Contamination of Animal Feed with Residues of HCH and DDT

Monitoring of 105 samples of different feeds from Pubjab (India) revealed 100 and 80% contamination presence of residues of Σ HCH and Σ DDT respectively. Feed concentrate, straw and green fodder showed HCH residues upto 0.26, 2.28 and 0.69 mg kg⁻¹ and DDT residues upto 0.28, 6.70 and 0.35 mg kg⁻¹, respectively. The tolerable contents of 0.02 mg kg⁻¹ beta-HCH and 0.10 mg kg⁻¹ Σ DDT in the feed samples (dry weight basis) were exceeded in about 35% samples, while those of alpha-, gamma- and delta HCH exceeded in about 3% samples. The regulation of pesticide residues within the prescribed limits in animal feed of lactating animals has been suggested.