3000 IU of hCG on Day 5 and 5 mg of estradiol-17? on Day 12 (GhCG/E2; n = 5). Ultrasonographic imaging of the ovaries, assessment of plasma progesterone concentration, and detection of estrus were done daily from Day 5 to the day of subsequent ovulation. Treatment with hCG induced an accessory CL, increased CL volume, and plasma progesterone concentration throughout the luteal phase (P < 0.01). Estradiol-17? induced atresia and recruitment of a new wave of follicular growth; it eliminated a potentially estrogen-active, growing ovarian follicle within the critical period for maternal recognition of pregnancy, but it also hastened luteolysis (Days 16 or 17 vs. Days 18 or 19 in non-treated cows). In conclusion, the approaches tested enhanced luteal function (hCG) and altered ovarian follicular dynamics (estradiol-17?), but were unable to extend the life-span of the CL in Nelore cows. MenosMaternal recognition of pregnancy in the cow requires successful signaling by the conceptus to block luteolysis. Conceptus growth and function depend on an optimal uterine environment, regulated by luteal progesterone. The objective of this study was to test strategies to optimize luteal function, as well as prevent a dominant follicle from initiating luteolysis. Nelore (Bos taurus indicus) beef cows (n = 40) were submitted to a GnRH/PGF2?/GnRH protocol. Cows that ovulated from a dominant ovarian follicle (ovulation = Day 0) were allocated to receive: no additional treatment (GC; n = 7); 3000 IU of hCG on Day 5 (GhCG; n = 5); 5 mg of estradiol-17? on Day 12 (GE2; n = 6); or 3000 IU of hCG on Day 5 and 5 mg of estradiol-17? on Day 12 (GhCG/E2; n = 5). Ultrasonographic imaging of the ovaries, assessment of plasma progesterone concentration, and detection of estrus were done daily from Day 5 to the day of subsequent ovulation. Treatment with hCG induced an accessory CL, increased CL volume, and plasma progesterone concentration throughout the luteal phase (P < 0.01). Estradiol-17? induced atresia and recruitment of a new wave of follicular growth; it eliminated a potentially estrogen-active, growing ovarian follicle within the critical period for maternal recognition of pregnancy, but it also hastened luteolysis (Days 16 or 17 vs. Days 18 or 19 in non-treated cows). In conclusion, the approaches tested enhanced luteal function (hCG) and altered ovarian follicular dynamics (estr... Mostrar Tudo |
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Palavras-Chave: |
Antiluteolytic strategies; Ovary. |
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Thesagro: |
Estradiol. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02251naa a2200217 a 4500
001 1579307
005 2023-03-14
008 2008 bl uuuu u00u1 u #d
024 7 $a10.1016/j.theriogenology.2007.10.025$2DOI
100 1 $aMACHADO, R.
245 $aOvarian function in Nelore (Bos taurus indicus) cows after post-ovulation hormonal treatments.$h[electronic resource]
260 $c2008
520 $aMaternal recognition of pregnancy in the cow requires successful signaling by the conceptus to block luteolysis. Conceptus growth and function depend on an optimal uterine environment, regulated by luteal progesterone. The objective of this study was to test strategies to optimize luteal function, as well as prevent a dominant follicle from initiating luteolysis. Nelore (Bos taurus indicus) beef cows (n = 40) were submitted to a GnRH/PGF2?/GnRH protocol. Cows that ovulated from a dominant ovarian follicle (ovulation = Day 0) were allocated to receive: no additional treatment (GC; n = 7); 3000 IU of hCG on Day 5 (GhCG; n = 5); 5 mg of estradiol-17? on Day 12 (GE2; n = 6); or 3000 IU of hCG on Day 5 and 5 mg of estradiol-17? on Day 12 (GhCG/E2; n = 5). Ultrasonographic imaging of the ovaries, assessment of plasma progesterone concentration, and detection of estrus were done daily from Day 5 to the day of subsequent ovulation. Treatment with hCG induced an accessory CL, increased CL volume, and plasma progesterone concentration throughout the luteal phase (P < 0.01). Estradiol-17? induced atresia and recruitment of a new wave of follicular growth; it eliminated a potentially estrogen-active, growing ovarian follicle within the critical period for maternal recognition of pregnancy, but it also hastened luteolysis (Days 16 or 17 vs. Days 18 or 19 in non-treated cows). In conclusion, the approaches tested enhanced luteal function (hCG) and altered ovarian follicular dynamics (estradiol-17?), but were unable to extend the life-span of the CL in Nelore cows.
650 $aEstradiol
653 $aAntiluteolytic strategies
653 $aOvary
700 1 $aBERGAMASCHI, M. A. C. M.
700 1 $aBARBOSA, R. T.
700 1 $aOLIVEIRA, C. A. de
700 1 $aBINELLI, M.
773 $tTheriogenology$gv. 69, n. 7, p. 798-804, apr. 2008.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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Classificação |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Gado de Corte; Embrapa Pantanal. |
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Data corrente: |
24/11/2016 |
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Data da última atualização: |
19/03/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
DIAS, F. R. T.; MATSUURA, M. I. da S. F.; BARIONI, L. G.; FASIABEN, M. do C. R.; MOREIRA, J. M. M. A. P.; SENA, A. L. dos S.; SANTOS, J. C. dos; COSTA, F. P.; LAMPERT, V. do N.; OLIVEIRA, P. P. A.; PEDROSO, A. de F. |
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Afiliação: |
FERNANDO RODRIGUES TEIXEIRA DIAS, CPAP; MARILIA IEDA DA S F MATSUURA, CNPMA; LUIS GUSTAVO BARIONI, CNPTIA; MARIA DO CARMO RAMOS FASIABEN, CNPTIA; JOSE MAURO M AVILA PAZ MOREIRA, CNPF; ANA LAURA DOS SANTOS SENA, CPATU; JAIR CARVALHO DOS SANTOS, CPATU; FERNANDO PAIM COSTA, CNPGC; VINICIUS DO NASCIMENTO LAMPERT, CPPSUL; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; ANDRE DE FARIA PEDROSO, CPPSE. |
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Título: |
Beef cattle CO2-e emission intensity as a product of performance ratios. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON GREENHOUSE GASES IN AGRICULTURE, 2., 2016, Campo Grande, MS. Proceedings... Brasília, DF: Embrapa, 2016. |
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Páginas: |
p. 37-41 |
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Série: |
(Embrapa Gado de Corte. Documentos, 216). |
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Idioma: |
Inglês |
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Conteúdo: |
Embrapa?s PECUS project aims to estimate greenhouse gas emissions (GGE) and recommend technological solutions for reducing CO2-e emission intensity from beef cattle production systems. PECUS project identified 23 typical production systems that represent most of the Brazilian beef cattle production and defined mathematical models for their technical and economic performance and CO2-e emission intensity. Choosing the right performance indexes can help to compare different production systems and identify opportunities for improvement. This work describes a way of splitting emission intensity from enteric fermentation and manure decomposition of a beef cattle production system as a product of performance ratios inspired by Du- Pont identity used for financial performance analysis (MATT, 2016). Selected production systems identified by the PECUS project were compared through these performance ratios in order to evaluate if they can help on identifying opportunities for the reduction of CO2-e emission intensity. |
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Palavras-Chave: |
Emissão de gases. |
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Thesagro: |
Bovino; Carbono; Gado de corte. |
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Thesaurus NAL: |
Beef cattle; Carbon dioxide; Carbon markets. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/157663/1/Beef-Cattle-CO2.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/150885/1/dias-co2.pdf
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Marc: |
LEADER 02091nam a2200337 a 4500
001 2060149
005 2019-03-19
008 2016 bl uuuu u00u1 u #d
100 1 $aDIAS, F. R. T.
245 $aBeef cattle CO2-e emission intensity as a product of performance ratios.$h[electronic resource]
260 $aIn: INTERNATIONAL SYMPOSIUM ON GREENHOUSE GASES IN AGRICULTURE, 2., 2016, Campo Grande, MS. Proceedings... Brasília, DF: Embrapa$c2016
300 $ap. 37-41
490 $a(Embrapa Gado de Corte. Documentos, 216).
520 $aEmbrapa?s PECUS project aims to estimate greenhouse gas emissions (GGE) and recommend technological solutions for reducing CO2-e emission intensity from beef cattle production systems. PECUS project identified 23 typical production systems that represent most of the Brazilian beef cattle production and defined mathematical models for their technical and economic performance and CO2-e emission intensity. Choosing the right performance indexes can help to compare different production systems and identify opportunities for improvement. This work describes a way of splitting emission intensity from enteric fermentation and manure decomposition of a beef cattle production system as a product of performance ratios inspired by Du- Pont identity used for financial performance analysis (MATT, 2016). Selected production systems identified by the PECUS project were compared through these performance ratios in order to evaluate if they can help on identifying opportunities for the reduction of CO2-e emission intensity.
650 $aBeef cattle
650 $aCarbon dioxide
650 $aCarbon markets
650 $aBovino
650 $aCarbono
650 $aGado de corte
653 $aEmissão de gases
700 1 $aMATSUURA, M. I. da S. F.
700 1 $aBARIONI, L. G.
700 1 $aFASIABEN, M. do C. R.
700 1 $aMOREIRA, J. M. M. A. P.
700 1 $aSENA, A. L. dos S.
700 1 $aSANTOS, J. C. dos
700 1 $aCOSTA, F. P.
700 1 $aLAMPERT, V. do N.
700 1 $aOLIVEIRA, P. P. A.
700 1 $aPEDROSO, A. de F.
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Embrapa Gado de Corte (CNPGC) |
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