The Effects of Short-Medium and Long-Term Applications of Fluorogestone Acetate (FGA) on Reproductive Performance of Kıvırcık Ewes at The Onset of The Breeding Season

Bu çalışmanın amacı, üreme mevsimi başlangıcında Kıvırcık koyunlarında gebe kısrak serumu gonadotropin (PMSG) ile progesteronun farklı uygulamalarının etkinliğinin araştırılmasıdır. Araştırmada yaşları 3 - 5, vücut kondisyon puanı 3.5-4.0 arasında değişen ve canlı ağırlıkları ortalama 47.7 kg olan toplam 111 baş koyun kullanılmıştır. Koyunlar rastgele 3 eşit gruba (n=37) ayrılmıştır. Gruplarda yer alan koyunlara FGA (30mg) içeren vaginal süngerler kısa (7 gün), orta (10 gün) ve uzun (14 gün) süreli olarak uygulanmıştır. Tüm gruplarda yer alan koyunlara süngerlerin çıkarıldığı gün 500 IU PMSG kas içi olarak enjekte edilmiştir. Östrus oranı, kuzulama oranı, çoğuz doğum oranı, döl tutma oranı ve yavru verimi kısa süreli grupta sırasıyla % 81.8, %70.3, %19.2, 0.86 ve 1.23; orta süreli grupta % 89.2, %83.8, %12.0, 1.24, 1.48; uzun süreli grupta % 94.6, %91.2, %35.3, 1.30, 1.41 olarak saptanmıştır. Gruplar arasında östrus görülme oranı, kuzulama oranı, döl tutma oranı ve yavru verimi (P

Üreme Mevsimindeki Kıvırcık Koyunlarının Döl Verimi Üzerine Kısa, Orta ve Uzun Süreli FGA (Fluorogestone Acetate) Uygulamasının Etkileri

The aim of the present study was to investigate the efficiency of different treatments of progestogen with Pregnant Mare Serum Gonadotropin (PMSG) in Kıvırcık ewes at the onset of the breeding season. A total of 111 ewes, 3 to 5 years old, weighing on average 47.7 kg and with a body condition score of 3.5 to 4.0 were used in this study. The ewes were randomly divided into 3 equal groups (n= 37 per group). Intravaginal progestogen sponges containing 30 mg FGA were inserted intravaginally in the ewes and left for a different number of days; 7 days for the short-term treatment, 10 days for the medium-term treatment and 14 days for the long-term treatment. Additionally, 500 IU of PMSG was injected administered intramuscularly when the sponges were removed. The estrous response, lambing rate, rate of multiple births, fecundity and litter size were 81.8 %, 70.3 % , 19.2 %, 0.86 and 1.23 in the short-term group; 89.2 %, 83.8 %, 12.0 %, 1.24 and 1.48 in the medium-term group; and 94.6 % , 91.2 % , 35.3 %, 1.30 and 1.41 in the long-term group, respectively. The duration of sponge treatment had a significant effect on estrous response, lambing rate, fecundity, litter size (P

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