Accumulations of Certain Pesticides in Adipose Tissues and Performance of Angus, Hereford and Holstein Steers Fed Apple Processing Wastes

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Abstract
The handling and disposal of solid horticultural waste is rapidly becoming an important cost item for processors. The nutritive value of apple waste has been reported by several researchers (Atkeson and Anderson, 1927; Knott, Hodgson and Ellington, 1932; Burris and Priode, 1957). However, because of the content of several pesticides in apple waste, especially DDT [1,1,1-trichloro-2,2-bis(p-chlorophenyl) ethane], and metabolites such as DDE [1,1-dichloro-2,2-bis(p-chlorophenyl) ethylene] and TDE [1,1-dichloro-2,2-bis(p-chlorophenyl) ethane], the safety of feeding processing wastes to livestock has been questioned. Bovard et al. (1961) reported mean DDT residues of 75.7 ppm in fat of steers fed apple waste containing up to 40 ppm of total DDT. The present FDA tolerance is 7.0 ppm of total DDT in carcass depot fats for human consumption, and apple waste is not an approved livestock feed. However, as pointed out by Abelson (1969), the amount of DDT used in the United States in 1967 was approximately one-half that used in 1959. Copyright © 1970. American Society of Animal Science . Copyright 1970 by American Society of Animal Science

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