Data/hora: 01/06/2024 02:41:46

Biblioteca(s): | Embrapa Caprinos e Ovinos; Embrapa Pecuária Sudeste.
Data corrente: | 18/09/2019
Data da última atualização: | 17/12/2019
Autoria: | PRELLWITZ, L.; ZAMBRINI, F. N.; GUIMARÃES, J. D.; SOUSA M. A. P. de; OLIVEIRA, M. E. F.; GARCIA, A. R.; ESTEVES, S. N.; BARTLEWSKI, P. M.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da.
Afiliação: | LUCIA PRELLWITZ, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil; FABIANA NUNES ZAMBRINI, Universidade Federal de Viçosa (UFV) - Viçosa, MG, Brazil; JOSÉ DOMINGOS GUIMARÃES, Universidade Federal de Viçosa (UFV) -Viçosa, MG, Brazil; Universidade Federal do Pará (UFPA) - Castanhal, PA, Brazil; Universidade Estadual Paulista (Unesp) - Jaboticabal, SP, Brazil; ALEXANDRE ROSSETTO GARCIA, CPPSE; SERGIO NOVITA ESTEVES, CPPSE; PAWEL MIECZYSLAW BARTLEWSKI, Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph - Guelph, ON, Ontario, Canada; JOANNA MARIA GONÇALVES SOUZA-FABJAN, Universidade Federal Fluminense (UFF) - Niterói, RJ, Brazil; JEFERSON FERREIRA DA FONSECA, CNPC.
Título: | Comparison of the intravenous and intravaginal route of oxytocin administration for cervical dilation protocol and non-surgical embryo recovery in oestrous-induced Santa Inês ewes.
Ano de publicação: | 2019
Fonte/Imprenta: | Reproduction in Domestic Animals, v. 54, n. 9, p. 1230-1235, Sept. 2019.
DOI: | 10.1111/rda.13499
Idioma: | Inglês
Conteúdo: | Abstract: This study compared the effects of intravaginal and intravenous routes of oxytocin (OT) administration in 46 oestrous-induced Santa Inês ewes (6-day treatment with progestin-releasing intravaginal sponges and a single injection of 200 IU of eCG at the time of sponge removal) that underwent transcervical embryo recovery 6-7 days after oestrous onset and mating. All ewes received 37.5 ug of d-cloprostenol via latero-vulvar route, and 1 mg of oestradiol benzoate i.m. 16 hr before and 50 IU of OT 20 min before non-surgical embryo recovery (NSER), with OT being administered intravenously (n = 21) or intravaginally (n = 21). An overall oestrous response was 95.6% (44/46), and adequate cervical retraction could be accomplished in 78.6% (33/42) of ewes. The percentage of successful NSER procedures was 57% (24/42) or 72.7% (24/33) of animals with sufficient cervical retraction. The duration of NSER procedure averaged 28 min (range: 17-40 min) and ~96% of flushing fluid could be recovered (range: 85%-100%). Out of 18 ewes that could not undergo NSER, 12 (66.6%) presented various anatomical barriers, whilst the other 33.4% did not present these barriers and still could not be traversed. Excluding the ewes with those anatomical features, the overall success rate of NSER was 80% (24/30). The route of OT administration had no effect on NSER efficiency or the ease with which transcervical embryo flushing was performed. Both routes of OT administration can be used for cervical dilation protocol. Discarding ewes with anatomical features precluding cervical penetration is highly recommended to increase the efficacy of NSER in sheep.
Palavras-Chave: | Cervical relaxation; Transcervical embryo collection; Uterine flushing.
Thesagro: | Ovino; Reprodução Animal; Transferência de Embrião.
Thesaurus Nal: | Embryo transfer; Oxytocin; Reproduction; Sheep.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Pecuária Sudeste (CPPSE)

Exemplares:

CNPC - (39255-1) - UPC - AP - DD -  -  -  - DIS
CPPSE - (24870-1) - UPC - AP - DD - PROCI-2019.00077 - PRE - 2019.00085 - DIS