Bio accumulation of lindane in tissues of broilers and piglets

Abstract

This paper describes a study of the degree of bioconcentration of an organochlorine insecticide called Lindane in tissues of broilers and piglets from known amounts of Lindane-contaminated feed mixes. In commercial feed mixes, for both animal groups, residues of Lindane were found in aproximately 100-200 times lower concentrations than those cited in the Book of Regulations. This information shows that the allowed concentration of Lindane in feed is too high. Residual content in all the examined kinds of samples of the experimental group of the animals, that were fed over 30 days, is two times lower than the concentration citated in the Book of Regulations, was higher than the permitted concentration of Lindane. Increase of the residual content of Lindane in the tissues of broilers was 30-338 times, and for the piglets 50-820 times higher than it was in control groups. Feeding of broilers with Lindane lasted 30 days, and the usual period of feeding the broilers is about 50 days. For 30 days the piglets were fed with feed that contains Lindane, but the regular time of fettening is 6 times longer. It can only be presuposed what is the residual content of Lindane that animals received through feed during the period of fettening, because this insecticide shows a distinct ability for bioacumulation and high stability in fat. The method of gas chromatography has given satisfactory results for determining of residual Lindane. The regulated contentration of Lindane in the Book of Regulations for maximal concentration of harmful substances and components in feed is unreal and too high, so feeding the animals with this feed would make the concentration of bioresidues higher than it is allowed for the food of animal origin.