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OJVRTM
Online Journal of Veterinary Research©
Volume (9):935-941, 2019.
Outbreak
of primary pregnancy toxemia in ewes due to misdiagnosis of pregnancy by ultrasonography.
Alidadi
N, DVM DVSc, Rafia S and Moaddab SH, DVM.
Department of Clinical Sciences, Faculty of Veterinary Medicine,
University of Tehran, Tehran, Iran.
ABSTRACT
Alidadi N, Rafia S, Moaddab
SH., Outbreak of primary pregnancy toxemia in ewes due to misdiagnosis of pregnancy
by ultrasonography, Onl J Vet Res., (9):935-941, 2019. Four referred ewes were examined for recumbency
and depressive nervous signs. Recognized as non-pregnant by transabdominal
ultrasonography, the ewes had been separated from pregnant ones ~4 months before and put
on a low energy diet. However, late twin pregnancy was detected on abdominal
palpation. Pregnancy toxemia was confirmed by epidemiology, clinical findings,
necropsy, biochemistry and histopathology. Eight more ewes in the non-pregnant
flock were consequently mis-diagnosed. Diagnosis of
pregnancy in ewes by ultrasonography is a useful tool in reducing the costs of
sheep rearing and usually has a high rate of accuracy (95-98%). However as highlighted
in this case report subject to technician experience and authors recommend a
repeat scan or follow up of non-pregnant ewes.
Key words: Ewe, Pregnancy Toxemia, Outbreak, Pregnancy Diagnosis,
Ultrasonography.
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