In one study two cases of premature expulsion of the placenta were recorded among 60 supervised calvings (3.3 per cent); both calves died. In a second study, 47 cases were recorded among 332 cases of perinatal mortality (14.2 per cent). The condition was associated with fetal malpresentation and malposture, and mortality either before or during parturition. There was no significant relationship between the occurrence of premature expulsion of the placenta and parity, calving difficulty, previous calving history or the sex of the calf. The condition in cattle is compared with placenta praevia in women.

Abruptio Placentae↗

PubMed1991

Weak calf syndrome.

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Animals↗

PubMed1991

Tilmicosin and calf pneumonia.

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Animals↗

PubMed1990

Premature placental expulsion.

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Animals↗

PubMed1990

Holoacardius amorphus totalis in two Friesian cows carrying natural and induced twins.

Two cases of holoacardius amorphus totalis are described and the classification, epidemiology, aetiology and pathophysiology of the condition are reviewed. One case is the first reported example of holoacardius amorphus totalis in a dairy cow carrying twins induced by embryo transfer.

Abnormalities, Severe Teratoid↗

PubMed1990