Comparison of three doses of estradiol benzoate for synchronization of follicular wave emergence in suckled Bos indicus beef cows
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1984-3143-AR2021-0016 http://hdl.handle.net/11449/231506 |
Resumo: | We aimed to compare the effect of three estradiol benzoate (EB) doses on follicular wave emergence (FWE) and dominant follicle growth of suckled Nelore cows submitted to TAI (D0). On a random day of estrous cycle (D−10), multiparous (MULT; n=36) and primiparous (PRIM; n=20) suckled Nelore cows received an intravaginal progesterone (P4) device and were assigned in three groups. Cows in the EB-1 (n=20), EB-1.5 (n=15) or EB-2 (n=21) groups received, respectively, an im treatment with 1, 1.5 or 2 mg EB. A subgroup (n=10-13 cows/group) were subject to daily ovarian evaluations from D−10 to D0. On D−2, P4 devices were removed, and all cows received the same treatment: 1 mg estradiol cypionate,0.53 mg sodium cloprostenol, and 300 IU eCG. Statistical analyses were performed considering only the= main effects of treatment group and parity order. The proportion of cows with a synchronized FWE and the moment of the FWE did not differ (p>0.05) among the treatment groups (overall: 80% [28/35] and 4.1 ± 0.4 days); however, the FWE occurred earlier (p=0.007) in MULT (3.8 ± 0.2 days) than PRIM (5.1 ± 0.4) cows. The proportion of animals detected in estrus was greater (86% [31/36] vs. 70% [14/20]; p=0.02) and the dominant follicle was larger on D−2 (9.7 ± 0.3 mm vs. 7.8 ± 0.7 mm; p=0.006) and D0 (11.9 ± 0.4 mm vs. 10 ± 0.5 mm; p=0.008) in MULT than PRIM cows. In conclusion, the three EB doses presented similar efficiency to synchronize the FWE in suckled Nelore cows. Moreover, a delayed FWE and smaller dominant follicle is observed in PRIM cows, contributing to the reduced reproductive performance in this parity category when using similar TAI protocols of MULT cows |
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Comparison of three doses of estradiol benzoate for synchronization of follicular wave emergence in suckled Bos indicus beef cowsBos indicuscattleestradiol benzoatefollicular dynamicsmultiparousprimiparousWe aimed to compare the effect of three estradiol benzoate (EB) doses on follicular wave emergence (FWE) and dominant follicle growth of suckled Nelore cows submitted to TAI (D0). On a random day of estrous cycle (D−10), multiparous (MULT; n=36) and primiparous (PRIM; n=20) suckled Nelore cows received an intravaginal progesterone (P4) device and were assigned in three groups. Cows in the EB-1 (n=20), EB-1.5 (n=15) or EB-2 (n=21) groups received, respectively, an im treatment with 1, 1.5 or 2 mg EB. A subgroup (n=10-13 cows/group) were subject to daily ovarian evaluations from D−10 to D0. On D−2, P4 devices were removed, and all cows received the same treatment: 1 mg estradiol cypionate,0.53 mg sodium cloprostenol, and 300 IU eCG. Statistical analyses were performed considering only the= main effects of treatment group and parity order. The proportion of cows with a synchronized FWE and the moment of the FWE did not differ (p>0.05) among the treatment groups (overall: 80% [28/35] and 4.1 ± 0.4 days); however, the FWE occurred earlier (p=0.007) in MULT (3.8 ± 0.2 days) than PRIM (5.1 ± 0.4) cows. The proportion of animals detected in estrus was greater (86% [31/36] vs. 70% [14/20]; p=0.02) and the dominant follicle was larger on D−2 (9.7 ± 0.3 mm vs. 7.8 ± 0.7 mm; p=0.006) and D0 (11.9 ± 0.4 mm vs. 10 ± 0.5 mm; p=0.008) in MULT than PRIM cows. In conclusion, the three EB doses presented similar efficiency to synchronize the FWE in suckled Nelore cows. Moreover, a delayed FWE and smaller dominant follicle is observed in PRIM cows, contributing to the reduced reproductive performance in this parity category when using similar TAI protocols of MULT cowsDepartamento de Reprodução Animal Faculdade de Medicina Veterinária e Zootecnia Universidade de São PauloFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista “Júlio de Mesquita Filho”Unidade de Pesquisa e Desenvolvimento Tietê Agência Paulista de Tecnologia dos AgronegóciosFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista “Júlio de Mesquita Filho”Universidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)Agência Paulista de Tecnologia dos AgronegóciosSilva, Amanda GuimarãesPinto, Leonardo Marin Ferreirade Amorim Silva, NadarkMattos, Ana Clara Degan [UNESP]Ambrósio, Pablo HenriqueDuarte, Keila Maria RoncatoAlvarez, Rafael HerreraPugliesi, Guilherme2022-04-29T08:45:53Z2022-04-29T08:45:53Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-8http://dx.doi.org/10.1590/1984-3143-AR2021-0016Animal Reproduction, v. 18, n. 3, p. 1-8, 2021.1984-31431806-9614http://hdl.handle.net/11449/23150610.1590/1984-3143-AR2021-00162-s2.0-85114814527Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnimal Reproductioninfo:eu-repo/semantics/openAccess2022-04-29T08:45:53Zoai:repositorio.unesp.br:11449/231506Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:45:53Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Comparison of three doses of estradiol benzoate for synchronization of follicular wave emergence in suckled Bos indicus beef cows |
title |
Comparison of three doses of estradiol benzoate for synchronization of follicular wave emergence in suckled Bos indicus beef cows |
spellingShingle |
Comparison of three doses of estradiol benzoate for synchronization of follicular wave emergence in suckled Bos indicus beef cows Silva, Amanda Guimarães Bos indicus cattle estradiol benzoate follicular dynamics multiparous primiparous |
title_short |
Comparison of three doses of estradiol benzoate for synchronization of follicular wave emergence in suckled Bos indicus beef cows |
title_full |
Comparison of three doses of estradiol benzoate for synchronization of follicular wave emergence in suckled Bos indicus beef cows |
title_fullStr |
Comparison of three doses of estradiol benzoate for synchronization of follicular wave emergence in suckled Bos indicus beef cows |
title_full_unstemmed |
Comparison of three doses of estradiol benzoate for synchronization of follicular wave emergence in suckled Bos indicus beef cows |
title_sort |
Comparison of three doses of estradiol benzoate for synchronization of follicular wave emergence in suckled Bos indicus beef cows |
author |
Silva, Amanda Guimarães |
author_facet |
Silva, Amanda Guimarães Pinto, Leonardo Marin Ferreira de Amorim Silva, Nadark Mattos, Ana Clara Degan [UNESP] Ambrósio, Pablo Henrique Duarte, Keila Maria Roncato Alvarez, Rafael Herrera Pugliesi, Guilherme |
author_role |
author |
author2 |
Pinto, Leonardo Marin Ferreira de Amorim Silva, Nadark Mattos, Ana Clara Degan [UNESP] Ambrósio, Pablo Henrique Duarte, Keila Maria Roncato Alvarez, Rafael Herrera Pugliesi, Guilherme |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (UNESP) Agência Paulista de Tecnologia dos Agronegócios |
dc.contributor.author.fl_str_mv |
Silva, Amanda Guimarães Pinto, Leonardo Marin Ferreira de Amorim Silva, Nadark Mattos, Ana Clara Degan [UNESP] Ambrósio, Pablo Henrique Duarte, Keila Maria Roncato Alvarez, Rafael Herrera Pugliesi, Guilherme |
dc.subject.por.fl_str_mv |
Bos indicus cattle estradiol benzoate follicular dynamics multiparous primiparous |
topic |
Bos indicus cattle estradiol benzoate follicular dynamics multiparous primiparous |
description |
We aimed to compare the effect of three estradiol benzoate (EB) doses on follicular wave emergence (FWE) and dominant follicle growth of suckled Nelore cows submitted to TAI (D0). On a random day of estrous cycle (D−10), multiparous (MULT; n=36) and primiparous (PRIM; n=20) suckled Nelore cows received an intravaginal progesterone (P4) device and were assigned in three groups. Cows in the EB-1 (n=20), EB-1.5 (n=15) or EB-2 (n=21) groups received, respectively, an im treatment with 1, 1.5 or 2 mg EB. A subgroup (n=10-13 cows/group) were subject to daily ovarian evaluations from D−10 to D0. On D−2, P4 devices were removed, and all cows received the same treatment: 1 mg estradiol cypionate,0.53 mg sodium cloprostenol, and 300 IU eCG. Statistical analyses were performed considering only the= main effects of treatment group and parity order. The proportion of cows with a synchronized FWE and the moment of the FWE did not differ (p>0.05) among the treatment groups (overall: 80% [28/35] and 4.1 ± 0.4 days); however, the FWE occurred earlier (p=0.007) in MULT (3.8 ± 0.2 days) than PRIM (5.1 ± 0.4) cows. The proportion of animals detected in estrus was greater (86% [31/36] vs. 70% [14/20]; p=0.02) and the dominant follicle was larger on D−2 (9.7 ± 0.3 mm vs. 7.8 ± 0.7 mm; p=0.006) and D0 (11.9 ± 0.4 mm vs. 10 ± 0.5 mm; p=0.008) in MULT than PRIM cows. In conclusion, the three EB doses presented similar efficiency to synchronize the FWE in suckled Nelore cows. Moreover, a delayed FWE and smaller dominant follicle is observed in PRIM cows, contributing to the reduced reproductive performance in this parity category when using similar TAI protocols of MULT cows |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 2022-04-29T08:45:53Z 2022-04-29T08:45:53Z |
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/10.1590/1984-3143-AR2021-0016 Animal Reproduction, v. 18, n. 3, p. 1-8, 2021. 1984-3143 1806-9614 http://hdl.handle.net/11449/231506 10.1590/1984-3143-AR2021-0016 2-s2.0-85114814527 |
url |
http://dx.doi.org/10.1590/1984-3143-AR2021-0016 http://hdl.handle.net/11449/231506 |
identifier_str_mv |
Animal Reproduction, v. 18, n. 3, p. 1-8, 2021. 1984-3143 1806-9614 10.1590/1984-3143-AR2021-0016 2-s2.0-85114814527 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Animal Reproduction |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1-8 |
dc.source.none.fl_str_mv |
Scopus 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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1799964582595264512 |