J. Anim Sci.
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J. Anim Sci. 1956. 15:752-764.
© 1956 American Society of Animal Science
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The Relationship of Parakeratosis, Supplemental Calcium and Zinc to the Zinc Content of Certain Body Components of Swine1

W. G. Hoekstra, P. K. Lewis, Jr., P. H. Phillips and R. H. Grummer

University of Wisconsin2

Abstract

  1. Parakeratosis of swine was antagonized by adding 2% bone meal to a basal ration and was greatly alleviated by the supplementation of the ration with SO ppm of zinc as zinc sulfate.
  2. Zinc supplementation had no effect on the zinc content of packed erythrocytes, spleen, intestine, or pancreas.
  3. Adding zinc to the ration increased the zinc concentrations in blood plasma, liver, and kidney.
  4. When no supplemental zinc was fed, the addition of 2% bone meal to the ration did not significantly alter the zinc content of erythrocytes, blood plasma, liver, kidney, spleen, intestine, or pancreas.
  5. When 50 ppm of additional zinc was fed, supplementation of the ration with 2% bone meal decreased the zinc concentrations of liver and kidney, but had no significant effect on the amount of zinc present in erythrocytes, spleen, intestine, or pancreas.
  6. The addition of 2% bone meal to the ration had no effect on the pH of the contents of the upper or lower small intestine or the large intestine, but in this experiment appeared to slightly increase the pH of the stomach contents.
  7. Zinc supplementation appeared to slightly lower the pH of the contents of the large intestine but had no consistent effect on the pH in the stomach or in the upper or lower portion of the small intestine.

Footnotes

1 Published with the approval of the Director of the Wisconsin Agricultural Experiment Station, Madison. Supported in part by American Cyanamid Co., Pearl River, N. Y.

2 Contributions from the Departments of Biochemistry and Animal Husbandry, Madison.






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Copyright © 1956 by the American Society of Animal Science.