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The Effect of Different Estrus Synchronization Methods on Reproductive Performance in Laparoscopic Artificial Insemination Program in Morkaraman Sheep
(2022) Korkmaz, Müzeyyen Kutluca; YAPRAK, Mustafa
This study investigated the reproductive performance, lamb survivability, and growing performance\rof Morkaraman ewes, the estrus of which was induced by natural and synthetic progesterone and\rwhich were inseminated by laparoscopic technique at the end of the mating season (December). In\rthe study, 5 different estrus synchronization methods (CIDR, Crestar, Natural progesterone,\rCronolone and MAP), 100 Morkaraman ewes, and lambs born to them were used. After the\rcompletion of the estrus synchronization methods, the first sign of estrus was detected earliest in\rthe natural progesterone group (39.53±1.87 hours), and there was a significant difference between\rthe natural progesterone and vaginal sponges containing MAP and Cronolone concerning the time\rto the first hour of estrus. Estrus rates were found significantly different across the study groups,\rwith the shortest time to estrus having been achieved by MAP. The lambing rates for CIDR,\rCronolone, Natural progesterone, MAP, and Crestar groups were 74%, 61%, 56%, 33%, and 10%,\rrespectively. There was no significant difference between the treatment groups concerning birth\rweight, weight at various periods, and survivability of lambs although a significant difference was\rfound in their weaning weight.