Data/hora: 22/06/2024 07:08:35

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 16/07/2020
Data da última atualização: | 10/08/2021
Autoria: | DIAS, J. H.; PUPIN, M. A.; DUARTE, G. S.; BRAIR, V. L.; PAULA, C. J. C. de; SOUSA, M. A. P. de; BATISTA, R. I. T. P.; SOUZA-FABJAN, J. G. S.; OLIVEIRA, M. E. F.; FONSECA, J. F. da.
Afiliação: | JENNIFFER HAUSCHILDT DIAS, Universidade Federal de Viçosa; MARIA AMÉLIA PUPIN, Universidade Estadual Paulista; GABRIELA SALONI DUARTE, Universidade Estadual Paulista; VIVIANE LOPES BRAIR, Universidade Federal Fluminense; CLEBER JONAS CARVALHO DE PAULA, Universidade Federal Fluminense; MARCO ANTONIO PAULA DE SOUSA, Universidade Federal do Pará; RIBRIO IVAN TAVARES PEREIRA BATISTA, Universidade Federal Fluminense; JOANNA MARIA GONÇALVES SOUZA-FABJAN, Universidade Federal Fluminense; MARIA EMÍLIA FRANCO OLIVEIRA, Universidade Estadual Paulista; JEFERSON FERREIRA DA FONSECA, CNPC.
Título: | Successful transcervical uterine flushing can be performed without or reduced dose of oestradiol benzoate in cervical relaxation protocol in Dorper ewes.
Ano de publicação: | 2020
Fonte/Imprenta: | Reproduction in Domestic Animals, v. 55, n. 7, p. 844-850, Jul. 2020.
DOI: | https://doi.org/10.1111/rda.13692
Idioma: | Inglês
Conteúdo: | Abstract: This study assessed the efficiency of cervical relaxation protocol using none, half or full dose (1.0 mg) of oestradiol benzoate in Dorper ewes subjected to non?surgical embryo recovery (NSER). Thirty?six pluriparous ewes received progestogen sponge (60 mg) for 9 days plus eCG administration (300 IU i.m.) 24 hr before sponge removal. Ewes were not mated and were randomly assigned to receive at 16 hr before NSER 37.5 µg d?cloprostenol i.m. and different doses of oestradiol benzoate: 0.0 mg (0EB group; n = 12); 0.5 mg (0.5EB group; n = 12) or 1.0 mg of oestradiol (1.0EB group, n = 12). All ewes received oxytocin (50 IU) i.v. 20 min before NSER, which was performed 8 days after sponge removal. Corpora lutea were counted by transrectal ultrasonography 24 hr before NSER. After procedure, the ewes were kept in natural breeding period to check their post?NSER fertility. NSER was performed in 91.7% (33/36) of the animals with overall fluid recovery efficiency over 97% (p > .05). The cervical transposing with Hegar dilator was longer (p < .05) in 0EB (4.2 ± 0.3 min) compared to 0.5EB (1.7 ± 0.3 min) and 1.0EB group (1.5 ± 0.3 min). The cervical transposing with mandrel/catheter was longer (p < .05) in 0EB (2.4 ± 0.5 min) than 1.0EB group (1.3 ± 0.5 min). Overall duration of uterine flushing was 25.4 min with structure recovery rate of 43.5%, with no difference among groups (p > .05). The post?NSER fertility was higher (p < .05) in 0.0EB (90%) than 0.5EB group (36.4%). In conclusion, NSER can be successfully performed in Dorper ewes by using a cervical relaxation protocol without oestradiol benzoate.
Palavras-Chave: | Cervical dilation; NSER; Post-NSER fertility; Transcervical embryo recovery.
Thesaurus Nal: | Animal reproduction; Sheep.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (39612-1) - UPC - AP - DD -  -  -  - DIS