EFFECT OF HANDLING AND ENVIRONMENTAL VARIABLES ON THE PREGNANCY RATE OF RECIPIENT COWS
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência animal brasileira (Online) |
Texto Completo: | https://revistas.ufg.br/vet/article/view/3166 |
Resumo: | This work aimed to verify the effects of the handling and thermal environment on the pregnancy rate of embryo-recipient zebu x European cows (n=94) as well as the behavioral and clinical aspects at the moment of embryo transfer. Cortisol was analyzed by plasmatic samplers collected on D0, D9 and D16 of the hormonal treatment for estrous synchronization; blood was also sampled to analyze progesterone levels at the moment of embryo transfer. There was no difference (p>0.05) between pregnant and not pregnant females for maturation stage and embryo classification, coat, and reactivity between fresh and frozen embryos. The cortisol concentrations decreased (p>0.001) between D0 and D16, and the concentration of progesterone was similar in function of the pregnancy stage. Nevertheless progesterone in D16 for non pregnant cows was lower than for pregnant ones in the same day. Moreover, pregnant cows showed lower skin temperature. The values of Black Globe-Humidity Index were at very high limits, indicating that all animals could be under heat stress. The regression analysis indicated a tendency (p=0.08) to increase the pregnancy probability of 25% between the beginning and end of the afternoon. Thus, low plasmatic concentration of progesterone and high skin temperature represents a factor of thermal discomfort at the moment of the embryo receiving, influencing the pregnancy rate of recipient cows. As observed, heat stress decreased the probability of the pregnancy of recipient cows in tropical environment. KEYSWORDS: Beef cattle, cortisol, handling, heat stress, pregnancy rate. |
id |
UFG-7_956ef424d52c997d87d8d2598fcc3b30 |
---|---|
oai_identifier_str |
oai:ojs.revistas.ufg.br:article/3166 |
network_acronym_str |
UFG-7 |
network_name_str |
Ciência animal brasileira (Online) |
repository_id_str |
|
spelling |
EFFECT OF HANDLING AND ENVIRONMENTAL VARIABLES ON THE PREGNANCY RATE OF RECIPIENT COWSEFEITO DO MANEJO E DE VARIÁVEIS BIOCLIMÁTICAS SOBRE A TAXA DE GESTAÇÃO EM VACAS RECEPTORAS DE EMBRIÕESAnimal ProductionProdução animalThis work aimed to verify the effects of the handling and thermal environment on the pregnancy rate of embryo-recipient zebu x European cows (n=94) as well as the behavioral and clinical aspects at the moment of embryo transfer. Cortisol was analyzed by plasmatic samplers collected on D0, D9 and D16 of the hormonal treatment for estrous synchronization; blood was also sampled to analyze progesterone levels at the moment of embryo transfer. There was no difference (p>0.05) between pregnant and not pregnant females for maturation stage and embryo classification, coat, and reactivity between fresh and frozen embryos. The cortisol concentrations decreased (p>0.001) between D0 and D16, and the concentration of progesterone was similar in function of the pregnancy stage. Nevertheless progesterone in D16 for non pregnant cows was lower than for pregnant ones in the same day. Moreover, pregnant cows showed lower skin temperature. The values of Black Globe-Humidity Index were at very high limits, indicating that all animals could be under heat stress. The regression analysis indicated a tendency (p=0.08) to increase the pregnancy probability of 25% between the beginning and end of the afternoon. Thus, low plasmatic concentration of progesterone and high skin temperature represents a factor of thermal discomfort at the moment of the embryo receiving, influencing the pregnancy rate of recipient cows. As observed, heat stress decreased the probability of the pregnancy of recipient cows in tropical environment. KEYSWORDS: Beef cattle, cortisol, handling, heat stress, pregnancy rate.Para verificar o efeito do manejo e do ambiente sobre a taxa de gestação de receptoras bovinas cruzadas zebu x europeu (n=94) de embriões Nelore registraram-se o comportamento e variáveis clínicas e climáticas durante o protocolo de sincronização de cio e no dia da inovulação. Foi determinada a concentração de cortisol plasmático (n=36) no D0, D9 e D16 do protocolo e de progesterona (P4) no dia da inovulação. Não houve diferença significativa entre fêmeas gestantes (GEST) e não gestantes (nGEST) quanto ao estágio de maturação e classificação do embrião, pelagem, comportamento ou entre embriões descongelados e fresco. A concentração média de cortisol variou significativamente entre D0 e D16 (P>0,001). A P4 do D16 foi menor nas nGEST (PUniversidade Federal de Goiás2010-06-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionResearchAvaliado por parespesquisa científicaapplication/pdftext/htmlhttps://revistas.ufg.br/vet/article/view/316610.5216/cab.v11i2.3166Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 11 No. 2 (2010); 280-291Ciência Animal Brasileira / Brazilian Animal Science; v. 11 n. 2 (2010); 280-2911809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/vet/article/view/3166/6831https://revistas.ufg.br/vet/article/view/3166/8152Costa e Silva, Eliane Vianna daKatayama, Kamyla AyumiMacedo, Gustavo GuerinoRueda, Paola MorettiAbreu, Urbano Gomes Pinto deZúccari, Carmem Estefânia Serra Netoinfo:eu-repo/semantics/openAccess2010-06-23T13:24:50Zoai:ojs.revistas.ufg.br:article/3166Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2024-05-21T19:55:05.914090Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
EFFECT OF HANDLING AND ENVIRONMENTAL VARIABLES ON THE PREGNANCY RATE OF RECIPIENT COWS EFEITO DO MANEJO E DE VARIÁVEIS BIOCLIMÁTICAS SOBRE A TAXA DE GESTAÇÃO EM VACAS RECEPTORAS DE EMBRIÕES |
title |
EFFECT OF HANDLING AND ENVIRONMENTAL VARIABLES ON THE PREGNANCY RATE OF RECIPIENT COWS |
spellingShingle |
EFFECT OF HANDLING AND ENVIRONMENTAL VARIABLES ON THE PREGNANCY RATE OF RECIPIENT COWS Costa e Silva, Eliane Vianna da Animal Production Produção animal |
title_short |
EFFECT OF HANDLING AND ENVIRONMENTAL VARIABLES ON THE PREGNANCY RATE OF RECIPIENT COWS |
title_full |
EFFECT OF HANDLING AND ENVIRONMENTAL VARIABLES ON THE PREGNANCY RATE OF RECIPIENT COWS |
title_fullStr |
EFFECT OF HANDLING AND ENVIRONMENTAL VARIABLES ON THE PREGNANCY RATE OF RECIPIENT COWS |
title_full_unstemmed |
EFFECT OF HANDLING AND ENVIRONMENTAL VARIABLES ON THE PREGNANCY RATE OF RECIPIENT COWS |
title_sort |
EFFECT OF HANDLING AND ENVIRONMENTAL VARIABLES ON THE PREGNANCY RATE OF RECIPIENT COWS |
author |
Costa e Silva, Eliane Vianna da |
author_facet |
Costa e Silva, Eliane Vianna da Katayama, Kamyla Ayumi Macedo, Gustavo Guerino Rueda, Paola Moretti Abreu, Urbano Gomes Pinto de Zúccari, Carmem Estefânia Serra Neto |
author_role |
author |
author2 |
Katayama, Kamyla Ayumi Macedo, Gustavo Guerino Rueda, Paola Moretti Abreu, Urbano Gomes Pinto de Zúccari, Carmem Estefânia Serra Neto |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Costa e Silva, Eliane Vianna da Katayama, Kamyla Ayumi Macedo, Gustavo Guerino Rueda, Paola Moretti Abreu, Urbano Gomes Pinto de Zúccari, Carmem Estefânia Serra Neto |
dc.subject.por.fl_str_mv |
Animal Production Produção animal |
topic |
Animal Production Produção animal |
description |
This work aimed to verify the effects of the handling and thermal environment on the pregnancy rate of embryo-recipient zebu x European cows (n=94) as well as the behavioral and clinical aspects at the moment of embryo transfer. Cortisol was analyzed by plasmatic samplers collected on D0, D9 and D16 of the hormonal treatment for estrous synchronization; blood was also sampled to analyze progesterone levels at the moment of embryo transfer. There was no difference (p>0.05) between pregnant and not pregnant females for maturation stage and embryo classification, coat, and reactivity between fresh and frozen embryos. The cortisol concentrations decreased (p>0.001) between D0 and D16, and the concentration of progesterone was similar in function of the pregnancy stage. Nevertheless progesterone in D16 for non pregnant cows was lower than for pregnant ones in the same day. Moreover, pregnant cows showed lower skin temperature. The values of Black Globe-Humidity Index were at very high limits, indicating that all animals could be under heat stress. The regression analysis indicated a tendency (p=0.08) to increase the pregnancy probability of 25% between the beginning and end of the afternoon. Thus, low plasmatic concentration of progesterone and high skin temperature represents a factor of thermal discomfort at the moment of the embryo receiving, influencing the pregnancy rate of recipient cows. As observed, heat stress decreased the probability of the pregnancy of recipient cows in tropical environment. KEYSWORDS: Beef cattle, cortisol, handling, heat stress, pregnancy rate. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06-22 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Research Avaliado por pares pesquisa científica |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/vet/article/view/3166 10.5216/cab.v11i2.3166 |
url |
https://revistas.ufg.br/vet/article/view/3166 |
identifier_str_mv |
10.5216/cab.v11i2.3166 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/vet/article/view/3166/6831 https://revistas.ufg.br/vet/article/view/3166/8152 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 11 No. 2 (2010); 280-291 Ciência Animal Brasileira / Brazilian Animal Science; v. 11 n. 2 (2010); 280-291 1809-6891 1518-2797 reponame:Ciência animal brasileira (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Ciência animal brasileira (Online) |
collection |
Ciência animal brasileira (Online) |
repository.name.fl_str_mv |
Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
||revistacab@gmail.com |
_version_ |
1799874784377438208 |