THE IMAGE OF EMBRYO AND FETAL OF ETAWA CROSSBRED GOATS USING ULTRASONOGRAPHY AT DIFFERENT GESTATIONAL AGES

This study aimed to estimate the gestational age of Etawa crossbred goats based on ultrasound images of embryo and fetal using transcutaneous ultrasonography. Etawa crossbred does (n= 5) were synchronized using double PGF2α injection with 10 days interval and mated naturally. Early pregnancy was diagnosed on 20th day after mating base on isoechogenic image of the embryo (2.65±0.75 mm) and hypoechogenic appearance of gestational sac. On 30th day of the first trimester, the embryo size was 8.31±0.42 mm. The embryo reached 10.44±0.51 mm on 35th day. On 60th day, the existence of the fetal were clearly appeared along with isoechogenic of umbilical cord, hyperechogenic os cranium (25.5±0.1 mm), and body length (51.83±1.59 mm). On 75th day, the diameter of the os cranium was 33.03±0.20 mm, body length of 110±1.73 mm, and bones structures appeared hyperechogenic for os thoracalis and os vertebrae. The placenta was isoechogenoic with diameter of 23.3±0.2 mm. On 90th day, the placenta dominated the uterus (22.67±1.70 mm) and reached its maximum diameter on 145th day (33.73±2.91 mm). In conclusion, early pregnancy detection of Etawa crossbred goats using transcutaneous ultrasonography could be performed on 20th day after mating