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To increase meat production at a level parallel to meet the demand of the increasing world population in recent years, reproductive management in farm animals must be successful. In order to reach the desired level of fertility in sheep, particularly starting with the non-prolific breeds, anoestrus period applications should be carried out effectively. In this study, different doses of equine chorionic gonadotropin were applied to determine the effective eCG dose for underwent estrus synchronization with progesterone in anoestrus Kangal ewes whose milk and wool yield has been completely abandoned by the breeder for various reasons and whose only economic benefit is lamb production. A total of 225 Kangal Akkaraman Sheep breeds, 2 years old, with a body condition score of 2.5-3.5 and an average weight of 40-50 kg, were included in the study. In line with this purpose, ewes were divided into 3 groups, containing 75 primiparous sheep. A vaginal sponge containing progesterone was inserted into the animals in all groups on day 0. Seven days after this application (on the 7th day), vaginal sponges were removed and Prostaglandin F2α (PGF2α) was applied. When the vaginal sponge was removed and the PGF2α was administered, 400 IU of eCG was given to animals in Group 1 (n:75), 500 IU of eCG was administrated to animals in Group 2 (n:75), and 600 IU of eCG was injected to the ewes in Group 3. The effectiveness of different doses of eCG application on reproductive parameters such as estrous rate, pregnancy rate, multiple pregnancy rate, and the number of offspring was evaluated. While no statistical difference could be determined between the groups in terms of the stated reproductive parameters, numerically more offspring were obtained in the group in which eCG was applied at a low rate (Group 1). In the light of this information, it is concluded that 400 IU eCG can be as effective as 600 IU eCG in sexual stimulation of Kangal ewes in anestrus.

Aim: In this study, it was aimed to determine the effect of parenteral vitamin (?-carotene and vitamin E) and trace element (selenium, manganese, copper, zinc) applications on pregnancy rates in Kangal ewes synchronized during the breeding season. Materials and Methods: The presented study was carried out with 200 Kangal ewe. The animals included in the study were randomly divided into four equal groups. Prostaglandin (PGF-2?) injections were administered to all groups with an interval of 11 days. Before synchronization, a combination of ?-carotene and vitamin E was applied to the one group and a combination of trace elements (selenium, manganese, copper, zinc) to the other group. To determine the effect of these micronutrients, both vitamin and trace elements combinations were applied to the 4th group. In contrast, the 1st group was accepted as the control group, and no treatment was given. Rams were introduced to all groups 48 hours following the last PGF-2? administration. Pregnancy diagnosis was achieved transabdominally by ultrasonography on the 35th and 60th days after ram introduction. Results: Pregnancy rates of control, 2nd, 3rd, and 4th groups at the 35thday examination were 64%, 62%, 50%, and 60%, respectively; pregnancy rates at the 60th-day inspection were 62%, 60%, 50%, and 59%, respectively.. No statistical difference was observed between the control and other groups. Late embryonic death and early fetal death rates were similar between groups. Conclusion: It was concluded that vitamin and mineral supplementation at the beginning of synchronization did not affect fertility, but at least 15 days ago before the onset of synchronization, repeated vitamin and trace element supplementation may increase fertility.

Aim: In this study, it was aimed to compare some hematological and biochemical variables in Kangal Akkaraman, Texel, and Île de France sheep breeds in the lactation period in Sivas province. Materials and Methods: A total of 120 ewe from three breeds (Kangal Akkaraman = 40, Texel = 40, Île de France = 40) who were clinically healthy nonpregnant and lactating (40-60 days) were used in the study. Hematological and biochemical variables analysis were performed using automatic cell counting and autoanalyzer devices. Results: There was no significant difference in WBC, Hb, MCHC, MPV levels between ewe breeds (p>0.05). RBC value was higher in Kangal Akkaraman than others (p0.05). Serum total protein, albumin, globulin, and P levels were higher in Kangal Akkaraman compared to others (p Conclusion: These results can constitute a reference value in these three sheep breeds reared in Sivas province, and help form a basis for future research.

Aim: The aim of this study was to detect the effect of different synchronization protocols on fetal sex in heifers. Materials and Methods: Heifers (n=120) were divided randomly into three groups. The heifers in the first group (n=40), the second group (40), and the third group (n=40) were synchronized with two doses of PGF2α, Ovsynch, and intravaginal progesterone respectively. Pregnant heifers were followed up and the sexes of calves were recorded. Operation records of the last year were taken in order for better evaluation. Results: In the first group, the pregnancy rate was 42.7% and 11 of calves born were male, 6 of them were female. In the second group, 45% pregnancy rate was achived and 7 of calves born of these pregnancies were male, 11 of which were female. As for the third group, 40,0% pregnancy rate was achived and 8 of calves born of these pregnancies were male, 8 of them female. When the operating records belongs to previous year were analyzed, it was determined that 48,1% female calf 51,9% male calves were born. No significant differences were found in pregnancy rate and fetal sex rate between different groups (P>0.05). Moreover, there was no statistical difference in gender ratio when datas compared with operating records (P>0.05). Conclusion:In conclusion, it was determined that different synchronization methods had no effect on fetal sex. Although there was no significant differences between groups, more male calves in PGF2α and more female calves were born in Ovsynch group.