Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropins

Detalhes bibliográficos
Autor(a) principal: Vianna, Wagner Loesch
Data de Publicação: 2006
Outros Autores: Pinese, Marcos Eduardo, Rosseto, Aline de Campos, Oliveira, Cláudio Alvarenga de, Moretti, Aníbal de Sant'Anna
Tipo de documento: Artigo
Idioma: por
Título da fonte: Brazilian Journal of Veterinary Research and Animal Science
Texto Completo: https://www.revistas.usp.br/bjvras/article/view/26532
Resumo: The utilization of exogenous gonadotropins in the puberty induction and estrus/ovulation synchronization is a management that influence positively gilts handle, to the better effectiveness and economic inclusion of gilts in the Intensive Swine Production System herd. However, few researches have been developed to evaluate the subsequent estrus synchronization after puberty induction. Thus, the aim of this study was to verify the subsequent estrus synchronization after the hormonal puberty induction and to evaluate the inducted and the following one estrus characteristics. Sixty six prepubertal gilts had their puberty inducted by a hormonal combination using gonadotropins (eCG and LH) at 145 days old, in average. A total of 35 (52,03%) of the 66 initially gilts showed estrus up to seven days after LH administration, and 40 (60,60%) had the subsequent estrus synchronized (synchronization was defined as the gilts which showed estrus up to day 25 after LH administration). Twenty six gilts (39,39%) showed the first and second estrus. The 26 (39,39%) remaining gilts that didn't show the second estrus synchronized were slaughtered, which 15 presented corpus albicans and/or corpora lutea and 11 were considered immature because they didn't present any structure mentioned above in the ovaries. There was no significant difference between the puberty estrus duration and the subsequent estrus duration (P>;0,05), neither their dispersion.
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spelling Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropinsIndução da puberdade e sincronização do cio subsequente em leitoas pré-púberes utilizando gonadotrofinas exógenasGonadotrofinaLeitoaPuberdadeSincronizaçãoGiltGonadotropinPubertySynchronizationThe utilization of exogenous gonadotropins in the puberty induction and estrus/ovulation synchronization is a management that influence positively gilts handle, to the better effectiveness and economic inclusion of gilts in the Intensive Swine Production System herd. However, few researches have been developed to evaluate the subsequent estrus synchronization after puberty induction. Thus, the aim of this study was to verify the subsequent estrus synchronization after the hormonal puberty induction and to evaluate the inducted and the following one estrus characteristics. Sixty six prepubertal gilts had their puberty inducted by a hormonal combination using gonadotropins (eCG and LH) at 145 days old, in average. A total of 35 (52,03%) of the 66 initially gilts showed estrus up to seven days after LH administration, and 40 (60,60%) had the subsequent estrus synchronized (synchronization was defined as the gilts which showed estrus up to day 25 after LH administration). Twenty six gilts (39,39%) showed the first and second estrus. The 26 (39,39%) remaining gilts that didn't show the second estrus synchronized were slaughtered, which 15 presented corpus albicans and/or corpora lutea and 11 were considered immature because they didn't present any structure mentioned above in the ovaries. There was no significant difference between the puberty estrus duration and the subsequent estrus duration (P>;0,05), neither their dispersion.A utilização de gonadotrofinas exógenas na indução da puberdade e sincronização do estro e ovulação é uma prática que influencia positivamente no manejo das marrãs, para a mais efetiva e econômica inclusão no plantel de matrizes em Sistemas Intensivos de Produção de Suínos. No entanto, poucos estudos têm sido desenvolvidos com a finalidade de avaliar o grau de sincronização do estro seguinte à indução da puberdade. Assim sendo, o objetivo do presente estudo foi, justamente, o de verificar a taxa de sincronização do estro subseqüente à puberdade induzida hormonalmente, e a comparação das características dos estros, induzido e subseqüente a este. Sessenta e seis leitoas pré-púberes tiveram a puberdade induzida através de combinação hormonal utilizando gonadotrofinas (eCG e LH) aos 145 dias de idade em média. Das 66 fêmeas que iniciaram o experimento, 35 (53,03%) apresentaram cio até sete dias após a aplicação do LH, e 40 (60,60%) das 66 fêmeas tiveram o estro subseqüente sincronizado, ou seja, até o 25º dia após a aplicação do LH. Vinte e seis (39,39%) fêmeas manifestaram o primeiro e segundo cios. As 26 (39,39%) leitoas que não manifestaram o 2º cio de maneira sincronizada foram abatidas, sendo que 15 apresentaram corpos lúteos e/ou corpos albicans e 11 não apresentaram as estruturas mencionadas anteriormente, sendo consideradas imaturas. Não houve diferença significativa da duração do cio na puberdade com o cio subseqüente (P>;0,05), tampouco da dispersão dos mesmos.Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia2006-12-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/bjvras/article/view/2653210.11606/issn.1678-4456.bjvras.2006.26532Brazilian Journal of Veterinary Research and Animal Science; Vol. 43 (2006): Suplemento; 28-32Brazilian Journal of Veterinary Research and Animal Science; Vol. 43 (2006): Suplemento; 28-32Brazilian Journal of Veterinary Research and Animal Science; v. 43 (2006): Suplemento; 28-32Brazilian Journal of Veterinary Research and Animal Science; V. 43 (2006): Suplemento; 28-321678-44561413-9596reponame:Brazilian Journal of Veterinary Research and Animal Scienceinstname:Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)instacron:USPporhttps://www.revistas.usp.br/bjvras/article/view/26532/28315Vianna, Wagner LoeschPinese, Marcos EduardoRosseto, Aline de CamposOliveira, Cláudio Alvarenga deMoretti, Aníbal de Sant'Annainfo:eu-repo/semantics/openAccess2020-06-23T04:16:11Zoai:revistas.usp.br:article/26532Revistahttps://www.revistas.usp.br/bjvrasPUBhttps://www.revistas.usp.br/bjvras/oaibjvras@usp.br1413-95961413-9596opendoar:https://www.revistas.usp.br/bjvras/index2023-01-12T16:42:48.585517Brazilian Journal of Veterinary Research and Animal Science - Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)false
dc.title.none.fl_str_mv Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropins
Indução da puberdade e sincronização do cio subsequente em leitoas pré-púberes utilizando gonadotrofinas exógenas
title Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropins
spellingShingle Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropins
Vianna, Wagner Loesch
Gonadotrofina
Leitoa
Puberdade
Sincronização
Gilt
Gonadotropin
Puberty
Synchronization
title_short Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropins
title_full Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropins
title_fullStr Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropins
title_full_unstemmed Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropins
title_sort Induction of puberty and following estrus synchronization in prepubertal gilts using exogenous gonadotropins
author Vianna, Wagner Loesch
author_facet Vianna, Wagner Loesch
Pinese, Marcos Eduardo
Rosseto, Aline de Campos
Oliveira, Cláudio Alvarenga de
Moretti, Aníbal de Sant'Anna
author_role author
author2 Pinese, Marcos Eduardo
Rosseto, Aline de Campos
Oliveira, Cláudio Alvarenga de
Moretti, Aníbal de Sant'Anna
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Vianna, Wagner Loesch
Pinese, Marcos Eduardo
Rosseto, Aline de Campos
Oliveira, Cláudio Alvarenga de
Moretti, Aníbal de Sant'Anna
dc.subject.por.fl_str_mv Gonadotrofina
Leitoa
Puberdade
Sincronização
Gilt
Gonadotropin
Puberty
Synchronization
topic Gonadotrofina
Leitoa
Puberdade
Sincronização
Gilt
Gonadotropin
Puberty
Synchronization
description The utilization of exogenous gonadotropins in the puberty induction and estrus/ovulation synchronization is a management that influence positively gilts handle, to the better effectiveness and economic inclusion of gilts in the Intensive Swine Production System herd. However, few researches have been developed to evaluate the subsequent estrus synchronization after puberty induction. Thus, the aim of this study was to verify the subsequent estrus synchronization after the hormonal puberty induction and to evaluate the inducted and the following one estrus characteristics. Sixty six prepubertal gilts had their puberty inducted by a hormonal combination using gonadotropins (eCG and LH) at 145 days old, in average. A total of 35 (52,03%) of the 66 initially gilts showed estrus up to seven days after LH administration, and 40 (60,60%) had the subsequent estrus synchronized (synchronization was defined as the gilts which showed estrus up to day 25 after LH administration). Twenty six gilts (39,39%) showed the first and second estrus. The 26 (39,39%) remaining gilts that didn't show the second estrus synchronized were slaughtered, which 15 presented corpus albicans and/or corpora lutea and 11 were considered immature because they didn't present any structure mentioned above in the ovaries. There was no significant difference between the puberty estrus duration and the subsequent estrus duration (P>;0,05), neither their dispersion.
publishDate 2006
dc.date.none.fl_str_mv 2006-12-03
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://www.revistas.usp.br/bjvras/article/view/26532
10.11606/issn.1678-4456.bjvras.2006.26532
url https://www.revistas.usp.br/bjvras/article/view/26532
identifier_str_mv 10.11606/issn.1678-4456.bjvras.2006.26532
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://www.revistas.usp.br/bjvras/article/view/26532/28315
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia
publisher.none.fl_str_mv Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia
dc.source.none.fl_str_mv Brazilian Journal of Veterinary Research and Animal Science; Vol. 43 (2006): Suplemento; 28-32
Brazilian Journal of Veterinary Research and Animal Science; Vol. 43 (2006): Suplemento; 28-32
Brazilian Journal of Veterinary Research and Animal Science; v. 43 (2006): Suplemento; 28-32
Brazilian Journal of Veterinary Research and Animal Science; V. 43 (2006): Suplemento; 28-32
1678-4456
1413-9596
reponame:Brazilian Journal of Veterinary Research and Animal Science
instname:Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)
instacron:USP
instname_str Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)
instacron_str USP
institution USP
reponame_str Brazilian Journal of Veterinary Research and Animal Science
collection Brazilian Journal of Veterinary Research and Animal Science
repository.name.fl_str_mv Brazilian Journal of Veterinary Research and Animal Science - Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)
repository.mail.fl_str_mv bjvras@usp.br
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