FIELD: veterinary medicine.
SUBSTANCE: method provides for blood drawing in calves within 24 hours after birth, determination in the serum of calcium and magnesium content, calculating calcium-magnesium ratio. In case of the values of the calcium-magnesium ratio in the serum less than 3.50:1, the development of respiratory diseases is predicted in calves.
EFFECT: method enables to predict the development of respiratory diseases in newborn calves at early stages.
8 tbl, 2 ex
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