Abstract
Summary
Alkaline phosphatase activity in the serum of 41 pigs was studied at 1, 2, 7, 14 and/or 28 days post-partum. Individual values were highly variable both within and between litters. Activity generally, but not always, decreased after birth. Negative values of .53 and .33 were obtained when serum phosphatase activity was correlated with body weight and serum protein concentration, respectively. Storage of serum at 5°C for 18 hours significantly increased phosphatase activity. Serum collected at 1, 7 or 14 days post-partum significantly decreased in phosphatase activity during 5 weeks of storage at −20°C.
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