Postpartum ovarian activity and uterine involution in crossbred dairy cattle
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por eng |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/17202 |
Resumo: | One hundred and sixty crossbred dairy cows were palpated every five days from 10 to 60 days postpartum to study postpartum uterine involution and ovarian activity. A complete involution was observed in 77.5% of the cows between 10 and 30 days postpartum. The mean interval from parturition to involution was 26.4 days, with a significant difference between primiparas (24.5 days) and pluriparas (28.3 days) cows. Season of the year and level of milk production did not affect the involution time. Fertility, measured by conception rate at first insemination and by the number of inseminations per conception, was not significantly influenced by the time of uterine involution. Ovarian activity was essentially absent up to 10 days postpartum. Yellow bodies or mature follicles were present in 49.3% of the cows palpated prior to 60 days postpartum. The intervals, parturition - first ovulation (29.9 days) and parturition-first estrus (53.3 days), measured to 60 and 100 days postpartum, respectively, was not affected by the season of year. However, the interval, parturition - conception, and the percentage of cows showing first postpartum estrus within a fixed interval were affected by season of year. A postpartum anestrus was observed in 35.8% of the cows. This period was significantly shorter for cow that calved in the summer than for those that calved in the winter. |
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Postpartum ovarian activity and uterine involution in crossbred dairy cattleInvolução uterina e atividade ovariana na vaca leiteira após o partoReproductive physiology; postpartum cow; crossbred dairy cattleFisiologia reprodutiva post-partum; bovinos leiteiros mestiçosOne hundred and sixty crossbred dairy cows were palpated every five days from 10 to 60 days postpartum to study postpartum uterine involution and ovarian activity. A complete involution was observed in 77.5% of the cows between 10 and 30 days postpartum. The mean interval from parturition to involution was 26.4 days, with a significant difference between primiparas (24.5 days) and pluriparas (28.3 days) cows. Season of the year and level of milk production did not affect the involution time. Fertility, measured by conception rate at first insemination and by the number of inseminations per conception, was not significantly influenced by the time of uterine involution. Ovarian activity was essentially absent up to 10 days postpartum. Yellow bodies or mature follicles were present in 49.3% of the cows palpated prior to 60 days postpartum. The intervals, parturition - first ovulation (29.9 days) and parturition-first estrus (53.3 days), measured to 60 and 100 days postpartum, respectively, was not affected by the season of year. However, the interval, parturition - conception, and the percentage of cows showing first postpartum estrus within a fixed interval were affected by season of year. A postpartum anestrus was observed in 35.8% of the cows. This period was significantly shorter for cow that calved in the summer than for those that calved in the winter.A involução uterina e a atividade ovariana post-partum foram estudadas em Itaguaí, RJ, por palpação retal feita até 60 dias após o parto, em 160 vacas leiteiras mestiças normais. Entre 10 e 30 dias após o parto, houve involução total do útero em 77,5% das vacas. O intervalo médio parto - involução uterina foi de 26,4 dias, variando significativamente se as vacas eram primíparas (24,5 dias) ou pluríparas (28,3 dias). As estações do ano e a produção de leite não afetaram o tempo de involução. A fertilidade não foi influenciada pela involução do útero, não havendo correlação entre ela e a percentagem de concepção na primeira inseminação ou o número de inseminações por concepção. A atividade ovariana foi praticamente ausente até 10 dias após o parto. Corpo amarelo ou folículo maduro foram palpáveis em 49,3% das vacas nos primeiros 60 dias post-partum. Os intervalos parto - primeira ovulação (29,9 dias) e parto - primeiro cio (53,3 dias) controlados até 60 e 100 dias, respectivamente, não foram alterados pelas estações do ano, sendo-o, porém, o intervalo parto - concepção e a taxa do primeiro cio post-partum. O anestro ocorreu em 35,8% dos animais, com período mais longo no inverno.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraAraújo, Paulo GraçaPizzelli, Gélio NogueiraCarvalho, Mauro Ribeiro deMeneguelli, Carlos Alberto2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/17202Pesquisa Agropecuaria Brasileira; v.9, n.7, 1974: Série Veterinária; 1-6Pesquisa Agropecuária Brasileira; v.9, n.7, 1974: Série Veterinária; 1-61678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporenghttps://seer.sct.embrapa.br/index.php/pab/article/view/17202/11519https://seer.sct.embrapa.br/index.php/pab/article/view/17202/11520info:eu-repo/semantics/openAccess2014-04-15T18:57:57Zoai:ojs.seer.sct.embrapa.br:article/17202Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T18:57:57Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Postpartum ovarian activity and uterine involution in crossbred dairy cattle Involução uterina e atividade ovariana na vaca leiteira após o parto |
title |
Postpartum ovarian activity and uterine involution in crossbred dairy cattle |
spellingShingle |
Postpartum ovarian activity and uterine involution in crossbred dairy cattle Araújo, Paulo Graça Reproductive physiology; postpartum cow; crossbred dairy cattle Fisiologia reprodutiva post-partum; bovinos leiteiros mestiços |
title_short |
Postpartum ovarian activity and uterine involution in crossbred dairy cattle |
title_full |
Postpartum ovarian activity and uterine involution in crossbred dairy cattle |
title_fullStr |
Postpartum ovarian activity and uterine involution in crossbred dairy cattle |
title_full_unstemmed |
Postpartum ovarian activity and uterine involution in crossbred dairy cattle |
title_sort |
Postpartum ovarian activity and uterine involution in crossbred dairy cattle |
author |
Araújo, Paulo Graça |
author_facet |
Araújo, Paulo Graça Pizzelli, Gélio Nogueira Carvalho, Mauro Ribeiro de Meneguelli, Carlos Alberto |
author_role |
author |
author2 |
Pizzelli, Gélio Nogueira Carvalho, Mauro Ribeiro de Meneguelli, Carlos Alberto |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Araújo, Paulo Graça Pizzelli, Gélio Nogueira Carvalho, Mauro Ribeiro de Meneguelli, Carlos Alberto |
dc.subject.por.fl_str_mv |
Reproductive physiology; postpartum cow; crossbred dairy cattle Fisiologia reprodutiva post-partum; bovinos leiteiros mestiços |
topic |
Reproductive physiology; postpartum cow; crossbred dairy cattle Fisiologia reprodutiva post-partum; bovinos leiteiros mestiços |
description |
One hundred and sixty crossbred dairy cows were palpated every five days from 10 to 60 days postpartum to study postpartum uterine involution and ovarian activity. A complete involution was observed in 77.5% of the cows between 10 and 30 days postpartum. The mean interval from parturition to involution was 26.4 days, with a significant difference between primiparas (24.5 days) and pluriparas (28.3 days) cows. Season of the year and level of milk production did not affect the involution time. Fertility, measured by conception rate at first insemination and by the number of inseminations per conception, was not significantly influenced by the time of uterine involution. Ovarian activity was essentially absent up to 10 days postpartum. Yellow bodies or mature follicles were present in 49.3% of the cows palpated prior to 60 days postpartum. The intervals, parturition - first ovulation (29.9 days) and parturition-first estrus (53.3 days), measured to 60 and 100 days postpartum, respectively, was not affected by the season of year. However, the interval, parturition - conception, and the percentage of cows showing first postpartum estrus within a fixed interval were affected by season of year. A postpartum anestrus was observed in 35.8% of the cows. This period was significantly shorter for cow that calved in the summer than for those that calved in the winter. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-15 |
dc.type.none.fl_str_mv |
|
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://seer.sct.embrapa.br/index.php/pab/article/view/17202 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/17202 |
dc.language.iso.fl_str_mv |
por eng |
language |
por eng |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/17202/11519 https://seer.sct.embrapa.br/index.php/pab/article/view/17202/11520 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.9, n.7, 1974: Série Veterinária; 1-6 Pesquisa Agropecuária Brasileira; v.9, n.7, 1974: Série Veterinária; 1-6 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416655207923712 |