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Registros recuperados: 61 | |
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FIGUEIRA, L. M.; ALVES, N. G.; SOUZA-FABJAN, J. M. G.; BATISTA, R. I. T. P.; SOUZA, L. C.; MAIA, A. L. R. S.; BRAIR, V. L.; FILQUEIRAS, M.; SOUZA, G. N. de; FONSECA, J. F. da. |
This study assessed two superovulatory treatments and the feasibility of transcervical embryo recovery in Lacaune ewes. Ewes (n=23) received medroxyprogesterone acetate sponges (60mg, Progespon®, Syntex, (Prolise®, Tecnopec, São Paulo, Brazil) 24 h before sponge removal and were superovulated with 133 mg of porcine FSH i.m. (Folltropin®-V; Bioniche Animal Health, Belleville, Canada) in six decreasing doses (twice daily) at 60 h before sponge removal, under a crossover design. In conclusion, both treatments showed high variability in ovulatory response which might reduce the embryo yield average from donors. The protocol for cervical relaxation allowed the transcervical embryo recovery in high percentage of Lacaune ewes. |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: Transcervical embryo; Superovulated females; FSH; Ovino; Reprodução Animal; Superovulação; Transferência de Embrião; Progesterona; Sheep; Ewes; Animal reproduction; Superovulation; Embryo transfer; Medroxyprogesterone; Synthetic progestogens. |
Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095116 |
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BRAGANÇA, G. M.; BATISTA, R. I. T. P.; SOUZA, C. V.; SANTOS, J. D. R.; ARASHIRO, E. K. N.; FONSECA, J. F. da; BRANDÃO, F. Z.; SOUZA-FABJAN, J. M. G.. |
Progesterone (P4) and its analogues (progestins) are commonly used in estrus synchronization protocols and to hold the LH surge during ovarian stimulation to allow oocyte recovery in live donor ewes. However, recent evidence suggests that some progestins may have a deleterious effect on embryo quality after long-term use. Thus, the present study aimed to evaluate the effect of two progestin devices used during ovarian stimulation on the COC quality in donor ewes. In conclusion, the progestin device alters the expression of genes related to quality and the steroidogenesis pathway in fully-grown COCs, and the use of a natural P4 device may improve the development competence of COCs. Further studies including IVP are necessary to confirm our findings. |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: Ovino; Reprodução Animal; Transferência de Embrião; Sheep; Oocytes; Progestogen receptors; Steroid hormones; Embryo transfer; Ewes. |
Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095158 |
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TAIRA, A. R.; SANTOS, J. D. R.; COSENTINO, I. O.; BRAIR, V. L.; ESPÍRITO SANTO, C. G. do; PINTO, P. H. N.; SOUZA-FABJAN, J. M. G. de; FONSECA, J. F. da; UNGERFELD, R.; BRANDÃO, J. Z.. |
The success of multiple ovulation and embryo transfer strongly depends on superovulatory protocols (SOV) success which has shown inconstant. SOV protocols have used different sources of progestogen with could impact viable embryo yield. This study compared the effect of different intravaginal devices containing medroxyprogesterone acetate (MAP) or progesterone (P4) during SOV on follicular development and the embryo quality. In conclusion, the administration of P4 or MAP in SOV protocols did not influence the amount of structures recovered in sheep. However, the greater percentage of viable embryos/recovered structures with the use of exogenous progesterone suggests that the hormonal milieu in which these follicles developed influences the final embryo... |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: Sheep; Animal reproduction; Superovulation; Embryo transfer; Progesterone. |
Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132654 |
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MAIA, A. L. R. e S.; OLIVEIRA, M. E. F.; ZAMBRINI, Z. N.; SOUZA-FABJAN, J. G.; BARTLEWSKI, P. M.; GUIMARÃES, J. D.; BRANDÃO, F. Z.; FONSECA, J. F. da. |
This study compared short- and long-term estrus synchronization in 16 cycling Santa Inês ewes. All ewes were submitted to the two protocols in a cross?over design resulting in replicates #1 and #2 with 16 ewes, each one. Ewes were synchronized with intravaginal sponges containing 60 mg medroxyprogesterone acetate (Progespon®, Schering Plough, São Paulo, Brazil) for 6.5 (G?6.5d) or 14.5 (G?14.5d) days, followed by a superovulation (SOV) of 4 or 3 days with decreasing doses of pFSH (Folltropin®?V, Bioniche Animal Health Canada Inc., Belleville, Canada), respectively. |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: Sheep; Animal reproduction; Superovulation; Embryo transfer; Estrus synchronization. |
Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132646 |
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FIGUEIRA, L.; ALVES, N.; SOUZA-FABJAN, J.; BATISTA, B.; SOUZA, L.; DIÓGENES, Y.; BRAIR, V.; SOUZA, G.; FONSECA, J. F. da. |
Abstract: The degree of completeness and interdigitation of the cervical rings affects cervical passage, which is a necessary step for transcervical embryo collection. This study assessed the use of cervical ultrasonography (US) to select the most suitable animals for transcervical embryo collections. In conclusion, US cervical evaluation allows estimating the number of rings, and the ranking of animals by US cervical misalignment, making possible to select animals suitable for transcervical embryo collection. |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: Semen collection; Sheep; Embryo transfer; Ultrasonography; Animal exploration and collection. |
Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095499 |
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TREVIZAN, J. T.; NOCITI, R. P.; PEDROSA, A. C.; BRAIR, V. L.; OLIVEIRA, I. C.; BALARO, M. F. A.; MAIA, A. L. R. S.; PRASTES, J. F.; BRANDÃO, F. Z.; FONSECA, J. F. da; OLIVEIRA, M. E.. |
The present study tested the hypothesis that hCG and pFSH stimulate the follicular development and consequently corpora lutea, in a manner equivalent to those induced by eCG in goat. Eighty-five Toggenburg goats, during the seasonal transition period (December, 21ºS), underwent a short-duration estrus induction/synchronization protocol with a sponge impregnated with medroxyprogesterone acetate (60 mg MAP, 6 days). In conclusion, the use of hCG and pFSH in protocol of estrus induction/synchronization in goats induces equivalent luteal dynamics and conception rate, being substitutes for eCG. |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: HCG; ECG; Induction; Corpora lutea; Corpo Lúteo; Caprino; Reprodução Animal; Transferência de Embrião; Sincronização do Cio; Ciclo Estral; Prenhez; Goats; Animal reproduction; Estrus synchronization; Medroxyprogesterone; Artificial insemination; Follicular development; Embryo transfer; Pregnancy. |
Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095126 |
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Greco,Gabriel Maksoud; Burlamaqui,Fábio Luis Gonçalves; Pinna,Aline Emerim; Queiroz,Fernando José Rohen de; Cunha,Maria Pia dos Santos; Brandão,Felipe Zandonadi. |
The objective of this study was to evaluate the efficiency of cyclic and acyclic progesterone-treated recipient mares in a commercial embryo transfer program. Acyclic recipients were treated with decreasing amounts of estradiol cypionate (ECP® - Pfizer Saúde Animal, São Paulo, Brazil), followed by 1500 mg of a sustained-release progesterone injection (P4LA150® - Laboratórios B.E.T., Rio de Janeiro, Brazil). Out of all 1506 embryo recovery attempts performed, 59.36% were positive (894/1506). Pregnancy rates of cyclic and acyclic mares were, respectively, 44.12% (319/723) and 57.68% (139/241) - higher in acyclic recipients under progesterone treatment. Embryo loss was similar between groups (9.72% 31/319 vs. 11.51% - 16/139). When fertility data on acyclic... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Embryo loss; Embryo transfer; Mare; Pregnancy. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300019 |
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ANDRIOLI, A.; SALLES, H. O.; PINHEIRO, R. R.; SIMPLICIO, A. A.; SOARES, A. T.; MOURA SOBRINHO, P. A.; SOARES, B. A.; SANTA ROSA, M. R.. |
0 experimento teve como objetivo utilizar a técnica de transferência de embriôes como instrumento de controle da CAEV num rebanho de alto padrão genético. Foram utilizadas sete cabras da raça Saanen soropositivas para o vírus da CAEV e três cabras mestiças soronegativas como doadoras e como receptoras, respectivamente. O diagnóstico da CAEV foi realizado através do teste de imonodifusão em gel de agarose, obtendo-se comprovação da soronegatividade das fêmeas após três repetiçôes com intervalo de seis meses. Doadoras e receptoras tiveram o estro sincronizado com esponjas vaginais (11 dias) impregnadas com 60 mg de acetato de medroxiprogesterona, sendo aplicado 50 mg de cloprostenol no nono dia da sincronização. No mesmo dia iniciou-se a superovulação das... |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: Artrite encefalite caprina; CAEV; Controle.; Caprino; Doença animal; Artrite; Transferência de embrião; Goats; Goat diseases; Animal diseases; Caprine arthritis encephalitis virus; Embryo transfer; Brazil.; Disease control. |
Ano: 1995 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/514170 |
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SALLES, H. O.; ANDRIOLI, A.; SOARES, A. T.; MOURA SOBRINHO, P. A.; MARQUES, M. A. J.; MORAES, J. B.. |
Reuniao Anual da Sociedade Brasileira de Transferencia de Embriao, 11, 1996, Cauela. [Anais]. Porto Alegre: UFRGS, 1996. |
Tipo: Artigo de periódico |
Palavras-chave: Semi-laparoscopia; Caprino; Transferência de embrião; Reprodução animal; Goats; Embryo transfer; Reproduction. |
Ano: 1996 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/514168 |
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Registros recuperados: 61 | |
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