Association of parturient hypocalcemia with eight periparturient disorders in Holstein cows
Curtis, C.R.; Erb, H.N.; Sniffen, C.J.; Smith, R.D.; Powers, P.A.; Smith, M.C.; White, M.E.; Hillman, R.B.; Pearson, E.J.
Journal of the American Veterinary Medical Association 183(5): 559-561
1983
ISSN/ISBN: 0003-1488 PMID: 6618988 Document Number: 203455
The association between parturient hypocalcaemia and eight periparturient disorders (dystocia, retained fetal placenta, metritis, left displaced abomasum, foot problems, ketosis, mastitis, and coliform mastitis) was evaluated in 33 Holstein dairy herds (2190 cows) that calved from March 1981, to February, 1982. There were highly significant associations between parturient hypocalcaemia and dystocia, retained fetal placenta, ketosis, and mastitis. The odds ratios (multiplicative increases in occurrence) for these associations were 6.5, 3.2, 8.9, and 8.1, respectively. There was a significant association between parturient paresis and coliform mastitis (odds ratio, 9.0). There was a tendency for association with left displaced abomasum (odds ratio, 3.4).