Effects of Feeding TH-6040 to Two Breeds of Chickens2

Abstract

Thompson-Hayward TH-6040 (Dimilin®); (N-(4-chlorophenyl)-N′-(2,6-difluorobenzoyl) urea) was fed to White Leghorn and Black Sexlinked Cross hens at a level of 10 ppm in the ration. Detectable residues were found in eggs, liver, and visceral fat; residues were significantly higher in the White Leghorns. The TH-6040 in eggs did not affect fertility or hatchability.