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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
24/10/2014 |
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Data da última atualização: |
27/10/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, M. E. F.; FELICIANO, M. A. R.; D'AMATO, C. C.; OLIVEIRA, L. G.; BICUDO, S. D.; FONSECA, J. F. da; VICENTE, W. R. R.; VISCO, E.; BARTLEWSKID, P. M. |
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Afiliação: |
Maria E. F. Oliveira, São Paulo State University (USP) - Jaboticabal, SP, Brazil; Marcus A. R. Feliciano, USP - Jaboticabal, SP, Brazil; Carla C. D'Amato, USP - Jaboticabal, SP, Brazil; Luís G. Oliveira, USP - Jaboticabal, SP, Brazil; Sony D. Bicudo, Paulo State University (USP) - Botucatu, SP, Brazil; Jeferson Ferreira da Fonseca, CNPC; Wilter R. R. Vicente, USP - Jaboticabal, SP, Brazil; Elise Visco, University of Guelph, Guelph, Canada; Pawel M. Bartlewskid, University of Guelph, Guelph, Canada. |
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Título: |
Correlations between ovarian follicular blood flow and superovulatory responses in ewes. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Animal Reproduction Science, Champaign, v. 144, n. 1/2, p. 30-37, Jan. 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The primary goal of this study was to employ ultrasonography to examine the ovaries of ewes undergoing superovulatory treatment for correlations between antral follicular blood flow and ovarian responses/embryo yields. Five Santa Inês ewes were subjected to a short- (Days 0?6, Group 1) and five to a long-term progesterone-based protocol (Days 0?12, Group 2) to synchronize estrus and ovulations after the superovulatory treatment. Porcine FSH (pFSH, 200 mg) was administered in 8 decreasing doses over 4 days, starting on Days 4 and 10 in Groups 1 and 2, respectively. After CIDR removal, all ewes were bred by a ram and embryos were recovered surgically 7 days later. Transrectal ovarian ultrasonography was performed the day before and on all 4 days of the superovulatory treatment. Both an arbitrary-scale [(0) non-detectable; (1) small; (2) moderate; (3) intense blood flow] and quantitative analysis of the blood flow area were used to assess the follicular blood flow in color Doppler images. There were no significant correlations between the arbitrary blood flow scores and superovulatory responses in the ewes of the present study. However, there was a positive correlation between the quantitative estimates of follicular blood flow on the final day of the superovulatory treatment, and the number (DA: r = 0.68, P < 0.05; DA/TA × 100%: r = 0.85, P < 0.05) and percentage (DA: r = 0.65, P < 0.05; DA/TA × 100%: r = 0.91, P < 0.001) of unfertilized eggs (DA: Doppler area, TA: total area of the largest ovarian cross section). This experiment presents a commercially practical tool for predicting superovulatory outcomes in ewes and evidence for the existence of follicular blood flow threshold that may impinge negatively on oocyte quality when surpassed during hormonal ovarian superstimulation. MenosAbstract: The primary goal of this study was to employ ultrasonography to examine the ovaries of ewes undergoing superovulatory treatment for correlations between antral follicular blood flow and ovarian responses/embryo yields. Five Santa Inês ewes were subjected to a short- (Days 0?6, Group 1) and five to a long-term progesterone-based protocol (Days 0?12, Group 2) to synchronize estrus and ovulations after the superovulatory treatment. Porcine FSH (pFSH, 200 mg) was administered in 8 decreasing doses over 4 days, starting on Days 4 and 10 in Groups 1 and 2, respectively. After CIDR removal, all ewes were bred by a ram and embryos were recovered surgically 7 days later. Transrectal ovarian ultrasonography was performed the day before and on all 4 days of the superovulatory treatment. Both an arbitrary-scale [(0) non-detectable; (1) small; (2) moderate; (3) intense blood flow] and quantitative analysis of the blood flow area were used to assess the follicular blood flow in color Doppler images. There were no significant correlations between the arbitrary blood flow scores and superovulatory responses in the ewes of the present study. However, there was a positive correlation between the quantitative estimates of follicular blood flow on the final day of the superovulatory treatment, and the number (DA: r = 0.68, P < 0.05; DA/TA × 100%: r = 0.85, P < 0.05) and percentage (DA: r = 0.65, P < 0.05; DA/TA × 100%: r = 0.91, P < 0.001) of unfertilized eggs (DA: Doppler area, TA: t... Mostrar Tudo |
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Palavras-Chave: |
Antral follicles; Color Doppler sonography. |
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Thesagro: |
Ovário; Ovelha; Ovino; Reprodução animal; Superovulação. |
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Thesaurus Nal: |
Blood circulation; Ewes; Reproduction; Sheep; Superovulation. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/110557/1/ap-Correlations.pdf
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Marc: |
LEADER 02851naa a2200361 a 4500
001 1998372
005 2014-10-27
008 2014 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, M. E. F.
245 $aCorrelations between ovarian follicular blood flow and superovulatory responses in ewes.$h[electronic resource]
260 $c2014
520 $aAbstract: The primary goal of this study was to employ ultrasonography to examine the ovaries of ewes undergoing superovulatory treatment for correlations between antral follicular blood flow and ovarian responses/embryo yields. Five Santa Inês ewes were subjected to a short- (Days 0?6, Group 1) and five to a long-term progesterone-based protocol (Days 0?12, Group 2) to synchronize estrus and ovulations after the superovulatory treatment. Porcine FSH (pFSH, 200 mg) was administered in 8 decreasing doses over 4 days, starting on Days 4 and 10 in Groups 1 and 2, respectively. After CIDR removal, all ewes were bred by a ram and embryos were recovered surgically 7 days later. Transrectal ovarian ultrasonography was performed the day before and on all 4 days of the superovulatory treatment. Both an arbitrary-scale [(0) non-detectable; (1) small; (2) moderate; (3) intense blood flow] and quantitative analysis of the blood flow area were used to assess the follicular blood flow in color Doppler images. There were no significant correlations between the arbitrary blood flow scores and superovulatory responses in the ewes of the present study. However, there was a positive correlation between the quantitative estimates of follicular blood flow on the final day of the superovulatory treatment, and the number (DA: r = 0.68, P < 0.05; DA/TA × 100%: r = 0.85, P < 0.05) and percentage (DA: r = 0.65, P < 0.05; DA/TA × 100%: r = 0.91, P < 0.001) of unfertilized eggs (DA: Doppler area, TA: total area of the largest ovarian cross section). This experiment presents a commercially practical tool for predicting superovulatory outcomes in ewes and evidence for the existence of follicular blood flow threshold that may impinge negatively on oocyte quality when surpassed during hormonal ovarian superstimulation.
650 $aBlood circulation
650 $aEwes
650 $aReproduction
650 $aSheep
650 $aSuperovulation
650 $aOvário
650 $aOvelha
650 $aOvino
650 $aReprodução animal
650 $aSuperovulação
653 $aAntral follicles
653 $aColor Doppler sonography
700 1 $aFELICIANO, M. A. R.
700 1 $aD'AMATO, C. C.
700 1 $aOLIVEIRA, L. G.
700 1 $aBICUDO, S. D.
700 1 $aFONSECA, J. F. da
700 1 $aVICENTE, W. R. R.
700 1 $aVISCO, E.
700 1 $aBARTLEWSKID, P. M.
773 $tAnimal Reproduction Science, Champaign$gv. 144, n. 1/2, p. 30-37, Jan. 2014.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte; Embrapa Pantanal; Embrapa Unidades Centrais. |
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Data corrente: |
21/06/2006 |
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Data da última atualização: |
21/07/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
SANTOS, S. A.; TAKAHASHI, F.; CARDOSO, E. L.; FLORES, C. P.; OLIVEIRA, L. O. F. de; SOUZA, G. da S. e; GOMES, E. G.; ORTEGA, E. |
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Afiliação: |
SANDRA APARECIDA SANTOS, CPAP; FÁBIO TAKAHASHI, Universidade de Viçosa, Florestal, MG; EVALDO LUIS CARDOSO, CPAP; CLAUDIO PEREIRA FLORES, CPAP; LUIZ ORCIRIO FIALHO DE OLIVEIRA, CNPGC; GERALDO DA SILVA E SOUZA, SIRE; ELIANE GONCALVES GOMES, SIRE; ENRIQUE ORTEGA, Universidade de Campinas, Barão Geraldo, SP. |
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Título: |
An emergy-based approach to assess and valuate ecosystem services of tropical wetland pastures in Brazil. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Open Journal of Ecology, v. 10, n. 5, p. 303-319, 2020. |
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ISBN: |
ISSN Online: 2162-1993 |
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Idioma: |
Inglês |
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Conteúdo: |
Wetland grasslands are important ecosystems for raising beef cattle, because they are highly productive and present forages with high quality. Most of these ecosystems are threatened by overgrazing or by being replaced by exotic pastures. Emergy synthesis approach was used to assess and value the services provided by native pastures wetland under three conservation status and also to compare them to exotic pastures on wetlands. The ecosystem service that was assessed included forage provision for calves production estimated from grazing capacity of cow with calf at the foot. Habitat maintenance to plant diversity and wild herbivores were also evaluated. The results showed that natural wetland pastures with better conservation status provided valuable ecosystem services and are highly renewable. Data envelopment analysis (DEA) showed that regardless of the conservation state of the natural pastures, wet native grasslands were more efficient than wet exotic grasslands. Replacing native pastures by exotic ones may reduce plant diversity and the renewability of the system. The proposed method has a holistic approach to pasture ecosystems and is able to help decision-makers to define sustainable management practices and to subsidise public policies when it comes to payments regarding ecosystem services. |
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Thesagro: |
Ecossistema; Pastagem Nativa. |
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Thesaurus NAL: |
Ecosystem services; Pasture management. |
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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/213494/1/Emergy-Based-Approach-Assess-2020.pdf
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Marc: |
LEADER 02075naa a2200253 a 4500
001 1812144
005 2020-07-21
008 2020 bl uuuu u00u1 u #d
100 1 $aSANTOS, S. A.
245 $aAn emergy-based approach to assess and valuate ecosystem services of tropical wetland pastures in Brazil.$h[electronic resource]
260 $c2020
520 $aWetland grasslands are important ecosystems for raising beef cattle, because they are highly productive and present forages with high quality. Most of these ecosystems are threatened by overgrazing or by being replaced by exotic pastures. Emergy synthesis approach was used to assess and value the services provided by native pastures wetland under three conservation status and also to compare them to exotic pastures on wetlands. The ecosystem service that was assessed included forage provision for calves production estimated from grazing capacity of cow with calf at the foot. Habitat maintenance to plant diversity and wild herbivores were also evaluated. The results showed that natural wetland pastures with better conservation status provided valuable ecosystem services and are highly renewable. Data envelopment analysis (DEA) showed that regardless of the conservation state of the natural pastures, wet native grasslands were more efficient than wet exotic grasslands. Replacing native pastures by exotic ones may reduce plant diversity and the renewability of the system. The proposed method has a holistic approach to pasture ecosystems and is able to help decision-makers to define sustainable management practices and to subsidise public policies when it comes to payments regarding ecosystem services.
650 $aEcosystem services
650 $aPasture management
650 $aEcossistema
650 $aPastagem Nativa
700 1 $aTAKAHASHI, F.
700 1 $aCARDOSO, E. L.
700 1 $aFLORES, C. P.
700 1 $aOLIVEIRA, L. O. F. de
700 1 $aSOUZA, G. da S. e
700 1 $aGOMES, E. G.
700 1 $aORTEGA, E.
773 $tOpen Journal of Ecology$gv. 10, n. 5, p. 303-319, 2020.
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Registro original: |
Embrapa Pantanal (CPAP) |
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