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Sadi F, Khodamoradi S. The Study of Pregnancy Detection and Fetal Growth by Ultrasound in Shin Bash Sheep. J Altern Vet Med 2024; 7 (22) :1314-1320
URL: http://joavm.kazerun.iau.ir/article-1-191-en.html

Background and aim: The aim of this study was to obtain first time diagnosis of pregnancy and study of fetal development in different times of pregnancy period.
Materials and Methods: 2D ultrasound was performed from day 25 to 120 of gestation in 10 Shin Bash sheep, twice in week from day 25 to 65 and once in week from day 65 to 120 of gestation on eight sheeps. The ultrasonographic images were obtained Sonosite Titan (USA) 2D ultrasound machine.
Results: On the 25th day of gestation, earliest diagnosis of pregnancy was done. On 37th day, clear pictures of conceptus, amniotic membrane, and umbilicus were seen. On 76th day of gestation, internal organs of fetus heart, kidney, liver, urinary bladder, and stomach was seen in image. The scrotum in the male fetus was identified on the 85th day of gestation. Between 109 and 118 days of gestation complete details of internal organs were seen in ultrasonographic images.
Conclusions: Transrectal probe performed better than the transabdominal probe to detect pregnancy. The accuracy of ultrasound was 100% for detecting pregnant and non-pregnant cases. Conceptus changed its shape from 25 to 41 days of gestation, and full identifiable conceptus took its shape on day 41.