J. Anim Sci.
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J. Anim Sci. 1961. 20:824-826.
© 1961 American Society of Animal Science
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DDT Residues in the Internal Fat of Beef Cattle Fed Contaminated Apple Pomace

K. P. Bovard1, B. M. Priode2, G. E. Whitmore3 and A. J. Ackerman4, 5,

Virginia Agricultural Experiment Station, Front Royal and United States Department of Agriculture

Abstract

Six yearling heifers were fed dried apple pomace known to be contaminated with 103 ppm DDT. Samples of internal fat were taken from each animal before, during, and following the apple pomace feeding period of 104 days. A 10-fold excess of the permissible legal tolerance of DDT (7 ppm) accumulated internally with no visible manifestation of toxicity to the cattle. Excessive residues thus attained are slowly dissipated, average residues being 8.6 ppm when the cattle were slaughtered 566 days after last receiving pomace.

Footnotes

1 Virginia Agricultural Experiment Station, Beef Cattle Research Station, Front Royal, Virginia.

2 Beef Cattle Research Branch, Animal Husbandry Research Division, Ars, Beef Cattle Research Station, Front Royal, Virginia.

3 Animal Husbandry Research Division, ARS, Agricultural Research Center, Beltsville, Maryland.

4 Entomology Research Division, ARS, Agricultural Research Center, Beltsville, Maryland.

5 Apple pomace was donated by National Fruit Product Company, Winchester, Virginia.




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