DETERMINATION OF EARLY PREGNANCY IN EWES UTILIZING TRANSABDOMINAL ULTRASONOGRAPHY

Document Type : Original Article

Authors

Dep. Anim. Reprod. & A. I. National Research Centre, Cairo, Egypt.

Abstract

Transabdominal ultrasonography was used in ewes to determine the earliest day at which pregnancy could be detected as well as the number and viability of fetuses present. The present investigation was carried out on 7 Barki ewes during non breeding season. Induction of oestrus was performed using a progesterone releasing intravaginal sponge plus 750 1.u. PMSG at the time of sponge removal. Ewes were monitored for oestrus and naturally mated. Transabdominal ultrasonography was utilized on day 10,35 and 100 of gestation. 3.5 - 5.0 MHZ transducer was utilized. The results indicated that 71.43% of ewes showed oestrus symptomes 62. hrs after the end of treatment. Moreover, transabdominal ultrasonography on day 10 post oestrus clearly demonstrated and faciliated counting the number of corpora lutea and unovulated follicles present on the ovaries of responded ewes. In addition, on day 35 after mating, pregnancy was diagnosed in 3 out of 5S _ flocks where service recording is not possible ewes (60%) one of them was twin pregnancy. Also, the viability and fetal heart beat can be detected by day 35 of pregnancy. On day 100 of pregnancy placentomes and viability of fetuses can be easly detected, however, it is difficult to predict twin pregnancy as a result of increasing fetal size. In conclusion, transabdominal ultrasonography scanning can be easily utilized for prediction of the early pregnancy diagnosis(day 35) in ewes and for detection the viability of fetuses during late stage of gestation.

Main Subjects

Veterinary Medical Journal (Giza)
Volume 45, Issue 1
January 1997
Pages 129-135

Files

Share

How to cite

Statistics