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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
05/01/2008 |
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Data da última atualização: |
25/09/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SOUZA, J. M. G.; GOMES, L. M.; MONTEIRO JÚNIOR, P. L. J.; BRUSCHI, J. H.; VIANA, J. H. M.; CAMARGO, L. S. A.; FONSECA, J. F. da. |
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Afiliação: |
J. M. G. Souza; L. M. Gomes, Embrapa Gado de Leite (CNPGL); Monteiro Júnior P. L. J., Embrapa Gado de Leite (CNPGL); J. H. Bruschi, Embrapa Gado de Leite (CNPGL); Embrapa Gado de Leite (CNPGL); Embrapa Gado de Leite (CNPGL); JEFERSON FERREIRA DA FONSECA, CNPC. |
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Título: |
Uso de protocolos curtos para indução de estro em ovelhas Santa Inês. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE REPRODUÇÃO ANIMAL, 17., 2007, Curitiba. Resumos...Belo Horizonte: CBRA, 2007. p. 215. |
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Idioma: |
Português |
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Conteúdo: |
A ovinocultura tem crescido substancialmente nos últimos anos. As ovelhas são poliéstricas estacionais de dias curtos, ou seja, dependendo da latitude, obtém-se apenas um parto por ano. Assim, existem algumas técnicas que estão sendo implementadas para otimizar a eficiência reprodutiva nesses animais. A progesterona e progestágenos são os fármacos mais empregados nos programas de sincronização do estro ovino e, na maioria das vezes, associados ao eCG (Gordon, 1997). Este estudo comparou a eficácia de dois protocolos de indução de estro em ovelhas com o objetivo de serem implementados em programas de inseminação artificial em tempo fixo (IATF) em ovinos. [Use of short-term protocols to estrous induction in Santa Inês ewes]. |
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Palavras-Chave: |
Brasil; Estro; Estrous induction; Minas Gerais. |
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Thesagro: |
Indução; Ovelha; Ovino; Prenhez; Reprodução Animal. |
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Thesaurus Nal: |
Animal reproduction; Brazil; Estrous cycle; Ewes; Pregnancy; Sheep. |
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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/52275/1/RAC-Uso-de-protocolos.pdf
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Marc: |
LEADER 01771nam a2200361 a 4500
001 1533666
005 2019-09-25
008 2007 bl uuuu u00u1 u #d
100 1 $aSOUZA, J. M. G.
245 $aUso de protocolos curtos para indução de estro em ovelhas Santa Inês.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE REPRODUÇÃO ANIMAL, 17., 2007, Curitiba. Resumos...Belo Horizonte: CBRA, 2007. p. 215.$c2007
520 $aA ovinocultura tem crescido substancialmente nos últimos anos. As ovelhas são poliéstricas estacionais de dias curtos, ou seja, dependendo da latitude, obtém-se apenas um parto por ano. Assim, existem algumas técnicas que estão sendo implementadas para otimizar a eficiência reprodutiva nesses animais. A progesterona e progestágenos são os fármacos mais empregados nos programas de sincronização do estro ovino e, na maioria das vezes, associados ao eCG (Gordon, 1997). Este estudo comparou a eficácia de dois protocolos de indução de estro em ovelhas com o objetivo de serem implementados em programas de inseminação artificial em tempo fixo (IATF) em ovinos. [Use of short-term protocols to estrous induction in Santa Inês ewes].
650 $aAnimal reproduction
650 $aBrazil
650 $aEstrous cycle
650 $aEwes
650 $aPregnancy
650 $aSheep
650 $aIndução
650 $aOvelha
650 $aOvino
650 $aPrenhez
650 $aReprodução Animal
653 $aBrasil
653 $aEstro
653 $aEstrous induction
653 $aMinas Gerais
700 1 $aGOMES, L. M.
700 1 $aMONTEIRO JÚNIOR, P. L. J.
700 1 $aBRUSCHI, J. H.
700 1 $aVIANA, J. H. M.
700 1 $aCAMARGO, L. S. A.
700 1 $aFONSECA, J. F. da
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
06/02/2017 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 3 |
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Autoria: |
GHETTI, A. M.; SIQUEIRA, L. G. B.; ARASHIRO, E. K. N.; PALHÃO, M. P.; BRANDÃO, F. Z.; VIANA, J. H. M. |
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Afiliação: |
Alberto Mansur Ghetti, UFF; LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL; Eduardo Kenji Nunes Arashiro, UFMG; Miller Pereira Palhao, Universidade Jose do Rosario Vellano, Alfenas, MG; Felipe Zandonadi Brandao, UFF; JOAO HENRIQUE MOREIRA VIANA, Cenargen. |
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Título: |
Characterization of blood flow and the effects of exogenous estradiol benzoate on residual follicles formed after ultrasound-guided transvaginal follicle aspiration in cattle. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of Animal Science and Biotechnology, v. 7, article 59, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract Background: Removal of the follicular content by ultrasound-guided transvaginal follicle aspiration (TVFA) may fail to induce immediate atresia and loss of function, resulting in the occurrence of residual follicles (RF). The aims of this study were to characterize the blood flow in RF and to determine the effects of the treatment with estradiol benzoate on RF fate. Lactating, cyclic Holstein-Gir crossbred cows were used. In Experiment 1, follicular wave emergence (D0) was synchronized in cows (n = 10) and follicular growth was then monitored by transrectal ultrasonography from D0 to D8, followed by TVFA of the largest follicle present on the ovaries 24 h later. Color Doppler ultrasound imaging was used to examine blood flow on the follicular wall, which was recorded immediately before and every 12 h after TVFA, up to 72 h. In experiment 2, cows (n = 22) were randomly allocated to receive either 2 mL of saline i.m. (Control group, n = 11) or 2 mL estradiol benzoate i.m. (EB group, n = 11) immediately after TVFA. Ovaries were scanned every 12 h to confirm the presence and to measure the diameter of RF. The contents of the RF, if present, were collected 72 h after the first TVFA, using the same aspiration procedures. Follicular fluid from original follicles and RF were stored at -20 °C until hormonal assays. Results: In Experiment 1, there was no reduction (P > 0.05) of blood flow in the remaining follicle walls after TVFA and maximum blood flow values were observed at 49.5 ± 19.7 h post-TVFA. In Experiment 2, formation of RF after TVFA was proportionally similar between Controls (5/9) and EB (5/10) cows. Also, RF diameter did not differ between groups (P > 0.05). Nonetheless, the content of RF from cows in the EB group had lower (P = 0.0004) estradiol (E2) concentration and lower (P = 0.0005) E2:P4 ratio compared with Controls. Conclusions: In conclusion, 1) the persistence of vascularization in the remaining follicle wall may contribute to the formation of RF after follicle aspiration, and 2) the treatment with estradiol benzoate does not prevent formation of RF, but does reduce their estradiol production. MenosAbstract Background: Removal of the follicular content by ultrasound-guided transvaginal follicle aspiration (TVFA) may fail to induce immediate atresia and loss of function, resulting in the occurrence of residual follicles (RF). The aims of this study were to characterize the blood flow in RF and to determine the effects of the treatment with estradiol benzoate on RF fate. Lactating, cyclic Holstein-Gir crossbred cows were used. In Experiment 1, follicular wave emergence (D0) was synchronized in cows (n = 10) and follicular growth was then monitored by transrectal ultrasonography from D0 to D8, followed by TVFA of the largest follicle present on the ovaries 24 h later. Color Doppler ultrasound imaging was used to examine blood flow on the follicular wall, which was recorded immediately before and every 12 h after TVFA, up to 72 h. In experiment 2, cows (n = 22) were randomly allocated to receive either 2 mL of saline i.m. (Control group, n = 11) or 2 mL estradiol benzoate i.m. (EB group, n = 11) immediately after TVFA. Ovaries were scanned every 12 h to confirm the presence and to measure the diameter of RF. The contents of the RF, if present, were collected 72 h after the first TVFA, using the same aspiration procedures. Follicular fluid from original follicles and RF were stored at -20 °C until hormonal assays. Results: In Experiment 1, there was no reduction (P > 0.05) of blood flow in the remaining follicle walls after TVFA and maximum blood flow values were observed a... Mostrar Tudo |
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Palavras-Chave: |
Doppler; Ovary; Ovum pick-up; Vascularization. |
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Thesaurus NAL: |
steroidogenesis. |
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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/154765/1/Cnpgl-2016-JAnSciBiotech-Characterization.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/180781/1/s40104-016-0117-5.pdf
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Marc: |
LEADER 02952naa a2200241 a 4500
001 2062764
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aGHETTI, A. M.
245 $aCharacterization of blood flow and the effects of exogenous estradiol benzoate on residual follicles formed after ultrasound-guided transvaginal follicle aspiration in cattle.$h[electronic resource]
260 $c2016
520 $aAbstract Background: Removal of the follicular content by ultrasound-guided transvaginal follicle aspiration (TVFA) may fail to induce immediate atresia and loss of function, resulting in the occurrence of residual follicles (RF). The aims of this study were to characterize the blood flow in RF and to determine the effects of the treatment with estradiol benzoate on RF fate. Lactating, cyclic Holstein-Gir crossbred cows were used. In Experiment 1, follicular wave emergence (D0) was synchronized in cows (n = 10) and follicular growth was then monitored by transrectal ultrasonography from D0 to D8, followed by TVFA of the largest follicle present on the ovaries 24 h later. Color Doppler ultrasound imaging was used to examine blood flow on the follicular wall, which was recorded immediately before and every 12 h after TVFA, up to 72 h. In experiment 2, cows (n = 22) were randomly allocated to receive either 2 mL of saline i.m. (Control group, n = 11) or 2 mL estradiol benzoate i.m. (EB group, n = 11) immediately after TVFA. Ovaries were scanned every 12 h to confirm the presence and to measure the diameter of RF. The contents of the RF, if present, were collected 72 h after the first TVFA, using the same aspiration procedures. Follicular fluid from original follicles and RF were stored at -20 °C until hormonal assays. Results: In Experiment 1, there was no reduction (P > 0.05) of blood flow in the remaining follicle walls after TVFA and maximum blood flow values were observed at 49.5 ± 19.7 h post-TVFA. In Experiment 2, formation of RF after TVFA was proportionally similar between Controls (5/9) and EB (5/10) cows. Also, RF diameter did not differ between groups (P > 0.05). Nonetheless, the content of RF from cows in the EB group had lower (P = 0.0004) estradiol (E2) concentration and lower (P = 0.0005) E2:P4 ratio compared with Controls. Conclusions: In conclusion, 1) the persistence of vascularization in the remaining follicle wall may contribute to the formation of RF after follicle aspiration, and 2) the treatment with estradiol benzoate does not prevent formation of RF, but does reduce their estradiol production.
650 $asteroidogenesis
653 $aDoppler
653 $aOvary
653 $aOvum pick-up
653 $aVascularization
700 1 $aSIQUEIRA, L. G. B.
700 1 $aARASHIRO, E. K. N.
700 1 $aPALHÃO, M. P.
700 1 $aBRANDÃO, F. Z.
700 1 $aVIANA, J. H. M.
773 $tJournal of Animal Science and Biotechnology$gv. 7, article 59, 2016.
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Embrapa Gado de Leite (CNPGL) |
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