Reproductive biology of the mare: oestrous cycle and ovulation time
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | , |
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/5665 |
Resumo: | Twenty one mares were used, 11 Pure breed (PSA) and 10 cross-breed Arabicus (CA) from 3 to 11 years old. The animals were teased daily. The heat was supervised by rectum palpation at first twice, and thereafter, three times a day until the end of estrus. Independent of estrus stage, all animals were examined three times a week. To detect the ovulation time, the mares were examined at 8:00 am, 4:00 pm and 11:00 pm, through the whole estrus period, to observe the ovarian and follicles size, sensibility and consistency. The mean length of oestrous cycle was 24.24 ± 6.00 days, with 7.50 ± 4.16 days to estrus and 17.53 ± 3.18 to diestrus. The ontset of estrus occurred more frequently at 12:00 pm than at 8:00 am or 4:00 pm. Ovulations occurred at night (75%) and 25% during the day. Ovulations were frequently uniform in the ovariums. In 85% of the cases the estrus signs finished 24 hours after ovulation. |
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Brazilian Journal of Veterinary Research and Animal Science |
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Reproductive biology of the mare: oestrous cycle and ovulation timeBiologia reprodutiva de éguas: estudo do ciclo estral e momento de ovulaçãoReproduçãoCiclo estralOvulaçãoÉguasReproductionOestrous cycleOvulationMaresTwenty one mares were used, 11 Pure breed (PSA) and 10 cross-breed Arabicus (CA) from 3 to 11 years old. The animals were teased daily. The heat was supervised by rectum palpation at first twice, and thereafter, three times a day until the end of estrus. Independent of estrus stage, all animals were examined three times a week. To detect the ovulation time, the mares were examined at 8:00 am, 4:00 pm and 11:00 pm, through the whole estrus period, to observe the ovarian and follicles size, sensibility and consistency. The mean length of oestrous cycle was 24.24 ± 6.00 days, with 7.50 ± 4.16 days to estrus and 17.53 ± 3.18 to diestrus. The ontset of estrus occurred more frequently at 12:00 pm than at 8:00 am or 4:00 pm. Ovulations occurred at night (75%) and 25% during the day. Ovulations were frequently uniform in the ovariums. In 85% of the cases the estrus signs finished 24 hours after ovulation.No presente estudo, foram utilizadas 21 éguas, das quais eram 11 Puros-Sangues Árabes (PSA) e 10 Cruza Árabes (CA), entre 3 e 11 anos de idade. Para identificação do estro (cio) utilizaram-se os métodos de rufiação e palpação retal, sendo que as éguas foram rufiadas 3 vezes ao dia até o final do estro para determinação de sua duração. Independente do estágio do ciclo, todos os animais foram examinados pelo menos 3 vezes por semana. No diagnóstico do momento de ovulação, as éguas foram examinadas às 8 h, 12 h e 16 h durante todo o período de estro, verificando-se as condições ovarianas e foliculares. A duração média do ciclo estral foi de 24,24 ± 6,00 dias com 7,50 ± 4,16 dias de estro. Observou-se que o início do estro foi mais freqüente às 12 h do que às 8 h ou 16 h e que as ovulações ocorreram 75% à noite, estando distribuídas de igual maneira nos dois ovários. Notou-se, também, que a fase estral terminou em 85% dos casos 24 horas após a ovulação.Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia1998-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/bjvras/article/view/566510.1590/S1413-95961998000100004Brazilian Journal of Veterinary Research and Animal Science; Vol. 35 Núm. 1 (1998); 25-28Brazilian Journal of Veterinary Research and Animal Science; Vol. 35 No. 1 (1998); 25-28Brazilian Journal of Veterinary Research and Animal Science; v. 35 n. 1 (1998); 25-28Brazilian Journal of Veterinary Research and Animal Science; V. 35 N. 1 (1998); 25-281678-44561413-9596reponame: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/5665/7196Romano, Marco AurélioMucciolo, Raul GastãoSilva, Antonio Emídio Dias Feliciano einfo:eu-repo/semantics/openAccess2020-06-23T04:46:45Zoai:revistas.usp.br:article/5665Revistahttps://www.revistas.usp.br/bjvrasPUBhttps://www.revistas.usp.br/bjvras/oaibjvras@usp.br1413-95961413-9596opendoar:https://www.revistas.usp.br/bjvras/index2023-01-12T16:42:16.145971Brazilian 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 |
Reproductive biology of the mare: oestrous cycle and ovulation time Biologia reprodutiva de éguas: estudo do ciclo estral e momento de ovulação |
title |
Reproductive biology of the mare: oestrous cycle and ovulation time |
spellingShingle |
Reproductive biology of the mare: oestrous cycle and ovulation time Romano, Marco Aurélio Reprodução Ciclo estral Ovulação Éguas Reproduction Oestrous cycle Ovulation Mares |
title_short |
Reproductive biology of the mare: oestrous cycle and ovulation time |
title_full |
Reproductive biology of the mare: oestrous cycle and ovulation time |
title_fullStr |
Reproductive biology of the mare: oestrous cycle and ovulation time |
title_full_unstemmed |
Reproductive biology of the mare: oestrous cycle and ovulation time |
title_sort |
Reproductive biology of the mare: oestrous cycle and ovulation time |
author |
Romano, Marco Aurélio |
author_facet |
Romano, Marco Aurélio Mucciolo, Raul Gastão Silva, Antonio Emídio Dias Feliciano e |
author_role |
author |
author2 |
Mucciolo, Raul Gastão Silva, Antonio Emídio Dias Feliciano e |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Romano, Marco Aurélio Mucciolo, Raul Gastão Silva, Antonio Emídio Dias Feliciano e |
dc.subject.por.fl_str_mv |
Reprodução Ciclo estral Ovulação Éguas Reproduction Oestrous cycle Ovulation Mares |
topic |
Reprodução Ciclo estral Ovulação Éguas Reproduction Oestrous cycle Ovulation Mares |
description |
Twenty one mares were used, 11 Pure breed (PSA) and 10 cross-breed Arabicus (CA) from 3 to 11 years old. The animals were teased daily. The heat was supervised by rectum palpation at first twice, and thereafter, three times a day until the end of estrus. Independent of estrus stage, all animals were examined three times a week. To detect the ovulation time, the mares were examined at 8:00 am, 4:00 pm and 11:00 pm, through the whole estrus period, to observe the ovarian and follicles size, sensibility and consistency. The mean length of oestrous cycle was 24.24 ± 6.00 days, with 7.50 ± 4.16 days to estrus and 17.53 ± 3.18 to diestrus. The ontset of estrus occurred more frequently at 12:00 pm than at 8:00 am or 4:00 pm. Ovulations occurred at night (75%) and 25% during the day. Ovulations were frequently uniform in the ovariums. In 85% of the cases the estrus signs finished 24 hours after ovulation. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998-01-01 |
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/5665 10.1590/S1413-95961998000100004 |
url |
https://www.revistas.usp.br/bjvras/article/view/5665 |
identifier_str_mv |
10.1590/S1413-95961998000100004 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/bjvras/article/view/5665/7196 |
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. 35 Núm. 1 (1998); 25-28 Brazilian Journal of Veterinary Research and Animal Science; Vol. 35 No. 1 (1998); 25-28 Brazilian Journal of Veterinary Research and Animal Science; v. 35 n. 1 (1998); 25-28 Brazilian Journal of Veterinary Research and Animal Science; V. 35 N. 1 (1998); 25-28 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 |
_version_ |
1797051554045362176 |