Pregnancy diagnosis in does and ewes

Abstract

Two hundred and three does and 112 ewes submitted to breeding season from October 1 to November 29 in 1980, were used for an experiment to test efficiency of ultrasonic method in diagnosing pregnancy. The results are presented according to species and breeds of dams as also according to the age of fetus, when the diagnosis was carried out. In goats, when the mean age of fetus was 109, 5 days, the diagnosis was accurate in 93,10 percent cases; 84,27 percent in case of pregnant and 100 percent in case of non-pregnant does. In ewes, at 92,2 days mean age of fetus, overall accuracy was 91,95 percent; 100 percent in case of pregnant and 50,09 percent in non-pregnant ewes. Thus, in goats the rate of accuracy was more in pregnant females, whereas in sheep it was more in non-pregnant female. The minimum age of fetus at which pregnancy diagnosis was possible was 53 days in ewes and 86 days in does.