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Epidemiology of Metabolic Disorders in Dairy Cattle: Association Among Host Characteristics, Disease, and Production

Section of Epidemiology, Department of Clinical Sciences, New York State College of Veterinary Medicine, Cornell University, Ithaca 14853

C. E. McCulloch

Biometrics Unit, College of Agriculture and Life Sciences, Cornell University, Ithaca 14853

H. S. Saloniemi

College of Veterinary Medicine, Helsinki, Finland

ABSTRACT

Logistic regression was used to investigate the effects of host characteristics, production, and 23 veterinary diagnoses on the odds of contracting seven metabolic disorders among 61,124 Finnish Ayrshire cows that calved during 1983. Cows in higher producing herds were at increased risk of parturient paresis, udder edema, and ketosis. Cows that had higher previous yields were at increased risk of parturient and nonparturient paresis and ketosis. All of the metabolic disorders except udder edema were directly interrelated. Dystocia, prolapsed uterus, other infertility, and abortion were not risk factors for any of the seven metabolic disorders; however, retained placenta, early metritis, traumatic reticuloperitonitis, acute and chronic mastitis, and foot or leg injury each were direct risk factors for at least two metabolic disorders.

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