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University of California, Davis, California
Calcium, inorganic phosphorus, and magnesium analyses of the blood serum of foals ranging from birth to 23 months of age were made. It was found that the amounts of calcium and magnesium present in the serum of these young animals were not different from those that have been reported for adult animals.
The inorganic phosphorus content of the foal's serum was higher at birth than that of the mare. There was a rapid rise during the first 2 weeks after birth in the amount of inorganic phosphorus found in the serum of the foal. A maximum was reached when the foals were about 10 weeks of age. From this point on the amount of inorganic phosphorus gradually decreased as the animals became older.
2 In charge of the Kellogg Institute of Animal Husbandry, Pomona, California.
3 Now with the Anderson-Smith Milling Co., San Francisco, California.
Manuscript received 7 February 1940.