Reproductive parameters of dairy goats after receiving two doses of d-cloprostenol at different intervals

dc.contributor.authorMaia, A. L. R. S.
dc.contributor.authorBrandao, F. Z.
dc.contributor.authorSouza-Fabjan, J. M. G.
dc.contributor.authorBalaro, M. F. A.
dc.contributor.authorOliveira, M. E. F. [UNESP]
dc.contributor.authorFaco, O.
dc.contributor.authorFonseca, J. F.
dc.contributor.institutionFluminense Fed Univ
dc.contributor.institutionUniv Grande Rio
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.description.abstractThis study evaluated the efficiency of two d-cloprostenol injections at different intervals on the reproductive parameters of dairy goats. Trial 1 comprised 54 goats allocated to receive two 37.5 mu g d-cloprostenol doses at intervals of seven (T-7, n = 19), 10 (T-10, n = 18), and 11.5 (T-11.5, n = 17) days. Trial 2 comprised 62 goats allocated to receive injections at T-7 (n = 30) and T-11.(5) (n = 32). Ultrasonography was done and blood was collected just before d-cloprostenol injections. After the second dose, goats were artificially inseminated (AI) with frozen-thawed semen at 18-24 h (Trial 1) or at 10-24 h (adjusted according to the time of estrus onset in Trial 2) after estrus detection. Estrus response rate did not differ (P > 0.05) among groups in Trials 1 (T-7 = 94.7%; T-10 = 88.9%; T-11.5 = 88.2%) and 2 (T-7 = 90.0%; T-11.5 = 96.9). All females showed progesterone concentrations > 1 ng/mL before both d-cloprostenol injections. The largest follicle diameter present on ovaries was similar (P > 0.05) among treatments at the first and second dose. The second largest follicle diameter was superior (P < 0.05) to T-7 than to T-10 and T-11.5 goats at first dose only. This possibly resulted in lower interval to estrus (P < 0.05) in T-7-treated goats than other treated goats in both trials. The conception rate was similar among treatment groups in Trials 1 (T-7 = 55.6%; T-10 = 18.8%; T-11.5 = 26.7%) and 2 (T-7 = 85.2%; T-11.5 = 93.6%). The three treatments efficiently synchronized estrus. T-7 and T-11.5 protocols resulted in high estrus synchrony and conception rates when adjusting the AI time according to interval of estrus.en
dc.description.affiliationFluminense Fed Univ, Fac Vet Med, Ave Vital Brasil Filho 64, BR-24230340 Niteroi, RJ, Brazil
dc.description.affiliationUniv Grande Rio, Sch Hlth Sci, Fac Vet Med, Rua Prof Jose de Souza Herdy 1160, BR-25071202 Duque De Caxias, RJ, Brazil
dc.description.affiliationSao Paulo State Univ, Coll Agr & Vet Sci, Access Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationEmbrapa Goats & Sheep Res Ctr, Estr Sobral Groairas,Km 04,CP 145, BR-62010970 Sobral, CE, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Coll Agr & Vet Sci, Access 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.sponsorshipIdCNPq: 310166/2012-8
dc.description.sponsorshipIdCNPq: 479826 2013-7
dc.description.sponsorshipIdFAPEMIG: CVZ-PPM 00042-14
dc.identifier.citationAnimal Reproduction Science. Amsterdam: Elsevier Science Bv, v. 181, p. 16-23, 2017.
dc.publisherElsevier B.V.
dc.relation.ispartofAnimal Reproduction Science
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectPGF2 alpha analog
dc.subjectReproductive performance
dc.titleReproductive parameters of dairy goats after receiving two doses of d-cloprostenol at different intervalsen
dcterms.rightsHolderElsevier B.V.
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