Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes

Detalhes bibliográficos
Autor(a) principal: Vergani, Gabriel Brun [UNESP]
Data de Publicação: 2020
Outros Autores: Fonseca, Jeferson Ferreira da, Trevizan, Juliane Teramachi [UNESP], Amaral Pereira, Veronica Schinaider do, Garcia, Alexandre Rossetto, Esteves, Sergio Novita, Brandao, Felipe Zandonadi, Goncalves Souza-Fabjan, Joanna Maria, Franco Oliveira, Maria Emilia [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.anireprosci.2020.106644
http://hdl.handle.net/11449/208960
Resumo: This study was conducted in ewes to assess effects of human chorionic gonadotropin (hCG) administration after imposing an estrous induction treatment regimen. Ewes (n = 115) were treated with a 60 mg medroxyprogesterone-intravaginal-sponge for 6 d plus 200 IU of equine chorionic gonadotmpin (eCG) im and 37.5 mu g d-cloprostenol im 36 h before sponge removal (Day 0). After natural mating, ewes having at least one corpus luteum (CL; n = 108) were administered either 1 mL of saline (G-Control; n = 53) or 300 IU of hCG (G-hCG; n = 55) on Day 7.5 after sponge removal (Day 0). Ovarian ultrasonography and blood collection were performed on Days 7.5, 13.5, 17.5, 21.5, and 30.5. Accessory CL (aCL) were observed in 81.5 % (G-hCG) and 0.0 % (G-Control) of ewes (P = 0.0001). Diameter, area, and volume of luteal tissue were greater (P < 0.05) in G-hCG from Day 13.5 to 30.5. Progesterone (P-4) concentrations were greater (P < 0.05) on Days 13.5, 17.5, 21.5 and 30.5 for ewes of the G-hCG group. Pregnancy percentage was similar (P = 0.25) between groups [47.1 % (G-control) compared with 60.0 % (G-hCG)], although total number of lambs produced by estrous synchronized ewes was greater (P = 0.005) in ewes of the G-hCG group (90.9 % compared with 66.0 %). In conclusion, hCG administration 7.5 days after sponge removal from Morada Nova ewes during the non-breeding season is an effective treatment to induce aCL formation, improve luteal tissue biometry and P4 concentrations, and to enhance the total number of lambs born.
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spelling Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewesAccessory corpora luteahCGLuteal vascularizationLuteal blood flowOvarian ultrasonographyProgesteroneThis study was conducted in ewes to assess effects of human chorionic gonadotropin (hCG) administration after imposing an estrous induction treatment regimen. Ewes (n = 115) were treated with a 60 mg medroxyprogesterone-intravaginal-sponge for 6 d plus 200 IU of equine chorionic gonadotmpin (eCG) im and 37.5 mu g d-cloprostenol im 36 h before sponge removal (Day 0). After natural mating, ewes having at least one corpus luteum (CL; n = 108) were administered either 1 mL of saline (G-Control; n = 53) or 300 IU of hCG (G-hCG; n = 55) on Day 7.5 after sponge removal (Day 0). Ovarian ultrasonography and blood collection were performed on Days 7.5, 13.5, 17.5, 21.5, and 30.5. Accessory CL (aCL) were observed in 81.5 % (G-hCG) and 0.0 % (G-Control) of ewes (P = 0.0001). Diameter, area, and volume of luteal tissue were greater (P < 0.05) in G-hCG from Day 13.5 to 30.5. Progesterone (P-4) concentrations were greater (P < 0.05) on Days 13.5, 17.5, 21.5 and 30.5 for ewes of the G-hCG group. Pregnancy percentage was similar (P = 0.25) between groups [47.1 % (G-control) compared with 60.0 % (G-hCG)], although total number of lambs produced by estrous synchronized ewes was greater (P = 0.005) in ewes of the G-hCG group (90.9 % compared with 66.0 %). In conclusion, hCG administration 7.5 days after sponge removal from Morada Nova ewes during the non-breeding season is an effective treatment to induce aCL formation, improve luteal tissue biometry and P4 concentrations, and to enhance the total number of lambs born.EmbrapaSao Paulo State Univ, Sch Agr & Vet Sci, Dept Pathobiol & Vet Theriogenol, Jaboticabal, SP, BrazilEmbrapa Caprinos & Ovinos, Rodovia MG 133,Km 42, BR-36155000 Coronel Pacheco, MG, BrazilUniv Fed Vicosa, Dept Vet, Av Peter Henry Rolfs S-N, BR-36570000 Vicosa, MG, BrazilEmbrapa Pecuaria Sudeste, Rodovia Washington Luiz,Km 234 S-N, BR-13560970 Sao Carlos, SP, BrazilUniv Fed Fluminense, Fac Vet, Rua Vital Brasil Filho 64, BR-24230340 Niteroi, RJ, BrazilSao Paulo State Univ, Sch Agr & Vet Sci, Dept Pathobiol & Vet Theriogenol, Jaboticabal, SP, BrazilEmbrapa: 22.13.06.026.00.06Elsevier B.V.Universidade Estadual Paulista (Unesp)Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Federal de Viçosa (UFV)Universidade Federal Fluminense (UFF)Vergani, Gabriel Brun [UNESP]Fonseca, Jeferson Ferreira daTrevizan, Juliane Teramachi [UNESP]Amaral Pereira, Veronica Schinaider doGarcia, Alexandre RossettoEsteves, Sergio NovitaBrandao, Felipe ZandonadiGoncalves Souza-Fabjan, Joanna MariaFranco Oliveira, Maria Emilia [UNESP]2021-06-25T11:44:25Z2021-06-25T11:44:25Z2020-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10http://dx.doi.org/10.1016/j.anireprosci.2020.106644Animal Reproduction Science. Amsterdam: Elsevier, v. 223, 10 p., 2020.0378-4320http://hdl.handle.net/11449/20896010.1016/j.anireprosci.2020.106644WOS:000593091900016Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnimal Reproduction Scienceinfo:eu-repo/semantics/openAccess2021-10-23T19:23:25Zoai:repositorio.unesp.br:11449/208960Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:37:32.856124Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes
title Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes
spellingShingle Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes
Vergani, Gabriel Brun [UNESP]
Accessory corpora lutea
hCG
Luteal vascularization
Luteal blood flow
Ovarian ultrasonography
Progesterone
title_short Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes
title_full Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes
title_fullStr Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes
title_full_unstemmed Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes
title_sort Luteotropic effects of human chorionic gonadotropin administered 7.5 days after synchronous estrous induction in Morada Nova ewes
author Vergani, Gabriel Brun [UNESP]
author_facet Vergani, Gabriel Brun [UNESP]
Fonseca, Jeferson Ferreira da
Trevizan, Juliane Teramachi [UNESP]
Amaral Pereira, Veronica Schinaider do
Garcia, Alexandre Rossetto
Esteves, Sergio Novita
Brandao, Felipe Zandonadi
Goncalves Souza-Fabjan, Joanna Maria
Franco Oliveira, Maria Emilia [UNESP]
author_role author
author2 Fonseca, Jeferson Ferreira da
Trevizan, Juliane Teramachi [UNESP]
Amaral Pereira, Veronica Schinaider do
Garcia, Alexandre Rossetto
Esteves, Sergio Novita
Brandao, Felipe Zandonadi
Goncalves Souza-Fabjan, Joanna Maria
Franco Oliveira, Maria Emilia [UNESP]
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Universidade Federal de Viçosa (UFV)
Universidade Federal Fluminense (UFF)
dc.contributor.author.fl_str_mv Vergani, Gabriel Brun [UNESP]
Fonseca, Jeferson Ferreira da
Trevizan, Juliane Teramachi [UNESP]
Amaral Pereira, Veronica Schinaider do
Garcia, Alexandre Rossetto
Esteves, Sergio Novita
Brandao, Felipe Zandonadi
Goncalves Souza-Fabjan, Joanna Maria
Franco Oliveira, Maria Emilia [UNESP]
dc.subject.por.fl_str_mv Accessory corpora lutea
hCG
Luteal vascularization
Luteal blood flow
Ovarian ultrasonography
Progesterone
topic Accessory corpora lutea
hCG
Luteal vascularization
Luteal blood flow
Ovarian ultrasonography
Progesterone
description This study was conducted in ewes to assess effects of human chorionic gonadotropin (hCG) administration after imposing an estrous induction treatment regimen. Ewes (n = 115) were treated with a 60 mg medroxyprogesterone-intravaginal-sponge for 6 d plus 200 IU of equine chorionic gonadotmpin (eCG) im and 37.5 mu g d-cloprostenol im 36 h before sponge removal (Day 0). After natural mating, ewes having at least one corpus luteum (CL; n = 108) were administered either 1 mL of saline (G-Control; n = 53) or 300 IU of hCG (G-hCG; n = 55) on Day 7.5 after sponge removal (Day 0). Ovarian ultrasonography and blood collection were performed on Days 7.5, 13.5, 17.5, 21.5, and 30.5. Accessory CL (aCL) were observed in 81.5 % (G-hCG) and 0.0 % (G-Control) of ewes (P = 0.0001). Diameter, area, and volume of luteal tissue were greater (P < 0.05) in G-hCG from Day 13.5 to 30.5. Progesterone (P-4) concentrations were greater (P < 0.05) on Days 13.5, 17.5, 21.5 and 30.5 for ewes of the G-hCG group. Pregnancy percentage was similar (P = 0.25) between groups [47.1 % (G-control) compared with 60.0 % (G-hCG)], although total number of lambs produced by estrous synchronized ewes was greater (P = 0.005) in ewes of the G-hCG group (90.9 % compared with 66.0 %). In conclusion, hCG administration 7.5 days after sponge removal from Morada Nova ewes during the non-breeding season is an effective treatment to induce aCL formation, improve luteal tissue biometry and P4 concentrations, and to enhance the total number of lambs born.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-01
2021-06-25T11:44:25Z
2021-06-25T11:44:25Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.anireprosci.2020.106644
Animal Reproduction Science. Amsterdam: Elsevier, v. 223, 10 p., 2020.
0378-4320
http://hdl.handle.net/11449/208960
10.1016/j.anireprosci.2020.106644
WOS:000593091900016
url http://dx.doi.org/10.1016/j.anireprosci.2020.106644
http://hdl.handle.net/11449/208960
identifier_str_mv Animal Reproduction Science. Amsterdam: Elsevier, v. 223, 10 p., 2020.
0378-4320
10.1016/j.anireprosci.2020.106644
WOS:000593091900016
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Animal Reproduction Science
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 10
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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