Data/hora: 19/06/2024 00:15:44

Biblioteca(s): | Embrapa Caprinos e Ovinos; Embrapa Pecuária Sudeste.
Data corrente: | 11/11/2022
Data da última atualização: | 11/11/2022
Autoria: | OLIVEIRA, M. E. F.; ARRAIS, A. M.; VERGANI, G. B.; ESTEVES, S. N.; PEREIRA, V. S. do A.; GARCIA, A. R.; BASTOS, R.; MELO, M. R. B.; ALVES, B. R. C.; FONSECA, J. F. da.
Afiliação: | MARIA EMILIA FRANCO OLIVEIRA, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista (UNESP), Jaboticabal; ALINE MATOS ARRAIS, Universidade Federal Rural do Rio de Janeiro (UFRRJ), Seropédica; GABRIEL BRUN VERGANI, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista (UNESP), Jaboticabal; SERGIO NOVITA ESTEVES, CPPSE; VERONICA SCHINAIDER DO A PEREIRA, CPPSE; ALEXANDRE ROSSETTO GARCIA, CPPSE; ROSEMARY BASTOS, Universidade Estadual do Norte Fluminense Darcy Ribeiro; MARCO ROBERTO BOURG MELO, Universidade Federal Rural do Rio de Janeiro (UFRRJ), Seropédica; BRUNA RIOS COELHO ALVES, Universidade Federal Fluminense, Niterói; JEFERSON FERREIRA DA FONSECA, CNPC.
Título: | Hormonal-induced cervical relaxation during diestrus in ewes: cervical transposing feasibility and use of hCG for rescuing. Disrupted Luteal Function
Ano de publicação: | 2022
Fonte/Imprenta: | Journal of Applied Animal Welfare Science, 2022.
Páginas: | 17 p.
DOI: | https://doi.org/10.1080/10888705.2022.2141576
Idioma: | Inglês
Conteúdo: | Cervical relaxation (CR) was performed in ewes during diestrus, to prospect a feasible protocol for non-surgical embryo transfer (NSET). In Trial 1, naturally mated ewes (n=13) received CR protocols with estradiol benzoate (EB, 1 mg on D6) and oxytocin (OT, 50 IU on D7) only (G-EB+OT) or associated with human chorionic gonadotropin (hCG, 300 IU on D7, G-EB+OT+hCG) and were compared to non-hormonally treated (G-control) ewes. Estradiol concentration increased (P<0.05) from D6 to D7 in G-EB+OT and G-EB+OT+hCG, then decreased (P<0.05) on D8. The G-EB+OT had reduced (P<0.05) progesterone on D8, and 0% (0/5) pregnancy, while G-control had 100% (3/3) conception rate. The treatment with hCG mitigated the progesterone drop on D8 and resulted in 50% (2/4) conception rate. In Trial 2, cervical transposing success after treatment with EB, OT, and hCG on D6 and D7 was assessed in nulliparous (n=25) and multiparous (n=30) ewes. The EB+OT+hCG protocol allowed efficient cervical transposition (~78% of cervical transposition success into ~5 min) in nulliparous and multiparous females and did not alter total and blood perfusion areas of corpora lutea (CL). The use of EB+OT+hCG was efficient to ensure effective cervical transposing in nulliparous and multiparous ewes, with no apparent deleterious effect on CL function, and may contribute to animal welfare, allowing a less invasive NSET procedure.
Palavras-Chave: | Nonsurgical; Pharmacological; Transcervical.
Thesaurus Nal: | Animal welfare; Embryo transfer; Sheep.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Pecuária Sudeste (CPPSE)

Exemplares:

CPPSE - (25770-1) - UPC - AP - DD - PROCI-2022.00107 - OLI - 2022.00183 - DIS
CNPC - (40377-1) - UPC - AP - DD -  -  -  - DIS