Abstract
Summary Clinical observations were made during the puerperium of 107 attested cows and heifers. The motility of the involuting uterus was studied in 50 cases and the action of drugs on uterine contractions in a further 22. . The normal. patterns of uterine motility during the first 1 2 hours-after expulsion of the foetus and during the later periods are described. In seven cases in which the puerperium was abnormal, uterine contractions are compared with the normal pattern. No significant changes in uterine contractions was observed during periods when the cow was allowed to lick the calf or during suckling. The actions of pituitarv extract, stilboestrol and. other drugs on uterine motility during the normal and abnormal puerperium are described. Evidence is advanced to support the view that retention of the foetal membranes is associated with reduced uterine motility within 24 hours after calving.
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