Effects of recombinant bovine somatotropin on pregnancy per artificial insemination, corpus luteum cellular composition and endometrial gland morphometry in beef cattle

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorInstitute of Food and Agricultural Sciences-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorRG Advanced Genetics-
Autor(es): dc.creatorCosta, Natália Paulozzi [UNESP]-
Autor(es): dc.creatorGonella-Diaza, Angela-
Autor(es): dc.creatorPugliesi, Guilherme-
Autor(es): dc.creatorCordeiro Maldonado, Mariângela Bueno [UNESP]-
Autor(es): dc.creatorScollari, Saara Carollina-
Autor(es): dc.creatorMello, Barbara Piffero-
Autor(es): dc.creatorFeltrin, Isabella [UNESP]-
Autor(es): dc.creatorGirotto, Renato-
Autor(es): dc.creatorCastilho, Caliê-
Autor(es): dc.creatorBertan Membrive, Claudia Maria [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:32:50Z-
Data de disponibilização: dc.date.available2022-02-22T00:32:50Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.theriogenology.2019.09.023-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/201182-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/201182-
Descrição: dc.descriptionThe aim of this research was to evaluate the effect of recombinant bovine somatotropin (bST) on pregnancy per artificial insemination (P/AI), cellular composition of the corpus luteum (CL) and endometrial gland morphometry. In Experiment 1, Nelore cows (n = 587) received a fixed-time artificial insemination (FTAI) protocol and, at insemination, received 0, 250 or 500 mg of bST subcutaneously (SC). In Experiment 2, Nelore cows (n = 243) received 0 or 500 mg of bST, SC, on D7 (D0 = day of FTAI). Blood samples were collected on D7 and D16 to measure progesterone (P4) concentrations. In Experiments 1 and 2, pregnancy diagnosis was performed 30 days after FTAI. In Experiment 3, Nelore heifers (n = 20) received a FTAI protocol, but were not inseminated, and on D0 (ovulation day), they received 0 (bST 0; n = 9) or 500 mg of bST (bST 500; n = 11), SC. The heifers were slaughtered on D15 (D0 = ovulation day), at which time the CL was evaluated for diameter, weight, a percentage of large (LLC) and small (SLC) luteal cells, and the concentration of progesterone in plasma measured. The number, perimeter and area of superficial and deep endometrial glands were evaluated. There was no difference in P/AI when bST was applied on D0 and D7. In Experiment 1, P/AI did not differ among treatments, with 59.28% (115/194), 58.38% (115/197) and 65.82% (129/196) for the bST 0, 250 and 500 treatments, respectively. In Experiment 2, P/AI did not differ between treatments, with 57.3% (71/124) and 60.5% (62/119) for the bST 0 and 500 treatments, respectively. Plasma progesterone concentrations on D16 was greater in the bST 500 (11.63 ± 0.84 ng/mL) than bST 0 (9.83 ± 0.88 ng/mL). In Experiment 3, there was no difference in ovarian diameter and weight, CL diameter, percentage of SLC, P4 concentrations and endometrial gland morphology. Heifers in the bST 500 treatment had heavier CL (3.11 ± 0.32 vs. 2.25 ± 0.20 g); however, the bST 0 treatment heifers had a greater percentage of LLC than did the bST 500 treatment (13.72 ± 1.16% vs. 8.60 ± 1.52). It was concluded that the doses of bST used in this study do not increase P/AI; however, they do cause changes in P4 concentration and the cellular composition of the CL.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação para o Desenvolvimento da UNESP (FUNDUNESP)-
Descrição: dc.descriptionUniversidade Estadual Paulista-
Descrição: dc.descriptionSão Paulo State University - UNESP-
Descrição: dc.descriptionUniversity of Florida North Florida Research & Education Center Institute of Food and Agricultural Sciences-
Descrição: dc.descriptionUniversity of São Paulo-
Descrição: dc.descriptionRG Advanced Genetics-
Descrição: dc.descriptionUniversity of São Paulo West-
Descrição: dc.descriptionSão Paulo State University - UNESP-
Formato: dc.format180-185-
Idioma: dc.languageen-
Relação: dc.relationTheriogenology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBos indicus-
Palavras-chave: dc.subjectbST-
Palavras-chave: dc.subjectCorpus luteum-
Palavras-chave: dc.subjectEndometrium-
Palavras-chave: dc.subjectFertility-
Título: dc.titleEffects of recombinant bovine somatotropin on pregnancy per artificial insemination, corpus luteum cellular composition and endometrial gland morphometry in beef cattle-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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