Resynchronization of estrus in sheep using two or three artificial inseminations with frozen semen
Autor(a) principal: | |
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Data de Publicação: | 2024 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por eng |
Título da fonte: | Ciência animal brasileira (Online) |
Texto Completo: | https://revistas.ufg.br/vet/article/view/76929 |
Resumo: | This study aimed to evaluate the efficiency of two or three estrus synchronizations followed by artificial insemination (AI) by laparoscopy with frozen semen in sheep. Santa Inês sheep (n=147) were randomly distributed into two groups: Re-sync – 2FTAI (n=72) and Doppler – 3FTAI (n=75), synchronized with a short protocol associated with GnRH and AI by laparoscopy with frozen semen 50 h after removing the P4 device (D0). Two AIs were performed in the Re-sync group, with the start of the resynchronization protocol on D23 and gestational diagnosis on D30; the non-pregnant females were inseminated again. The sheep were resynchronized (D10) in the Doppler group and the gestation diagnosis was made early at 17 days using Doppler ultrasound. The open females were inseminated again, totaling three inseminations in 42 days. Early gestation diagnoses were confirmed at 30 days. Re-sync (29.16%) and Doppler (21.33%) were similar to each other in terms of cumulative gestation rate (P>0.05). The indicators of the non-gestation diagnosis technique at 17 days were sensitivity of 100%, specificity of 28%, positive predictive value of 21.3%, negative predictive value of 100%, and accuracy of 39.8%. Early diagnosis allowed sheep to be inseminated two to three times in the same period and was effective in diagnosing truly non-pregnant females. Therefore, estrus resynchronization associated with AI by laparoscopy using frozen semen can be applied in sheep, but a higher gestation rate could not be achieved with two or three inseminations at the end of the breeding season. |
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Ciência animal brasileira (Online) |
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Resynchronization of estrus in sheep using two or three artificial inseminations with frozen semenRessincronização de estro em ovinos utilizando duas ou três inseminações artificiais com sêmen congeladoThis study aimed to evaluate the efficiency of two or three estrus synchronizations followed by artificial insemination (AI) by laparoscopy with frozen semen in sheep. Santa Inês sheep (n=147) were randomly distributed into two groups: Re-sync – 2FTAI (n=72) and Doppler – 3FTAI (n=75), synchronized with a short protocol associated with GnRH and AI by laparoscopy with frozen semen 50 h after removing the P4 device (D0). Two AIs were performed in the Re-sync group, with the start of the resynchronization protocol on D23 and gestational diagnosis on D30; the non-pregnant females were inseminated again. The sheep were resynchronized (D10) in the Doppler group and the gestation diagnosis was made early at 17 days using Doppler ultrasound. The open females were inseminated again, totaling three inseminations in 42 days. Early gestation diagnoses were confirmed at 30 days. Re-sync (29.16%) and Doppler (21.33%) were similar to each other in terms of cumulative gestation rate (P>0.05). The indicators of the non-gestation diagnosis technique at 17 days were sensitivity of 100%, specificity of 28%, positive predictive value of 21.3%, negative predictive value of 100%, and accuracy of 39.8%. Early diagnosis allowed sheep to be inseminated two to three times in the same period and was effective in diagnosing truly non-pregnant females. Therefore, estrus resynchronization associated with AI by laparoscopy using frozen semen can be applied in sheep, but a higher gestation rate could not be achieved with two or three inseminations at the end of the breeding season.Objetivou-se avaliar a eficiência de duas ou três sincronizações de estro seguida da inseminação artificial (IA) por laparoscopia com sêmen congelado em ovinos. As ovelhas Santa Inês (n=147) foram distribuídas aleatoriamente em 2 grupos: Re-sync – 2IATF (n=72) e Doppler - 3IATF (n=75), sincronizadas com protocolo curto associado ao GnRH e IA por laparoscopia com sêmen congelado 50 horas após a retirada do dispositivo P4 (D0). No grupo Re-sync foram realizadas duas IA com início do protocolo de ressincronização em D23 e diagnóstico gestacional em D30, as fêmeas não gestantes eram inseminadas novamente. No grupo Doppler as ovelhas foram ressincronizadas (D10) e o diagnóstico de gestação realizado precocemente aos 17 dias, com auxílio da ultrassonografia Doppler. As fêmeas vazias eram inseminadas novamente, totalizando três inseminações em 42 dias. Os diagnósticos precoces de gestação foram confirmados com 30 dias. Re-sync (29,16%) e Doppler (21,33%), foram semelhantes entre si na taxa de prenhez acumulativa (P>0,05). Os indicadores da técnica de diagnóstico de não-gestação aos 17 dias foram: sensibilidade 100%, especificidade 28%, valor preditivo positivo 21,3%, valor preditivo negativo 100% e acurácia 39,8%. Com o auxílio do diagnóstico precoce as ovelhas puderam ser inseminadas de duas a três vezes no mesmo período e mostrou efetividade em diagnosticar as fêmeas verdadeiramente não gestante. Conclui-se que a ressincronização de estro associada a IA por laparoscopia utilizando sêmen congelado pode ser aplicada em ovinos, entretanto não foi possível alcançar maior taxa de prenhez com duas ou três inseminações ao final da estação de monta.Universidade Federal de Goiás2024-01-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://revistas.ufg.br/vet/article/view/76929Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 25 (2024): Publicação continuaCiência Animal Brasileira / Brazilian Animal Science; v. 25 (2024): Publicação continua1809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporenghttps://revistas.ufg.br/vet/article/view/76929/40753https://revistas.ufg.br/vet/article/view/76929/40754https://revistas.ufg.br/vet/article/view/76929/40870https://revistas.ufg.br/vet/article/view/76929/40871Copyright (c) 2024 Ciência Animal Brasileira / Brazilian Animal Sciencehttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessDrechmer, JéssicaBasílio, Lucas Macêdo SantosTeixeira, Heitor Castro AlvesRamos, Alexandre FlorianiSilva, Bianca Damiani Marques2024-03-27T21:44:33Zoai:ojs.revistas.ufg.br:article/76929Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2024-05-21T19:56:38.262175Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
Resynchronization of estrus in sheep using two or three artificial inseminations with frozen semen Ressincronização de estro em ovinos utilizando duas ou três inseminações artificiais com sêmen congelado |
title |
Resynchronization of estrus in sheep using two or three artificial inseminations with frozen semen |
spellingShingle |
Resynchronization of estrus in sheep using two or three artificial inseminations with frozen semen Drechmer, Jéssica |
title_short |
Resynchronization of estrus in sheep using two or three artificial inseminations with frozen semen |
title_full |
Resynchronization of estrus in sheep using two or three artificial inseminations with frozen semen |
title_fullStr |
Resynchronization of estrus in sheep using two or three artificial inseminations with frozen semen |
title_full_unstemmed |
Resynchronization of estrus in sheep using two or three artificial inseminations with frozen semen |
title_sort |
Resynchronization of estrus in sheep using two or three artificial inseminations with frozen semen |
author |
Drechmer, Jéssica |
author_facet |
Drechmer, Jéssica Basílio, Lucas Macêdo Santos Teixeira, Heitor Castro Alves Ramos, Alexandre Floriani Silva, Bianca Damiani Marques |
author_role |
author |
author2 |
Basílio, Lucas Macêdo Santos Teixeira, Heitor Castro Alves Ramos, Alexandre Floriani Silva, Bianca Damiani Marques |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Drechmer, Jéssica Basílio, Lucas Macêdo Santos Teixeira, Heitor Castro Alves Ramos, Alexandre Floriani Silva, Bianca Damiani Marques |
description |
This study aimed to evaluate the efficiency of two or three estrus synchronizations followed by artificial insemination (AI) by laparoscopy with frozen semen in sheep. Santa Inês sheep (n=147) were randomly distributed into two groups: Re-sync – 2FTAI (n=72) and Doppler – 3FTAI (n=75), synchronized with a short protocol associated with GnRH and AI by laparoscopy with frozen semen 50 h after removing the P4 device (D0). Two AIs were performed in the Re-sync group, with the start of the resynchronization protocol on D23 and gestational diagnosis on D30; the non-pregnant females were inseminated again. The sheep were resynchronized (D10) in the Doppler group and the gestation diagnosis was made early at 17 days using Doppler ultrasound. The open females were inseminated again, totaling three inseminations in 42 days. Early gestation diagnoses were confirmed at 30 days. Re-sync (29.16%) and Doppler (21.33%) were similar to each other in terms of cumulative gestation rate (P>0.05). The indicators of the non-gestation diagnosis technique at 17 days were sensitivity of 100%, specificity of 28%, positive predictive value of 21.3%, negative predictive value of 100%, and accuracy of 39.8%. Early diagnosis allowed sheep to be inseminated two to three times in the same period and was effective in diagnosing truly non-pregnant females. Therefore, estrus resynchronization associated with AI by laparoscopy using frozen semen can be applied in sheep, but a higher gestation rate could not be achieved with two or three inseminations at the end of the breeding season. |
publishDate |
2024 |
dc.date.none.fl_str_mv |
2024-01-16 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/vet/article/view/76929 |
url |
https://revistas.ufg.br/vet/article/view/76929 |
dc.language.iso.fl_str_mv |
por eng |
language |
por eng |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/vet/article/view/76929/40753 https://revistas.ufg.br/vet/article/view/76929/40754 https://revistas.ufg.br/vet/article/view/76929/40870 https://revistas.ufg.br/vet/article/view/76929/40871 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2024 Ciência Animal Brasileira / Brazilian Animal Science http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2024 Ciência Animal Brasileira / Brazilian Animal Science http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
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. 25 (2024): Publicação continua Ciência Animal Brasileira / Brazilian Animal Science; v. 25 (2024): Publicação continua 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 |
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1799874791330545664 |