Sheep Hematology from Birth to Maturity III. Serum Calcium, Phosphorus, Magnesium, Sodium and Potassium

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Abstract
Calcium, inorganic phosphorus, magnesium, sodium and potassium levels in serum from birth to maturity were studied in 316 Suffolk, Shropshire, and Hampshire sheep. There were 3827 determinations on samples obtained at 0, 6, 12, 24 and 48 hr.; at 5, 8 and 14 days; at 1, 2, 3, 5, 8 and 12 months; at 2, 3½ and 4½ months of gestation; at parturition and at 14 days postpartum. No significant differences were observed among the three breeds involved or between the 2 years in which the study was conducted. Serum calcium and phosphorus reached maximum concentrations by 2 and 5 days of age, respectively, and decreased throughout maturity. Serum magnesium levels tended to rise during growth and became even more elevated during gestation as compared to birth levels. Potassium concentration in serum decreased slightly as growth and maturation occurred, but the sodium concentration was highly variable from birth to maturity. Copyright © 1965. American Society of Animal Science . Copyright 1965 by American Society of Animal Science

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