ABSTRACT
The effect of supplemental dietary potassium iodide on milk iodine residues was studied in forty early lactating Friesian cows. These animals were divided into 2 equal groups, a control group receiving no iodine supplement and an iodine supplemented group of 0.2 mg/kg body weight daily and continued for seven weeks. Iodine supplementation resulted in high milk iodine residues [662.33 + 13.71 ug/L] as evaluated according to Committee of Dietary Allowance and may be pose human health threat. Another experiment was undertaken to determine the influence of iodophor teat dips on milk iodine residues. Thirty lactating Friesian cows were assigned into 3 equal groups. A control group and two iodophoe teat dipped groups, one of each was dipped prior to milking and another after milking. The obtained data indicated that premilking iodophor teat dips with subsequent drying of teat added insignificantly increased amount of iodine to milk, while post-milking iodophor teat dips significantly increased milk iodine values, but did not cause a large increase above the established safe limit submitted by International St and ard of National Research Council and Committee of Dietary Allowance. The public health importance of high milk iodine residues as well as the suggested measures for safeguard and the consumers were discussed