Growth Potential of Swine as Measured by Serum Alkaline Phosphatase

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Abstract
The phosphatase activity of 321 pigs was determined when they were 1 and 7 days of age. Both birth weight and phosphatase activities were correlated with weaning weight at 56 days. A significant, but small, correlation coefficient (r=0.31) was found between birth weight and weaning weight. Male pigs weighed significantly more than female pigs at birth, but there were no significant sex differences in 56-day weaning weights. Phosphatase activity at either 1 or 7 days of age was not significantly correlated with weaning weight. At 1 day of age female pigs exhibited a significantly higher phosphatase activity than male pigs. No sex differences were found in the 7th day determinations. A significant difference among breeds was found with all criteria studied. Copyright © . .

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