Lindane Residues in Chickens and Eggs Following Poultry House Sprays

Abstract

Studies were made to determine lindane residues in the fat and eggs of chickens confined in houses sprayed with 1% suspensions of the insecticide. Two experiments were conducted at Kerrville, Texas. Tn the first, during the summer of 1958, the interior of a poultry house was thoroughly sprayed at the rate of 1 gallon per 100 square feet. In the second, during the winter of 1959-1960, a light application was made at the rate of 1 gallon per 1000 square feet. The heavy application caused residues in the fat that averaged 131 p.p.m. at 1 week after the house was sprayed and 07 p.p.m. at 16 weeks. The residues in the eggs varied from 13 to 20 p.p.m. during 12 weeks, but no decrease was evident at 12 weeks. Although the light application caused lower amounts of lindane in both fat and eggs, significant residues were still present in the eggs 16 weeks and in the fat 20 weeks after the house was sprayed.