Pregnancy and delivery rates after vitrification of in vitro-produced Nelore (Bos indicus) embryos under field conditions

Background: Cryopreservation preserves cellular viability under low temperatures, resulting in diminished intracellular enzymatic activity and reduced cellular metabolism that ultimately allows preserving genetic material for indefinite periods of time. Embryos submitted to cryopreservation suffer f...

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Autores principales:	Lucas C. Pereira, José C. Ferreira-Silva, Ludymila C. Cantanhêde, Sarah R. L. Basto, Humberto F. Veloso Neto, Marcelo T. Moura, Marcos Antonio L. Oliveira
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2019
Materias:	cattle reproduction cryobiology cryoinjury cryotolerance embryo surplus embryo transfer Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/5b81b2d151344d9bad7458c1922c5661
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spelling	oai:doaj.org-article:5b81b2d151344d9bad7458c1922c56612021-12-01T19:15:23ZPregnancy and delivery rates after vitrification of in vitro-produced Nelore (Bos indicus) embryos under field conditions2256-295810.17533/udea.rccp.v32n1a05https://doaj.org/article/5b81b2d151344d9bad7458c1922c56612019-03-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/rccp/article/view/331789https://doaj.org/toc/2256-2958Background: Cryopreservation preserves cellular viability under low temperatures, resulting in diminished intracellular enzymatic activity and reduced cellular metabolism that ultimately allows preserving genetic material for indefinite periods of time. Embryos submitted to cryopreservation suffer from considerable morphological and functional damage, resulting in reduced survival and development rates. Objective: To evaluate pregnancy and delivery rates of in vitro-produced (IVP) Nellore (Bos indicus) embryos after vitrification under field conditions. Methods: The IVP embryos at blastocyst (Bl) and expanded blastocyst (Bx) were transferred fresh (n= 137) or after vitrification (n= 127). Results: Pregnancy rates at 35 d for fresh embryos were lower in Bl (41.6) than in Bx (60.9) (p0.05). Pregnancy loss at 60 d were similar (p>0.05) for both fresh (Bl: 3.1 and Bx: 4.8) and vitrified embryos (Bl: 1.9 and Bx: 4.7). Delivery rates were similar between groups (p>0.05). Conclusion: Both pregnancy and delivery rates of Bos indicus IVP embryos vitrified under field conditions are indistinguishable from fresh embryos.Lucas C. PereiraJosé C. Ferreira-SilvaLudymila C. CantanhêdeSarah R. L. BastoHumberto F. Veloso NetoMarcelo T. MouraMarcos Antonio L. OliveiraUniversidad de Antioquiaarticlecattle reproductioncryobiologycryoinjurycryotoleranceembryo surplusembryo transferAnimal cultureSF1-1100ENRevista Colombiana de Ciencias Pecuarias, Vol 32, Iss 1, Pp 43-49 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	cattle reproduction cryobiology cryoinjury cryotolerance embryo surplus embryo transfer Animal culture SF1-1100
spellingShingle	cattle reproduction cryobiology cryoinjury cryotolerance embryo surplus embryo transfer Animal culture SF1-1100 Lucas C. Pereira José C. Ferreira-Silva Ludymila C. Cantanhêde Sarah R. L. Basto Humberto F. Veloso Neto Marcelo T. Moura Marcos Antonio L. Oliveira Pregnancy and delivery rates after vitrification of in vitro-produced Nelore (Bos indicus) embryos under field conditions
description	Background: Cryopreservation preserves cellular viability under low temperatures, resulting in diminished intracellular enzymatic activity and reduced cellular metabolism that ultimately allows preserving genetic material for indefinite periods of time. Embryos submitted to cryopreservation suffer from considerable morphological and functional damage, resulting in reduced survival and development rates. Objective: To evaluate pregnancy and delivery rates of in vitro-produced (IVP) Nellore (Bos indicus) embryos after vitrification under field conditions. Methods: The IVP embryos at blastocyst (Bl) and expanded blastocyst (Bx) were transferred fresh (n= 137) or after vitrification (n= 127). Results: Pregnancy rates at 35 d for fresh embryos were lower in Bl (41.6) than in Bx (60.9) (p0.05). Pregnancy loss at 60 d were similar (p>0.05) for both fresh (Bl: 3.1 and Bx: 4.8) and vitrified embryos (Bl: 1.9 and Bx: 4.7). Delivery rates were similar between groups (p>0.05). Conclusion: Both pregnancy and delivery rates of Bos indicus IVP embryos vitrified under field conditions are indistinguishable from fresh embryos.
format	article
author	Lucas C. Pereira José C. Ferreira-Silva Ludymila C. Cantanhêde Sarah R. L. Basto Humberto F. Veloso Neto Marcelo T. Moura Marcos Antonio L. Oliveira
author_facet	Lucas C. Pereira José C. Ferreira-Silva Ludymila C. Cantanhêde Sarah R. L. Basto Humberto F. Veloso Neto Marcelo T. Moura Marcos Antonio L. Oliveira
author_sort	Lucas C. Pereira
title	Pregnancy and delivery rates after vitrification of in vitro-produced Nelore (Bos indicus) embryos under field conditions
title_short	Pregnancy and delivery rates after vitrification of in vitro-produced Nelore (Bos indicus) embryos under field conditions
title_full	Pregnancy and delivery rates after vitrification of in vitro-produced Nelore (Bos indicus) embryos under field conditions
title_fullStr	Pregnancy and delivery rates after vitrification of in vitro-produced Nelore (Bos indicus) embryos under field conditions
title_full_unstemmed	Pregnancy and delivery rates after vitrification of in vitro-produced Nelore (Bos indicus) embryos under field conditions
title_sort	pregnancy and delivery rates after vitrification of in vitro-produced nelore (bos indicus) embryos under field conditions
publisher	Universidad de Antioquia
publishDate	2019
url	https://doaj.org/article/5b81b2d151344d9bad7458c1922c5661
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Pregnancy and delivery rates after vitrification of in vitro-produced Nelore (Bos indicus) embryos under field conditions

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