Synchronization of ovulation (FTET) in Turcana sheep as embryo recipients

• DOI: 10.61900/spjvs.2023.04.21
• Publication Date: 2024-05-09T11:21:17Z
• Authors: Ștefan-Gregore Ci...; Sebastian-Gabriel...; Ioana-Livia Pruteanu; Dan Drugociu; ; Florin Nechifor; ; Petru Roșca
• Keywords: Estrus synchronization

Due to the fact that farm wants crossbreed sheep with meat breeds, it was opted for fastest solution bring genetic progress, namely embryo transfer, using from Turcan breed as recipients and those Suffolk donors, so finally batch of receivers after parturition will produce a production lambs. Following selection considering standard criteria include: general health, functional integrity genital tract cyclic activity ovaries, two groups were formed induction synchronization estrus. The first consisted 20 second 20. subjected P4-PG-PMSG protocol P4-PG-GnRH protocol. protocols insertion intravaginal sponges flugestone acetate in concentration 20mg, induce progesterone phase, 13 days, day 0 being represented by when applied. In continuation protocol, Prostaglandinf2α used on 12 double dose, morning evening at distance hours dose 0.6 ml/administration/animal. On 13, removed PMSG (Folligon) administered case 600 IU/animal, GnRH (Receptal) μg/animal ( 3ml/animal) followed IU HCG (Chorulon) 24 administration. Ovulation accurately assessed time transfer through laparotomy, due highlighting ovaries their macroscopic analysis operative field, identifying CL ovary, appearance number ovary. However, assessment rate entry into heat end biostimulating receptors help detector rams, thus ewes entered estrus – hours, 48 or over completing results obtained having highest entering between - 40%, 30% lowest 20% had 60% 12-24 24-48 respectively 20%. Compared groups, there differences timing ovulation assessment, group PMSG, well-developed CL, 10% presented but these unsuitable ovarian cysts, did not ovulate, an 40% animals difference batches is observed which indicates PMSG-based pharmaceutical causing cysts. conclusion, therapeutic off-season sheep, this study, resulted detection 90% 80% (60% well developed poorly CL), regarding batch, 100% oestrus detected, them ovulated developed. These can be largely attributed reproduction seasonality sheep.