The relationship between serum immunoglobulin values and incidence of respiratory disease and enteritis in calves.

Serum immunoglobulin levels were tested in 193 neonatal calves by use of the glutaraldehyde coagulation test. Hypo- and agammaglobulinaemia was found in 26.4% of the calves. A close relationship was found between immunoglobulin levels and the incidence of enteritis and mortality, while the number of calves suffering from both enteritis and respiratory disease was higher in immunoglobulin-deficient calves. The application of specific preventive measures to immunoglobulin-deficient calves is discussed.