Transfer of HCH Isomers from Feed into Milk of Indian Buffalo Bubalus hubalis L.

Analysis of milk of four groups of Indian buffaloes fed daily with 10 mg each of alpha-, beta-, gamma- and delta-HCH fof 101 d, rerealed that tht pesticide desidues in milk after showing an initial sharp increase attained equilibrium level. For a period showing steady level of residues, an average of 4.9, 36.6, 2.7 and 8.3% of the administered alpha-, beta-, gamma-and delta-HCH, espectively were eetected di milk. After rhe eermination nofeeding with contaminated rations, the residues of gamma-HCH declined at the fastest rate followed by alpha-, delta- and beta- HCH in the decreasing order. The maximum tolerable limits of individual isomers in animal feed were derived from their legal limits in milk and accumulation coefficients. It is considered that the compliance with these values would ensure the supply of milk of acceptable quality.