Abstract

This study was conducted using ultrasonographic imaging of real-time B mode ultrasound system equipped with (7.5) MHz linear array traducer for the early diagnosis of pregnancy during breeding season 2011-2012 in a flock of 255 Damascus goats (multiparous=202, nullparous=53) in Humaimeh research station belonging to General Commission for agricultural scientific research (Damascus-Syria), aged between 10 months and 7 years naturally mated; thus the day of insemination by the buck was considered as day 0 of gestation. Also, this study include fetal measurement on 85 (multiparous=63, nullparous =22). Ultrasonography was performed principally transabdominaly (TA) and completed transrectaly (TR) without any preparations for verification of negative results. The examination by TR and TA examination revealed 98.4% of does were pregnant, with accuracy in detecting of pregnancy for positive and negative cases 97.3% and 80% respectively. Transrectaly (TR) examination allowed confirmation of reported negative results and recognition of some positive results (false negative) and thus correction of (TA) results by monitoring fluid-filled (GS) in the uterus or cotyledons or fetal structures. Concerning fetometry, the correlation between gestational age (27-86 days) and placentomes diameter was positive (R=0.83), but middle for vesicules diameter and bi-parietal diameter (R=0.43; R=0.42 respectively), and poor (R=0.05) for crown-rump length. Also, the use of 7.5 MHz linear array traducer for transabdominaly examination was found to be efficient, reliable for early recognition of gestation and different fetal measurements between 35 and 126 days of gestation.