Xi CHEN, Zongling LIU, Wenqian ZHANG, Chunhao ZHU, Yukun ZHAO, Yanping WANG, Weibin ZENG

Hu Koyunlarında Farklı Batın Genişliklerinin Doğum Sonrası Uterus İnvolüsyonu Oranına Etkisi

Bu çalışmada, Hu koyunlarında farklı batın genişliklerinin uterus involüsyon hızına etkilerini araştırdık. B-mod ultrasonografi kullanarak, doğum sonrası 0 ila 45. gün arasındaki 60 primipar Hu koyununun uterus kornu çapı ve maksimum uterus karunkül çapındaki değişiklikleri kaydettik. Doğum sonrası 0 ile 45. gün arasında uterus korn çapları tekil doğum yapanlarda 79±1.42 mm’den 10.87±0.5 mm’ye, ikiz doğuranlarda 91±6.58 mm’den 10.63±0.32 mm’ye ve üçüz doğuranlarda 107±3.67 mm’den 11±0.87 mm’ye düştü. Doğum sonrası uterus involüsyonunun tamamlama süresi, tekil, ikiz ve üçüz doğumlarda sırasıyla 30, 35 ve 40 gündü (P0.05). Bu nedenle, farklı batın genişliklerinin, doğum sonrası uterus kornularının iyileşmesi üzerine etkisi, rahim kıkırdağına göre daha büyüktü. Ayrıca, tekil doğum yapan koyunlarda uterus involüsyon oranı, üçüz doğum yapana göre önemli ölçüde daha yüksekti. Bulgularımız, Hu koyunlarının üreme performansının iyileştirilmesi için bir referans sağlamaktadır.

Eff ect of Diff erent Litter Size on Th e Rate of Postpartum Uterine Involution in Hu Sheep

In this study, we investigated the eff ects of diff erent litter sizes on the rate of uterine involution in Hu sheep. Using B-mode ultrasonography, we recorded changes in the uterine horn diameter and the maximum uterine caruncle diameter in 60 primiparous Hu sheep from days 0 to 45 postpartum. Th e uterine horn diameter decreased gradually postpartum from 79±1.42 mm at day 0 to 10.87±0.5 mm at day 45 with singleton parturition, from 91±6.58 mm at day 0 to 10.63±0.32 mm at day 45 with twin parturition, and from 107±3.67 mm at day 0 to 11±0.87 mm at day 45 with triplet parturition. Th e time to complete uterine involution postpartum was 30, 35 and 40 days postpartum in singleton, twin and triplet parturitions, respectively. (P0.05). Th us, diff erent litter sizes had a greater eff ect on postpartum uterine horn recovery than on the uterine caruncle. Furthermore, the rate of uterine involution in ewes with singleton parturition was significantly higher than that with triplet parturition. Our findings provide a reference for improving the reproductive performance of Hu sheep.

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