The Use of an Ultrasonic Device for Detection of Pregnancy in
the Ewe
A.J. Allison
Invermay Agricultural Research Centre, Mosgiel
E-Mail:
Proceedings of the New Zealand Society of Animal Production. 1971, 31: 180-185
The efficiency of an ultrasonic device in detecting pregnancy
(single or multiple) was examined in three flocks of ewes tested at
intervals of a fortnight. Diagnosis of pregnancy with ewes restrained in
a cradle gave more accurate results than those obtained following
examination of ewes in a sitting position. Diagnostic accuracy was
related to the stage of gestation, very low when ewes were less than 60
days pregnant but very high after 100 days of gestation in ewes examined
in a cradle. There was no relationship between diagnoses made at any
stage of gestation and the number of lambs born per ewe.
Keywords: NZSAPAB;
Last Updated 24-08-2000
