Residues of compound 4072 in milk and meat of cattle held in barns treated with residual sprays.

Abstract

Beef calves and lactating dairy cows were held in rooms treated with 0.5, 2.5, or 5% Compound 4072 (2-chlaro-1-(2,4-dichlorophenyl) vinyl diethyl phosphate) at a rate of 1 gal/500 ft.2 No residues of Compound 4072 Were found in fat or tissue samples of animals exposed to the 0.5% spray or in the milk of cows held in any of the sprayed rooms. The small residues in the omental fat of calves exposed to the 2.5 and 5% sprays had disappeared at 32 days posttreatment.