Freezing goat embryos at different developmental stages and quality using ethylene glycol and a slow cooling rate
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Publication Date: | 2018 |
Other Authors: | , , , , |
Format: | Article |
Language: | eng |
Source: | Arquivo brasileiro de medicina veterinária e zootecnia (Online) |
Download full: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000501489 |
Summary: | ABSTRACT The efficiency of an alternative freezing protocol for goat embryos of different morphology and quality was tested. Fifty-eight embryos on Day 6-7 stage were transferred as fresh or after freeze-thawing (n=29/group). For freezing, embryos were placed into 1.5M ethylene-glycol solution for 10min. During this time, they were loaded in the central part of 0.25mL straw, separated by air bubble from columns containing PBS/BSA 0.4% plus 20% BFS. Straws were then frozen using a freezing machine from 20ºC to -6ºC at a cooling rate of 3ºC/min, stabilization for 15min (seeding after 5min), from -6 C to -32ºC at 0.6 C/min,and plunged into liquid nitrogen. Frozen embryos were thawed for 30s at 37ºC in a water bath. Embryos subjected to fresh transfer were maintained in holding medium (37ºC). Fresh and frozen-thawed embryos were transferred at day 7 post-estrus to 30 recipients. Kidding and kid born rates were similar (P> 0.05), respectively, for recipients receiving fresh (66.7% or 10/15; 55.2% or 16/29) or frozen-thawed (60% or 9/15; 51.7% or 15/29) embryos. The cryopreservation of goat embryos using slow-freezing protocol and 1.5MEG resulted in similar efficiency rates of fresh embryos. |
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Freezing goat embryos at different developmental stages and quality using ethylene glycol and a slow cooling rateembryo survivalembryo transfergoatslow freezingABSTRACT The efficiency of an alternative freezing protocol for goat embryos of different morphology and quality was tested. Fifty-eight embryos on Day 6-7 stage were transferred as fresh or after freeze-thawing (n=29/group). For freezing, embryos were placed into 1.5M ethylene-glycol solution for 10min. During this time, they were loaded in the central part of 0.25mL straw, separated by air bubble from columns containing PBS/BSA 0.4% plus 20% BFS. Straws were then frozen using a freezing machine from 20ºC to -6ºC at a cooling rate of 3ºC/min, stabilization for 15min (seeding after 5min), from -6 C to -32ºC at 0.6 C/min,and plunged into liquid nitrogen. Frozen embryos were thawed for 30s at 37ºC in a water bath. Embryos subjected to fresh transfer were maintained in holding medium (37ºC). Fresh and frozen-thawed embryos were transferred at day 7 post-estrus to 30 recipients. Kidding and kid born rates were similar (P> 0.05), respectively, for recipients receiving fresh (66.7% or 10/15; 55.2% or 16/29) or frozen-thawed (60% or 9/15; 51.7% or 15/29) embryos. The cryopreservation of goat embryos using slow-freezing protocol and 1.5MEG resulted in similar efficiency rates of fresh embryos.Universidade Federal de Minas Gerais, Escola de Veterinária2018-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000501489Arquivo Brasileiro de Medicina Veterinária e Zootecnia v.70 n.5 2018reponame:Arquivo brasileiro de medicina veterinária e zootecnia (Online)instname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMG10.1590/1678-4162-10196info:eu-repo/semantics/openAccessFonseca,J.F.Batista,R.I.T.P.Souza-Fabjan,J.M.G.Oliveira,M.E.F.Brandão,F.Z.Viana,J.H.M.eng2018-10-02T00:00:00Zoai:scielo:S0102-09352018000501489Revistahttps://www.scielo.br/j/abmvz/PUBhttps://old.scielo.br/oai/scielo-oai.phpjournal@vet.ufmg.br||abmvz.artigo@abmvz.org.br1678-41620102-0935opendoar:2018-10-02T00:00Arquivo brasileiro de medicina veterinária e zootecnia (Online) - Universidade Federal de Minas Gerais (UFMG)false |
dc.title.none.fl_str_mv |
Freezing goat embryos at different developmental stages and quality using ethylene glycol and a slow cooling rate |
title |
Freezing goat embryos at different developmental stages and quality using ethylene glycol and a slow cooling rate |
spellingShingle |
Freezing goat embryos at different developmental stages and quality using ethylene glycol and a slow cooling rate Fonseca,J.F. embryo survival embryo transfer goat slow freezing |
title_short |
Freezing goat embryos at different developmental stages and quality using ethylene glycol and a slow cooling rate |
title_full |
Freezing goat embryos at different developmental stages and quality using ethylene glycol and a slow cooling rate |
title_fullStr |
Freezing goat embryos at different developmental stages and quality using ethylene glycol and a slow cooling rate |
title_full_unstemmed |
Freezing goat embryos at different developmental stages and quality using ethylene glycol and a slow cooling rate |
title_sort |
Freezing goat embryos at different developmental stages and quality using ethylene glycol and a slow cooling rate |
author |
Fonseca,J.F. |
author_facet |
Fonseca,J.F. Batista,R.I.T.P. Souza-Fabjan,J.M.G. Oliveira,M.E.F. Brandão,F.Z. Viana,J.H.M. |
author_role |
author |
author2 |
Batista,R.I.T.P. Souza-Fabjan,J.M.G. Oliveira,M.E.F. Brandão,F.Z. Viana,J.H.M. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Fonseca,J.F. Batista,R.I.T.P. Souza-Fabjan,J.M.G. Oliveira,M.E.F. Brandão,F.Z. Viana,J.H.M. |
dc.subject.por.fl_str_mv |
embryo survival embryo transfer goat slow freezing |
topic |
embryo survival embryo transfer goat slow freezing |
description |
ABSTRACT The efficiency of an alternative freezing protocol for goat embryos of different morphology and quality was tested. Fifty-eight embryos on Day 6-7 stage were transferred as fresh or after freeze-thawing (n=29/group). For freezing, embryos were placed into 1.5M ethylene-glycol solution for 10min. During this time, they were loaded in the central part of 0.25mL straw, separated by air bubble from columns containing PBS/BSA 0.4% plus 20% BFS. Straws were then frozen using a freezing machine from 20ºC to -6ºC at a cooling rate of 3ºC/min, stabilization for 15min (seeding after 5min), from -6 C to -32ºC at 0.6 C/min,and plunged into liquid nitrogen. Frozen embryos were thawed for 30s at 37ºC in a water bath. Embryos subjected to fresh transfer were maintained in holding medium (37ºC). Fresh and frozen-thawed embryos were transferred at day 7 post-estrus to 30 recipients. Kidding and kid born rates were similar (P> 0.05), respectively, for recipients receiving fresh (66.7% or 10/15; 55.2% or 16/29) or frozen-thawed (60% or 9/15; 51.7% or 15/29) embryos. The cryopreservation of goat embryos using slow-freezing protocol and 1.5MEG resulted in similar efficiency rates of fresh embryos. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000501489 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000501489 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1678-4162-10196 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais, Escola de Veterinária |
publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais, Escola de Veterinária |
dc.source.none.fl_str_mv |
Arquivo Brasileiro de Medicina Veterinária e Zootecnia v.70 n.5 2018 reponame:Arquivo brasileiro de medicina veterinária e zootecnia (Online) instname:Universidade Federal de Minas Gerais (UFMG) instacron:UFMG |
instname_str |
Universidade Federal de Minas Gerais (UFMG) |
instacron_str |
UFMG |
institution |
UFMG |
reponame_str |
Arquivo brasileiro de medicina veterinária e zootecnia (Online) |
collection |
Arquivo brasileiro de medicina veterinária e zootecnia (Online) |
repository.name.fl_str_mv |
Arquivo brasileiro de medicina veterinária e zootecnia (Online) - Universidade Federal de Minas Gerais (UFMG) |
repository.mail.fl_str_mv |
journal@vet.ufmg.br||abmvz.artigo@abmvz.org.br |
_version_ |
1750220892307193856 |