Residues in Poultry Tissues from Low Level Feeding of Five Chlorinated Hydrocarbon Insecticides to Hens

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Abstract
Lindane, heptachlor epoxide, dieldrin, endrin, and DDT were fed in combination at 3 levels (0.05, 0.15, and 0.45 ppm) to hens, and residues were determined in abdominal fat, breast muscle, and livers by electron capture gas chromatography. Tissue samples were taken from birds at each feeding level and a control at regular intervals during a 5-month period which included 2 weeks pre-fortification, 14 weeks on the fortified feed, and 1 month withdrawal. Graphic data on fat and breast muscle show the increase of residues with time to an approximate plateau and the rate of decline. The greatest storage was in the fatty tissue where dieldrin and heptachlor epoxide attained a level approximately ten times the respective levels in the feed; endrin, p,p'- DDT, and lindane stored to a lesser degree. All residues in breast tissue were < 0.1 ppm, but the feeding levels were clearly delineated. AH residues in liver were < 1.0 ppm. The respective storage tendencies of the pesticides were the same in all tissues. A significant increase in the DDT metabolites, DDE and DDD, were observed. Lindane residues showed the greatest decline rate.

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