Sütçü ineklerde farklı dozlardaki $PGF_{2alpha}$ uygulamalarının corpus luteum ve follukül dinamiğine etkilerinin ultrasonografi ve progesteron ölçümleri ile araştırılması

Bu çalışmada ineklerde $PGF_{2alpha}$'nın çeşitli dozlarının, follikül dinamiği ve corpus luteum üzerindeki etkisinin belirlenmesi amaçlandı. Çalışmada onarlı dört grup halinde, 40 baş Holstein inek kullanıldı. Östrus günü 0. gün olarak kabul edilip, ilk üç gruba çalışmanın 7. gününde farklı dozlarda $PGF_{2alpha}$ uygulandı. A grubuna tek doz, B grubuna 7 saat arayla çift doz, C grubuna ise sekiz saat arayla $PGF_{2alpha}$ 'nın üçe bölünmüş dozları uygulandı. Kontrol grubuna $PGF_{2alpha}$ uygulaması yapılmadı. Ovulasyona kadar corpus luteumun regresyonu ve dominant follikülün gelişimi ultrasonografik muayenelerle gözlendi. Dominant follikül ilk kez 4-5. gün civarında saptandı ve 6-7. gününe kadar lineer gelişim aşamasında olduğu görüldü (p

The investigation of effect of different doses of $PGF_{2alpha}$ applications on corpus luteum and follicular dynamic by ultrasonography and progesterone assay in dairy cows

The aim of this study was to determine the effect of different doses of $PGF_{2alpha}$ on follicular dynamic and corpus luteum. In this study we used a total 40 Holstein cows and put them in 4 groups (n=10). Estrous day was regarded as day 0 and, the first 3 groups injected with different doses of $PGF_{2alpha}$. Group A was injected with single dose of $PGF_{2alpha}$, Group B was injected with a double amount of $PGF_{2alpha}$ injection at 7 hour interval and, Group C was injected with 1/3 proportions of $PGF_{2alpha}$ at 8 hour interval. Group D was not injected. Regression of corpus luteum and dominant follicle development were monitored by ultrasonography. Dominant follicle was first detected on day 4 or 5 and showed a linear development from that time on up to day 6, or 7 (p

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