Takci Abdurrahman, Dinc Dursun Ali
Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Sivas Cumhuriyet University, Sivas 58140, Türkiye.
Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Selcuk University, Konya 42130, Türkiye.
Vet Sci. 2023 Aug 2;10(8):499. doi: 10.3390/vetsci10080499.
A total of 100 Kangal sheep were divided into four groups with the aim of investigating the effectiveness of resynchronization during anestrus for the first time in the literature. The groups were then divided into two further subgroups, namely the resynchronization subgroup group (hCG+resynch) and group (resynch)) and the no resynchronization subgroup (Group (hCG) and group (control)). All the groups started with progesterone-containing sponge insertion on Day 7. The sponge was removed after 7 days (on Day 0), and 600 IU eCG + 131.5 µg PGF2α was injected. The animals in group (hCG+resynch) and group (hCG) received hCG injection at the time of sponge administration. Accordingly, four different groups were established, i.e., resynchronization + hCG administration group (hCG+resynch); n:25), no resynchronization + hCG administration (group (hCG); n:25), resynchronization + no hCG administration (group (resynch); n:25), and no resynchronization + no hCG administration (Group (control); n:25). Estrus rates at the first application in group (hCG+resynch), group (hCG), group (resynch), and group (control) groups were 76%, 88%, 96%, and 76%, respectively, and pregnancy rates were 52%, 64%, 72%, and 60%, respectively; there were no intergroup statistical differences in the two parameters above. It was concluded that resynchronization performed with two consecutive stimulations during anestrus could help save time and provide a pregnancy rate at a level that can provide economic returns.
总共100只坎高羊被分为四组，目的是首次在文献中研究发情间期再同步化的有效性。然后将这些组进一步分为两个亚组，即再同步化亚组（hCG+再同步化组）和（再同步化组）以及非再同步化亚组（hCG组和对照组）。所有组均在第7天开始插入含孕酮海绵栓。7天后（第0天）取出海绵栓，并注射600 IU孕马血清促性腺激素（eCG）+131.5μg前列腺素F2α（PGF2α）。（hCG+再同步化组）和（hCG组）的动物在插入海绵栓时接受hCG注射。据此，建立了四个不同的组，即再同步化+hCG给药组（hCG+再同步化组；n=25）、非再同步化+hCG给药组（hCG组；n=25）、再同步化+非hCG给药组（再同步化组；n=25）和非再同步化+非hCG给药组（对照组；n=25）。（hCG+再同步化组）、（hCG组）、（再同步化组）和（对照组）首次给药时的发情率分别为76%、88%、96%和76%，妊娠率分别为52%、64%、72%和60%；上述两个参数在组间无统计学差异。得出结论：发情间期连续两次刺激进行再同步化有助于节省时间，并提供能带来经济回报水平的妊娠率。
