Effect of a 12-h increment in the short-term treatment regimen on ovarian status, estrus synchrony, and pregnancy rate in artificially inseminated dairy goats

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dc.contributor.authorCarvalho-de-Paula, Cleber Jonas
dc.contributor.authorGoncalves Souza-Fabjan, Joanna Maria
dc.contributor.authorGoncalves, Joedson Dantas [UNESP]
dc.contributor.authorDias, Jenniffer Hauschildt
dc.contributor.authorSouza, Guilherme Nunes de
dc.contributor.authorFranco Oliveira, Maria Emilia [UNESP]
dc.contributor.authorFonseca, Jeferson Ferreira
dc.contributor.institutionUniversidade Federal Fluminense (UFF)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Viçosa (UFV)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2021-06-25T11:23:42Z
dc.date.available2021-06-25T11:23:42Z
dc.date.issued2020-10-01
dc.description.abstractThis study was conducted to assess effects of two hormonal treatments on ovarian follicular status, estrous synchrony and fertility in dairy goats during the non-breeding season when duration of progestogen device use varied by 12 h. In both experiments, does were administered 60 mg of medmxyprogesterone acetate via intravaginal devices, respectively, for 6 and 6.5 d (G6 and G6.5). At 24 or 36 h before device removal, 200 IU of eCG im and 30 mu g d-clopmstenol im were administered. In Experiment 1 (n = 24), data related to sexual behavior and that were collected using ovarian ultrasonography were recorded, and in Experiment 2 (n = 83) fertility was assessed after Flexible Time Artificial Insemination (FxTAI). The interval from device removal to estrus was shorter (P < 0.05) after imposing the G6.5 treatment regimen. Diameter of largest and second-largest ovarian follicles and interval from device removal to ovulation were similar (P> 0.05) between groups. The does treated with the G6.5 hormonal regimen had greater estrous synchrony, associated with greater development of largest follicles at the time of device removal, which might have led to a lesser fertility rate (P > 0.05). Conversely, treatment with the G6 hormonal regimen resulted in a greater conception rate. In conclusion, increasing time the intravaginal device is inserted from 6 to 6.5 d resulted in greater estrous synchrony, advanced ovarian follicular development, abnormal CL function and lesser pregnancy rates in artificially inseminated dairy goats when there were treatments during the non-breeding season.en
dc.description.affiliationUniv Fed Fluminense, Fac Vet, Av Vital Brazil Filho 64, BR-24230340 Niteroi, RJ, Brazil
dc.description.affiliationUniv Estadual Paulista, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUniv Fed Vicosa, Av Peter Henry Rolfs S-N, BR-36570000 Vicosa, MG, Brazil
dc.description.affiliationEmbrapa Gado Leite, Rua Eugenio do Nascimento 610, BR-36038330 Juiz De Fora, MG, Brazil
dc.description.affiliationEmbrapa Caprinos & Ovinos, Estr Sobral Groairas,Km 04,CP 145, BR-62010970 Sobral, CE, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.description.sponsorshipEMBRAPA
dc.description.sponsorshipCoordenacno de Aperfeicoamento de Pessoal de Nivel Superior-Brasil
dc.description.sponsorshipIdCNPq: 310166/2012-8
dc.description.sponsorshipIdCNPq: 479826 2013-7
dc.description.sponsorshipIdFAPEMIG: CVZ-PPM 00201-17
dc.description.sponsorshipIdEMBRAPA: 20.19.01.004.00.03.001
dc.description.sponsorshipIdCoordenacno de Aperfeicoamento de Pessoal de Nivel Superior-Brasil: 001
dc.format.extent9
dc.identifierhttp://dx.doi.org/10.1016/j.anireprosci.2020.106571
dc.identifier.citationAnimal Reproduction Science. Amsterdam: Elsevier, v. 221, 9 p., 2020.
dc.identifier.doi10.1016/j.anireprosci.2020.106571
dc.identifier.issn0378-4320
dc.identifier.urihttp://hdl.handle.net/11449/208882
dc.identifier.wosWOS:000580633600016
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofAnimal Reproduction Science
dc.sourceWeb of Science
dc.subjectAI
dc.subjectAnestrus
dc.subjectCaprine
dc.subjectCorpora Lutea
dc.subjectFollicular Dynamics
dc.subjectUltrasound
dc.titleEffect of a 12-h increment in the short-term treatment regimen on ovarian status, estrus synchrony, and pregnancy rate in artificially inseminated dairy goatsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.

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