Koyuncu, MehmetAltınçekiç, Şeniz ÖzişNageye, Farida İbrahim2024-10-162024-10-162019-01-01https://doi.org/10.18016/ksutarimdoga.vi.560334http://dogadergi.ksu.edu.tr/tr/pub/issue/49073/560334https://hdl.handle.net/11452/46517This study was conducted to review the effects of CIDR vitamin A, E + Se administration on fertility and lamb performance on Kivtrcik ewes during anestrus season. The ewes were randomly assigned into 5 groups. Animals in group 1 served as GDR containing 0.33 g progesterone were inserted into vagina and then removed after 14 days. Following the removal of vaginal apparatuses and PGF2 alpha injection, intramuscular 500 IU Pregnant Mare Serum Gonadotrophin (PMSG) was injected in 20 head of ewes. Animals in group 2 were administered CIDR + Vitamin A + Vitamin F in 20 head of ewes. Animals in group 3 were administered Vitamin A (2ml/head) in 20 head of ewes. Animals in group 4 were administered Vitamin E + Se (2ml/head) in 20 head of ewes. Animals in group 3 served as control in 18 head of ewes. After 24 hours as of application, rams were added in the herd. Results of pregnancy rate (95.0%, 100.0%, 100.0%, 100.0%, 83.3%), lambing rate (95.0%, 100.0%, 100.0%, 100.0%, 83.3%) and prolificacy (21.1, 30.0, 5.0, 10.0, 0.0) were found for ewes of CIDR, CIDR + Vitamin A, E + Se, Vitamin A, Vitamin E + Se administered ewes and control groups, respectively. It can be concluded that administration of CIDR, Vitamin A and E + Se alone and in combination improved reproductive performance on Kivircik ewes.eninfo:eu-repo/semantics/openAccessReproductive-performanceEstrus synchronizationIntravaginal devicesEstrous inductionE supplementationProgestagen-pmsgBreeding-seasonLate pregnancyLamb survivalEwesKivircik sheepCidrVitamin aVitamin e + seReproductive performanceSurvival rateAgricultureArticle00049187720002417918722Supplement 110.18016/ksutarimdoga.vi.5603342619-9149