Ultrasonic techniques can be used with great accuracy for the detection of pregnancy in ewes which are at least 65 days pregnant. The Doppler technique resulted in a greater accuracy in the detection of pregnancy than did the Amplitude-depth ultrasound technique. These two techniques may be used simultaneously to detect reproductive tract abnormalities. Prediction of multiple pregnancies was not successful with either technique. Pregnancy was detected as early as 115 days before lambing with both techniques.
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