J. Anim Sci.
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J. Anim Sci. 1969. 29:900-905.
© 1969 American Society of Animal Science
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Effects of Dietary Calcium and Zinc on Calcium, Phosphorus and Zinc Retention in Swine

D. P. Morgan1, E. P. Young2, I. P. Earle3, R. J. Davey4 and J. W. Stevenson5

U. S. Department of Agriculture,4 and University of Maryland,2

Abstract

An association between high calcium content in swine diets and intensified symptoms of dermatitis was reported by Ellis (1953). Raper and Curtin (1953) found that a zinc-cobalt mixture had protective effects against the condition. High dietary calcium levels without supplemental zinc have resulted in poor weight gains and feed utilization and a high incidence of parakeratosis (Hoekstra, 1955). Definite improvement was noted when additional dietary zinc was provided (Tucker and Salmon, 1955). Low dietary phosphorus did not appear to be responsible for the smaller weight gains of pigs fed high calcium levels, according to data reviewed by Forbes (1960). Cabell and Earle (1965) found no significant difference in the growth rate of rats due to zinc level when dietary calcium and phosphorus were low. High calcium or phosphorus increased the requirement for zinc. Calcium retention increased with the addition of zinc to swine diets, but zinc had no influence on phosphorus retention nor was retention of absorbed zinc affected by increased dietary calcium (Whiting and Bezeau, 1958).

Footnotes

1 Data were taken from a thesis submitted by the senior author to the Graduate School of the University of Maryland in partial fulfillment of the requirements for the Master of Science degree. Present address: Educational Services Branch, Information Division, Agricultural Research Service, Beltsville, Maryland 20705.

2 Department of Animal Science, University of Maryland, College Park.

3 Present address: 4121 Greencastle Road, Laurel, Maryland 20810.

4 Swine Research Branch, Animal Husbandry Research Division, Agricultural Research Service, Beltsville, Maryland 20705.

5 Present address: Institute of Applied Agriculture, University of Maryland, College Park.






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