EARLY-PREGNANCY DIAGNOSIS IN EWES

Estrus was synchronized in 22 ewes of different breeds using the Veram ix system during the anoestrous season and early pregnancy diagnosis w as made on the basis of high plasma progesterone concentration at 16/1 8 and 21 days after mating. The general accuracy, sensitivity and spec ificity of the radioimmunoassay of plasma progesterone for early pregn ancy diagnosis were 81.82, 88.22 and 60%, respectively, and diagnosis of pregnancy was confirmed by real-time ultrasound scanning at 90 or 1 20 days after mating or lambing results. Ultrasound scanning was 100% effective in the pregnancy diagnosis et the examined ewes.