Data/hora: 06/06/2024 05:32:16

Biblioteca(s): | Embrapa Caprinos e Ovinos; Embrapa Pecuária Sudeste.
Data corrente: | 23/05/2023
Data da última atualização: | 28/11/2023
Autoria: | DIAS, J. H.; VERGANI; GONÇALVES, J. D.; OLIVEIRA, T. A.; PENITENTE-FILHO, J. M.; PEREIRA, V. S. do A.; ESTEVES, S. N.; GARCIA, A. R.; BATISTA, R. I. T. P.; OLIVEIRA, M. E. F.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da.
Afiliação: | J. H. DIAS, Universidade Federal de Viçosa; G. B. VERGANI, Universidade Estadual Paulista; J. D. GONÇALVES, Universidade Estadual Paulista; T. A. OLIVEIRA, Universidade Federal Fluminense; J. M. PENITENTE-FILHO, Universidade Federal de Viçosa; VERONICA SCHINAIDER DO A PEREIRA, CPPSE; SERGIO NOVITA ESTEVES, CPPSE; ALEXANDRE ROSSETTO GARCIA, CPPSE; R. I. T. P. BATISTA, Universidade Federal Fluminense; M. E. F. OLIVEIRA, Universidade Estadual Paulista; J. M. G. SOUZA-FABJAN, Universidade Federal Fluminense; JEFERSON FERREIRA DA FONSECA, CNPC.
Título: | Different doses of pFSH are effective to promote follicular growth, superovulatory response, and embryo yield in White Dorper ewes.
Ano de publicação: | 2023
Fonte/Imprenta: | Small Ruminant Research, v. 220, n. 103, mar. 2023, 106914.
DOI: | https://doi.org/10.1016/j.smallrumres.2023.106914
Idioma: | Inglês
Conteúdo: | Abstract: This study evaluated the effect of 250, 333, or 400 IU of a commercial porcine stimulating-follicle hormone (pFSH) on follicular growth, superovulatory (SOV) response, and embryo yield in White Dorper sheep. Ewes received an induced-ovulation protocol (D0 = progesterone (P4) device insertion) and superovulation starting 60 h before P4 withdrawal (D9), which consisted of six decreasing doses of 250 IU (G250; n = 15), 333 IU (G333; n = 15), or 400 IU (G400; n = 14) of pFSH. Ewes also received 50 µg of gonadotropin-releasing hormone (GnRH) analog on D10 and 300 IU of hCG on D13. Ewes were mated and submitted to non-surgical embryo recovery (NSER). Ultrasound evaluations were performed on D6, D7, D8, D9, and D16. The overall responding donor rate (&#8805;3 CL) was 86.4% (38/44). The mean number of large follicles was higher (P < 0.05) in all groups on D8 (6.2 ± 0.9, 7.7 ± 0.9, and 8.3 ± 1.1) and D9 (11.1 ± 0.6, 10.4 ± 1.0, and 11.5 ± 0.9). Non-surgical embryo recovery procedures were successfully performed in 60.5% (23/38) of females. The CL count in successfully flushed ewes was greater (P < 0.05) in G333 (12.7 ± 2.3) and G400 (12.0 ± 1.3) than in G250 (6.0 ± 1.1). The recovery rate (44.4%, 57.3%, and 50.0%) and numbers of transferable embryos (2.3 ± 1.1, 6.1 ± 2.6, and 4.5 ± 1.3) did not differ (P > 0.05) among groups. All protocols were efficient in promoting follicular growth and adequate superovulatory response and embryo yield.
Palavras-Chave: | Follicular dynamics; FSH; MOET; Ovarian superestimulation; Ovine; PFSH.
Thesaurus Nal: | Ewes; Reproduction; Sheep.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Pecuária Sudeste (CPPSE)

Exemplares:

CPPSE - (26042-1) - UPC - AP - DD - PROCI-2023.00039 - DIA - 2023.00133 - DIS
CNPC - (40571-1) - UPC - AP - DD -  -  -  - DIS