Journals / Veteriner Bilimleri Dergisi . Eurasian Journal of Veterinary Sciences / 2008 / Cilt: 24 - Sayı: 1

Determination of placentome development and gestational age by ultrasonographic measurement of placentomes in ewes

Koyunlarda plasentomların ultrasonografik ölçümleri ile plasentom gelişimi ve gebelik yaşının belirlenmesi

Pages
29–34
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Besides, because of weak correlation between placentome diameter and gestational age in ewes, it is concluded that, gestational age cannot be determined from diameter of placentome.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The objective of this study was to determine the placentome development during pregnancy and the correlation between placentome diameter and gestational age using transabdominal and transrectal ultrasonography in ewes.
📊
Key Findings & Data:A B-mode, linear array, ultrasonography with 5,0-7,5 MHz rectal transducer was used in this study.
💡
Conclusion & Impact:Besides, because of weak correlation between placentome diameter and gestational age in ewes, it is concluded that, gestational age cannot be determined from diameter of placentome.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:çap · gebelik teşhisi · gebelik

Abstract

The objective of this study was to determine the placentome development during pregnancy and the correlation between placentome diameter and gestational age using transabdominal and transrectal ultrasonography in ewes. A B-mode, linear array, ultrasonography with 5,0-7,5 MHz rectal transducer was used in this study. Examinations were commenced at days 26 to 28 post mating. In this study, fifty pregnant ewes were used. Ultrasonographic examination was performed weekly until birth. Diameters of five placentomes were measured in weekly examinations and then mean diameter was calculated. Among the fifty pregnant ewes, 44 had single pregnancy while six ewes had twin pregnancy. Placentomes were seen since 4th week of pregnancy. Placentomes developed fast in the first weeks of pregnancy and reached maximum diameter in 11th week (3,41 ±0,04 cm). Diameter of placentomes increased during the first weeks of pregnancy but decreased in the second half and decreased to 1,73±0,18 cm before birth. A weak correlation was found between gestational age and diameter of placentome in ewes (regression coefficient, r = 0,540). There was no difference between placentome diameters between single and twin pregnancies (P > 0,05). As a result, placentome development in ewes during pregnancy can easily be determined from 4th week of gestation to birth. Besides, because of weak correlation between placentome diameter and gestational age in ewes, it is concluded that, gestational age cannot be determined from diameter of placentome.

Özet

Bu çalışma, koyunlarda transabdominal ve transrektal ultrasonografi kullanarak gebelik süresince plasentam gelişimini belirlemek, plasentam çapları ile gebelik yaşı arasındaki ilişkiyi tespit etmek amacıyla yapılmıştır. Çalışmada B Mode, linear array, 5,0-7,5 MHz rektal transduceri olan ultrason kullanıldı. Muayenelere çiftleşme sonrasındaki 26 ile 28. günlerde başlandı. Gebe olan 50 koyun çalışmaya dahil edildi. Bu koyunlarda ultrasonografik incelemeler birer hafta arayla olmak üzere doğuma kadar tekrarlandı. Haftalık olarak tekrarlanan muayenelerde 5 plasentomun çapı ölçülerek kaydedildi ve ortalaması hesaplandı. Gebe olarak tespit edilen 50 koyundan 44 tanesi tekiz, 6 tanesi ikiz gebeliğe sahipti. Piasentomlar gebeliğin 4. haftasından itibaren görülmeye başlandı. Plasentomlar gebeliğin ilk haftalarında hızlı bir şekilde gelişti ve gebeliğin 11. haftasında en büyük çapa (3,41±0,04 cm) ulaştı. Plasentam çapları gebeliğin ilk yarısında artarken gebeliğin ikinci yarısında tedricen azalmaya başladı ve doğuma yakın dönemde 1,73±0,18 cm'ye kadar küçüldü. Koyunlarda gebelik yaşı ve plasentam çapı arasında zayıf bir ilişki bulundu (regression katsayısı, r = 0,540). Plasentam çapları bakımından tekiz ve ikiz gebeliğe sahip koyunlar arasında herhangi bir fark tespit edilmedi (P > 0,05), Sonuç olarak, koyunlarda plasentam gelişiminin gebeliğin 4. haftasından doğuma kadarki döneme kadar ultrasonografik muayenelerle kolaylıkla takip edilebileceği, bununla birlikte koyunlarda plasentam çapı ve gebelik yaşı arasındaki zayıf ilişkiden dolayı plasentam çaplarına göre gebelik yaşının belirlenemeyeceği kanısına varıldı.

🔖

Cite This Article

AYDIN, İ., ÇELİK, H. A., ŞENDAĞ, S., DİNÇ, D. A. (2008). Determination of placentome development and gestational age by ultrasonographic measurement of placentomes in ewes. Veteriner Bilimleri Dergisi . Eurasian Journal of Veterinary Sciences, Cilt: 24 - Sayı: 1, 29–34. https://ajindex.com/articles/333045

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (14)

  1. Aiumlamai, S., Fredriksson, G., Nilsfors, L. (1992). Real-time ultrasonography for determining the gestational age of ewes. Vet. Rec, 131, 560-562.
  2. Ali, A., Hayder, M. (2007). Ultrasonographic assessment of embryonic, fetal and placental development in Ossimi sheep. Small Rum. Res., 73, 277-282.
  3. Bhattacharyya, B.K., Mazunder, B.K., Mazunder, A., Luktuke, S.N. (1983). A note on morphological characteristics of foetal membrane in Pashmina goats. Indian Vet. J., 60, 457-458.
  4. Bretzlaff, K., Edwards, J., Forrest, D., Nuti, L. (1993). Ultrasonographic determination of pregnancy in small ruminants. Vet. Med., 88, 12-24.
  5. Buckrell, B.C. (1988). Application of ultrasonography in reproduction in sheep and goats. Theriogenoiogy, 29,71-83.
  6. Buckrell, B.C., Bonnett, B.N., Johnson, W.H. (1986). The use of reai-time ultrasound rectally for early pregnancy diagnosis in sheep. Theriogenoiogy, 25, 665-673.
  7. Doize, F., Vaillancourt, D., Carabin, H., Belanger, D. (1997). Determination of gestational age in sheep and goats using transrectal ultrasonographic measurement of placentomes. Theriogenoiogy, 48, 449-460.
  8. Garcia, A., Neary, M.K., Kelly, G.R., Pierson, R.A. (1993). Accuracy of ultrasonography in early pregnancy diagnosis in the ewe. Theriogenoiogy, 39, 847-861.
  9. Goel, A.K., Agrawal, K.P. (1992). A review of pregnancy diagnosis techniques in sheep and goats. Small Rumin. Res., 9, 255-264.
  10. Gonzalez de Bulnes, A., Santiago Moreno, J., Lopez Sebastian, A. (1998). Estimation of fetal development in Manchega dairy ewes by transrectal ultrasonographic measurements. Small Rumin. Res., 27,243-250.
  11. Grazul-Bilska, A.T., Pant, D., Luther, J.S., Borowicz, P.P., Navanukraw, C, Caton, J.S., Ward, M.A., Redmer, D.A., Reynolds, L.P. (2006). Pregnancy rates and gravid uterine parameters in single, twin and triplet pregnancies in naturally bred ewes and ewes after transfer of in vitro produced embryos. Anim. Reprod. Sci., 92, 268-283.
  12. Grunert, E. (1986). Etiology and Pathogenesis of Retained Bovine Placenta. In "Current Therapy in Theriogenoiogy", Ed. Morrow, D.A., W.B. Saunders Company, Philadelphia. Haibel, G.K. (1988). Real-time ultrasonic fetal head measurement and gestational age in dairy goats. Theriogenoiogy, 30, 1053-1057.
  13. Haibel, G.K. (1990). Use of ultrasonography in reproductive management of sheep and goat herds. Vet. Clin. North Am. Food Anim. Pract, 6, 597-613.
  14. Haibel, G.K., Perkins, N.R. (1989). Real-time ultrasonic biparietal diameter of second trimester Suffolk and Finn sheep