Non-surgical embryo transfer in goats and sheep: the Brazilian experience
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1071/RD18324 http://hdl.handle.net/11449/186318 |
Resumo: | Brazil has presented tremendous progress in non-surgical embryo transfer (NSET) in sheep and goats. New instruments and techniques for non-surgical embryo recovery (NSER) and NSET in small ruminants were implemented. Recent improvements include refinement of the protocols for cervical relaxation combining oestradiol-oxytocin-cloprostenol treatment at specific times before NSER in sheep; recipient goats do not require any hormonal drugs to induce cervical dilation and direct embryo transfer by the cervical route yields excellent results. Transrectal ovarian ultrasonography (B-mode but especially colour Doppler) have proven to be accurate methods to localise and enumerate corpora lutea and luteinised unovulated follicles in recipient and donor does and ewes. An array of new criteria for selecting superior animals for NSER and NSET (e.g. cervical mapping) have been developed by Brazilian researchers. Extensive studies on both technologies were initially conducted in commercial breeds of goats and sheep but have been gradually extended to some native breeds of sheep (germplasm conservation) and dairy goat operations. It is speculated that, in future, NSER and NSET may become methods of choice for caprine and ovine embryo recovery and transfer in Brazil, and then globally. Due primarily to the efficiency of NSET in goats, a novel interspecies (e.g. bovine) IVP method may soon be developed on a large scale. The Brazilian experience is an invaluable source of information and know-how promoting the replacement of conventional surgical assisted reproductive technologies with non-surgical procedures and hence supporting the rapid development of the embryo transfer industry in small ruminants. |
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Non-surgical embryo transfer in goats and sheep: the Brazilian experiencecervical routeinvivo embryo productionmultiple ovulation and embryo transfer (MOET)small ruminantstranscervical embryo collectionBrazil has presented tremendous progress in non-surgical embryo transfer (NSET) in sheep and goats. New instruments and techniques for non-surgical embryo recovery (NSER) and NSET in small ruminants were implemented. Recent improvements include refinement of the protocols for cervical relaxation combining oestradiol-oxytocin-cloprostenol treatment at specific times before NSER in sheep; recipient goats do not require any hormonal drugs to induce cervical dilation and direct embryo transfer by the cervical route yields excellent results. Transrectal ovarian ultrasonography (B-mode but especially colour Doppler) have proven to be accurate methods to localise and enumerate corpora lutea and luteinised unovulated follicles in recipient and donor does and ewes. An array of new criteria for selecting superior animals for NSER and NSET (e.g. cervical mapping) have been developed by Brazilian researchers. Extensive studies on both technologies were initially conducted in commercial breeds of goats and sheep but have been gradually extended to some native breeds of sheep (germplasm conservation) and dairy goat operations. It is speculated that, in future, NSER and NSET may become methods of choice for caprine and ovine embryo recovery and transfer in Brazil, and then globally. Due primarily to the efficiency of NSET in goats, a novel interspecies (e.g. bovine) IVP method may soon be developed on a large scale. The Brazilian experience is an invaluable source of information and know-how promoting the replacement of conventional surgical assisted reproductive technologies with non-surgical procedures and hence supporting the rapid development of the embryo transfer industry in small ruminants.Brazilian Agricultural Research Corporation (Embrapa)Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Embrapa Caprinos & Ovinos, Estr Sobral Groairas,Km 4,CP D 10, BR-62011000 Sobral, CE, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, BrazilUniv Fed Fluminense, Rua Vital Brazil Filho 64, BR-24230340 Niteroi, RJ, BrazilEmbrapa Pecuaria Sudeste, Rodovia Washington Luiz,Km 234 S-N,Caixa 339, BR-13560970 Sao Carlos, SP, BrazilUniv Guelph, Ontario Vet Coll, Dept Biomed Sci, 50 Stone Rd, Guelph, ON N1G 2W1, CanadaUniv Estadual Paulista, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, BrazilBrazilian Agricultural Research Corporation (Embrapa): 02.13.06.026.00.01FAPEMIG: CVZ-PPM 00201-17Csiro PublishingEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Estadual Paulista (Unesp)Universidade Federal Fluminense (UFF)Univ GuelphFonseca, Jeferson F.Oliveira, Maria Emilia F. [UNESP]Brandao, Felipe Z.Batista, Ribrio I. T. P.Garcia, Alexandre R.Bartlewski, Pawel M.Souza-Fabjan, Joanna M. G.2019-10-04T18:36:39Z2019-10-04T18:36:39Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article17-26http://dx.doi.org/10.1071/RD18324Reproduction Fertility And Development. Clayton: Csiro Publishing, v. 31, n. 1, p. 17-26, 2019.1031-3613http://hdl.handle.net/11449/18631810.1071/RD18324WOS:000452740000003Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengReproduction Fertility And Developmentinfo:eu-repo/semantics/openAccess2021-10-22T21:54:20Zoai:repositorio.unesp.br:11449/186318Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T21:54:20Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Non-surgical embryo transfer in goats and sheep: the Brazilian experience |
title |
Non-surgical embryo transfer in goats and sheep: the Brazilian experience |
spellingShingle |
Non-surgical embryo transfer in goats and sheep: the Brazilian experience Fonseca, Jeferson F. cervical route invivo embryo production multiple ovulation and embryo transfer (MOET) small ruminants transcervical embryo collection |
title_short |
Non-surgical embryo transfer in goats and sheep: the Brazilian experience |
title_full |
Non-surgical embryo transfer in goats and sheep: the Brazilian experience |
title_fullStr |
Non-surgical embryo transfer in goats and sheep: the Brazilian experience |
title_full_unstemmed |
Non-surgical embryo transfer in goats and sheep: the Brazilian experience |
title_sort |
Non-surgical embryo transfer in goats and sheep: the Brazilian experience |
author |
Fonseca, Jeferson F. |
author_facet |
Fonseca, Jeferson F. Oliveira, Maria Emilia F. [UNESP] Brandao, Felipe Z. Batista, Ribrio I. T. P. Garcia, Alexandre R. Bartlewski, Pawel M. Souza-Fabjan, Joanna M. G. |
author_role |
author |
author2 |
Oliveira, Maria Emilia F. [UNESP] Brandao, Felipe Z. Batista, Ribrio I. T. P. Garcia, Alexandre R. Bartlewski, Pawel M. Souza-Fabjan, Joanna M. G. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Universidade Estadual Paulista (Unesp) Universidade Federal Fluminense (UFF) Univ Guelph |
dc.contributor.author.fl_str_mv |
Fonseca, Jeferson F. Oliveira, Maria Emilia F. [UNESP] Brandao, Felipe Z. Batista, Ribrio I. T. P. Garcia, Alexandre R. Bartlewski, Pawel M. Souza-Fabjan, Joanna M. G. |
dc.subject.por.fl_str_mv |
cervical route invivo embryo production multiple ovulation and embryo transfer (MOET) small ruminants transcervical embryo collection |
topic |
cervical route invivo embryo production multiple ovulation and embryo transfer (MOET) small ruminants transcervical embryo collection |
description |
Brazil has presented tremendous progress in non-surgical embryo transfer (NSET) in sheep and goats. New instruments and techniques for non-surgical embryo recovery (NSER) and NSET in small ruminants were implemented. Recent improvements include refinement of the protocols for cervical relaxation combining oestradiol-oxytocin-cloprostenol treatment at specific times before NSER in sheep; recipient goats do not require any hormonal drugs to induce cervical dilation and direct embryo transfer by the cervical route yields excellent results. Transrectal ovarian ultrasonography (B-mode but especially colour Doppler) have proven to be accurate methods to localise and enumerate corpora lutea and luteinised unovulated follicles in recipient and donor does and ewes. An array of new criteria for selecting superior animals for NSER and NSET (e.g. cervical mapping) have been developed by Brazilian researchers. Extensive studies on both technologies were initially conducted in commercial breeds of goats and sheep but have been gradually extended to some native breeds of sheep (germplasm conservation) and dairy goat operations. It is speculated that, in future, NSER and NSET may become methods of choice for caprine and ovine embryo recovery and transfer in Brazil, and then globally. Due primarily to the efficiency of NSET in goats, a novel interspecies (e.g. bovine) IVP method may soon be developed on a large scale. The Brazilian experience is an invaluable source of information and know-how promoting the replacement of conventional surgical assisted reproductive technologies with non-surgical procedures and hence supporting the rapid development of the embryo transfer industry in small ruminants. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-04T18:36:39Z 2019-10-04T18:36:39Z 2019-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1071/RD18324 Reproduction Fertility And Development. Clayton: Csiro Publishing, v. 31, n. 1, p. 17-26, 2019. 1031-3613 http://hdl.handle.net/11449/186318 10.1071/RD18324 WOS:000452740000003 |
url |
http://dx.doi.org/10.1071/RD18324 http://hdl.handle.net/11449/186318 |
identifier_str_mv |
Reproduction Fertility And Development. Clayton: Csiro Publishing, v. 31, n. 1, p. 17-26, 2019. 1031-3613 10.1071/RD18324 WOS:000452740000003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Reproduction Fertility And Development |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
17-26 |
dc.publisher.none.fl_str_mv |
Csiro Publishing |
publisher.none.fl_str_mv |
Csiro Publishing |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797789743780462592 |