Equine pituitary extract obtained during summer improves follicular dynamics of mares during autumnal transition period
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Research, Society and Development |
Texto Completo: | https://rsdjournal.org/index.php/rsd/article/view/4730 |
Resumo: | To compare follicular dynamics after treatment with low doses of equine pituitary extract obtained during winter and summer and to study the relationship between follicular dynamic and environmental parameters, 21 mares were evaluated to follow follicular dynamic and ovulation, from the final of the spring transitional up to the beginning of autumnal transitional period. Mares were randomly designed to one of three treatments: Equine Pituitary Extract from summer (EPE-S), Equine Pituitary Extract from winter (EPE-W) or saline (Control). Treatments were repeated twice: March/2017, after autumnal equinox and April/2017. Temperature, humidity, solar radiation and hours/ light/day were recorded and Temperature Humidity Index (THI) was calculated. Pre-ovulatory follicles reached the greatest diameter (40.7 mm) in December (p<0.05), following the increase in light/hours/day. The smallest pre-ovulatory follicles were verified in February (34.6 mm) and March (35.0 mm) (p>0.05). After EPE, days for ovulation differed, as well as the diameter of pre-ovulatory follicles (p<0.05). EPE-W showed similar follicular dynamics as Control, ovulating smaller follicles (p<0.05) and later (p<0.05) than EPE-S. Temperature and solar radiation did not differ (p>0.05), but humidity and THI differed (p<0.05). THI was not correlated to the diameter of pre-ovulatory follicles (p=0.37), diameter of subordinate follicles (p=0.80), or number/ follicles per ovulatory wave (p=0.98). In conclusion, daylight duration influenced ovarian function; low doses of EPE-S improvede follicular growth and ovulation rate during autumnal transition period of mares; pre-ovulatory follicle diameter increased from the spring to summer, but the time required to reach ovulation decreased. |
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Equine pituitary extract obtained during summer improves follicular dynamics of mares during autumnal transition periodExtracto de pituitaria equina obtenido durante el verano mejora la dinámica folicular de las yeguas durante el período de transición otoñalExtrato de pituitária equina obtido durante o verão melhora a dinâmica folicular de éguas durante o período de transição de outonoEquine breeding seasonGonadotropinsTransitional anovulatory periodHormonal therapy.Estacionalidad reproductiva equinaGonadotrofinasPeríodo anovulatorio de transiciónTerapia hormonal.Estacionalidade reprodutiva equinaGonadotrofinasPeríodo de transição anovulatórioHormonioterapia.To compare follicular dynamics after treatment with low doses of equine pituitary extract obtained during winter and summer and to study the relationship between follicular dynamic and environmental parameters, 21 mares were evaluated to follow follicular dynamic and ovulation, from the final of the spring transitional up to the beginning of autumnal transitional period. Mares were randomly designed to one of three treatments: Equine Pituitary Extract from summer (EPE-S), Equine Pituitary Extract from winter (EPE-W) or saline (Control). Treatments were repeated twice: March/2017, after autumnal equinox and April/2017. Temperature, humidity, solar radiation and hours/ light/day were recorded and Temperature Humidity Index (THI) was calculated. Pre-ovulatory follicles reached the greatest diameter (40.7 mm) in December (p<0.05), following the increase in light/hours/day. The smallest pre-ovulatory follicles were verified in February (34.6 mm) and March (35.0 mm) (p>0.05). After EPE, days for ovulation differed, as well as the diameter of pre-ovulatory follicles (p<0.05). EPE-W showed similar follicular dynamics as Control, ovulating smaller follicles (p<0.05) and later (p<0.05) than EPE-S. Temperature and solar radiation did not differ (p>0.05), but humidity and THI differed (p<0.05). THI was not correlated to the diameter of pre-ovulatory follicles (p=0.37), diameter of subordinate follicles (p=0.80), or number/ follicles per ovulatory wave (p=0.98). In conclusion, daylight duration influenced ovarian function; low doses of EPE-S improvede follicular growth and ovulation rate during autumnal transition period of mares; pre-ovulatory follicle diameter increased from the spring to summer, but the time required to reach ovulation decreased.Para comparar la dinámica folicular usando dosis bajas de extracto de hipófisis equina obtenidas durante el invierno y verano y estudiar la relación entre la dinámica folicular y parámetros ambientales, se evaluaron 21 yeguas para seguir la dinámica folicular y ovulación, desde el final de la transición de primavera hasta el comienzo del período de transición otoñal. Las yeguas fueron diseñadas para los tratamientos: Extracto de pituitaria equina-verano (EPE-S), Extracto de pituitaria equina-invierno (EPE-W), salino (Control). Los tratamientos se repitieron em marzo/2017 (equinoccio de otoño) y abril/2017. Se registraron la temperatura, humedad, radiación solar y horas/luz/día y se calculó el Índice de Temperatura y Humedad (THI). Los folículos preovulatorios fueram mayores (40,7 mm) en diciembre (p<0,05), tras el aumento luz/horas/día. Folículos preovulatorios pequeños se verificaron en febrero (34,6 mm) y marzo (35,0 mm) (p>0,05). Después de la EPE, días para la ovulación y diámetro de los folículos preovulatorios difirieron (p<0,05). Yeguas EPE-W mostró dinámica folicular similar al Control, ovulando folículos pequeños (p<0.05) y más tarde (p<0.05) que EPE-S. La temperatura y radiación solar no difirieron (p>0.05); humedad y el THI sí (p<0.05). El THI no se correlacionó con el diámetro de los folículos preovulatorios (p=0,37), diámetro de folículos subordinados (p=0,80), número de folículos/onda/ovulatoria (p=0,98). En conclusión, la duración del día influyó la función ovárica; bajas dosis de EPE-S mejoran el crecimiento folicular y tasa de ovulación durante el período de transición otoñal; el diámetro de los folículos preovulatorios aumentó de la primavera al verano, pero el tiempo necesario para llegar a la ovulación disminuyó.Para comparar a dinâmica folicular após o tratamento com baixas doses de extrato pituitário eqüino obtido durante o inverno e verão e estudar a relação entre dinâmica folicular e parâmetros ambientais, foram avaliadas 21 éguas acompanhando-se a dinâmica folicular e ovulação, do final da transição de primavera até o início da transição outonal. As éguas foram designadas para um dos tratamentos: Extrato Pituitário Eqüino verão (EPE-S), Extrato Pituitário Eqüino inverno (EPE-W), salina (Controle). Os tratamentos foram repetidos em Março/2017, após o equinócio outonal e Abril/2017. Temperatura, umidade, radiação solar e horas/luz/dia foram registradas e o Índice de Umidade e Temperatura (THI) foi calculado. Os folículos pré-ovulatórios atingiram o maior diâmetro (40,7 mm) em dezembro (p<0,05), após o aumento de luz/horas/dia. Os menores folículos pré-ovulatórios foram verificados em fevereiro (34,6mm) e março (35,0mm) (p>0,05). Após a EPE, os dias para ovulação diferiram, assim como o diâmetro dos folículos pré-ovulatórios (p<0,05). Éguas EPE-W apresentaram dinâmica folicular semelhante às Controle, ovulando folículos menores (p<0,05) e mais tarde (p<0,05) que éguas EPE-S. A temperatura e radiação solar não diferiram (p>0,05), mas a umidade e o THI sim (p<0,05). O THI não se correlacionou com o diâmetro dos folículos pré-ovulatórios (p=0,37), diâmetro dos folículos subordinados (p=0,80), ou número/folículos/onda ovulatória (p=0,98). Em conclusão, a duração do dia influenciou a função ovariana; baixas doses de EPE-S melhoram o crescimento folicular e taxa de ovulação na transição outonal; o diâmetro dos folículos pré-ovulatórios aumentou da primavera para o verão, mas o tempo necessário para a ovulação diminuiu. Research, Society and Development2020-06-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/473010.33448/rsd-v9i7.4730Research, Society and Development; Vol. 9 No. 7; e751974730Research, Society and Development; Vol. 9 Núm. 7; e751974730Research, Society and Development; v. 9 n. 7; e7519747302525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIenghttps://rsdjournal.org/index.php/rsd/article/view/4730/4159Copyright (c) 2020 Edmee Aparecida Fleury Curado, Rodrigo Arruda Oliveira, Isabelle Matos Macedo, Joel Phillipe Costa e Souza, Thais Poltronieri dos Santos, Carolina Silva Ramos, Morgana de Araujo Magalhães, Maria Lucia Gambariniinfo:eu-repo/semantics/openAccessCurado, Edmee Aparecida FleuryOliveira, Rodrigo Arruda deMacedo, Isabelle MatosSouza, Joel Phillipe Costa eSantos, Thais Poltronieri dosRamos, Carolina SilvaMagalhães, Morgana de AraujoGambarini, Maria Lucia2020-08-20T18:05:03Zoai:ojs.pkp.sfu.ca:article/4730Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:28:29.024555Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false |
dc.title.none.fl_str_mv |
Equine pituitary extract obtained during summer improves follicular dynamics of mares during autumnal transition period Extracto de pituitaria equina obtenido durante el verano mejora la dinámica folicular de las yeguas durante el período de transición otoñal Extrato de pituitária equina obtido durante o verão melhora a dinâmica folicular de éguas durante o período de transição de outono |
title |
Equine pituitary extract obtained during summer improves follicular dynamics of mares during autumnal transition period |
spellingShingle |
Equine pituitary extract obtained during summer improves follicular dynamics of mares during autumnal transition period Curado, Edmee Aparecida Fleury Equine breeding season Gonadotropins Transitional anovulatory period Hormonal therapy. Estacionalidad reproductiva equina Gonadotrofinas Período anovulatorio de transición Terapia hormonal. Estacionalidade reprodutiva equina Gonadotrofinas Período de transição anovulatório Hormonioterapia. |
title_short |
Equine pituitary extract obtained during summer improves follicular dynamics of mares during autumnal transition period |
title_full |
Equine pituitary extract obtained during summer improves follicular dynamics of mares during autumnal transition period |
title_fullStr |
Equine pituitary extract obtained during summer improves follicular dynamics of mares during autumnal transition period |
title_full_unstemmed |
Equine pituitary extract obtained during summer improves follicular dynamics of mares during autumnal transition period |
title_sort |
Equine pituitary extract obtained during summer improves follicular dynamics of mares during autumnal transition period |
author |
Curado, Edmee Aparecida Fleury |
author_facet |
Curado, Edmee Aparecida Fleury Oliveira, Rodrigo Arruda de Macedo, Isabelle Matos Souza, Joel Phillipe Costa e Santos, Thais Poltronieri dos Ramos, Carolina Silva Magalhães, Morgana de Araujo Gambarini, Maria Lucia |
author_role |
author |
author2 |
Oliveira, Rodrigo Arruda de Macedo, Isabelle Matos Souza, Joel Phillipe Costa e Santos, Thais Poltronieri dos Ramos, Carolina Silva Magalhães, Morgana de Araujo Gambarini, Maria Lucia |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Curado, Edmee Aparecida Fleury Oliveira, Rodrigo Arruda de Macedo, Isabelle Matos Souza, Joel Phillipe Costa e Santos, Thais Poltronieri dos Ramos, Carolina Silva Magalhães, Morgana de Araujo Gambarini, Maria Lucia |
dc.subject.por.fl_str_mv |
Equine breeding season Gonadotropins Transitional anovulatory period Hormonal therapy. Estacionalidad reproductiva equina Gonadotrofinas Período anovulatorio de transición Terapia hormonal. Estacionalidade reprodutiva equina Gonadotrofinas Período de transição anovulatório Hormonioterapia. |
topic |
Equine breeding season Gonadotropins Transitional anovulatory period Hormonal therapy. Estacionalidad reproductiva equina Gonadotrofinas Período anovulatorio de transición Terapia hormonal. Estacionalidade reprodutiva equina Gonadotrofinas Período de transição anovulatório Hormonioterapia. |
description |
To compare follicular dynamics after treatment with low doses of equine pituitary extract obtained during winter and summer and to study the relationship between follicular dynamic and environmental parameters, 21 mares were evaluated to follow follicular dynamic and ovulation, from the final of the spring transitional up to the beginning of autumnal transitional period. Mares were randomly designed to one of three treatments: Equine Pituitary Extract from summer (EPE-S), Equine Pituitary Extract from winter (EPE-W) or saline (Control). Treatments were repeated twice: March/2017, after autumnal equinox and April/2017. Temperature, humidity, solar radiation and hours/ light/day were recorded and Temperature Humidity Index (THI) was calculated. Pre-ovulatory follicles reached the greatest diameter (40.7 mm) in December (p<0.05), following the increase in light/hours/day. The smallest pre-ovulatory follicles were verified in February (34.6 mm) and March (35.0 mm) (p>0.05). After EPE, days for ovulation differed, as well as the diameter of pre-ovulatory follicles (p<0.05). EPE-W showed similar follicular dynamics as Control, ovulating smaller follicles (p<0.05) and later (p<0.05) than EPE-S. Temperature and solar radiation did not differ (p>0.05), but humidity and THI differed (p<0.05). THI was not correlated to the diameter of pre-ovulatory follicles (p=0.37), diameter of subordinate follicles (p=0.80), or number/ follicles per ovulatory wave (p=0.98). In conclusion, daylight duration influenced ovarian function; low doses of EPE-S improvede follicular growth and ovulation rate during autumnal transition period of mares; pre-ovulatory follicle diameter increased from the spring to summer, but the time required to reach ovulation decreased. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-06-11 |
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://rsdjournal.org/index.php/rsd/article/view/4730 10.33448/rsd-v9i7.4730 |
url |
https://rsdjournal.org/index.php/rsd/article/view/4730 |
identifier_str_mv |
10.33448/rsd-v9i7.4730 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://rsdjournal.org/index.php/rsd/article/view/4730/4159 |
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 |
Research, Society and Development |
publisher.none.fl_str_mv |
Research, Society and Development |
dc.source.none.fl_str_mv |
Research, Society and Development; Vol. 9 No. 7; e751974730 Research, Society and Development; Vol. 9 Núm. 7; e751974730 Research, Society and Development; v. 9 n. 7; e751974730 2525-3409 reponame:Research, Society and Development instname:Universidade Federal de Itajubá (UNIFEI) instacron:UNIFEI |
instname_str |
Universidade Federal de Itajubá (UNIFEI) |
instacron_str |
UNIFEI |
institution |
UNIFEI |
reponame_str |
Research, Society and Development |
collection |
Research, Society and Development |
repository.name.fl_str_mv |
Research, Society and Development - Universidade Federal de Itajubá (UNIFEI) |
repository.mail.fl_str_mv |
rsd.articles@gmail.com |
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1797052778591289344 |