The study aimed at finding out how to replace the unstable iodine additives by the stable ones in feeding of laying hens. The control hens received potassium iodide (1 mg of iodine/kg of feed), the feed of trial groups was supplemented with dry stable concentrated iodine "Jodis" (1 mg and 4 mg of iodine/kg of feed). In the control group the amount of iodine in eggs was 5.8 µg/100 g, in the trial groups - 7.2 and 17.2 µg/100 g (by 24% and 196 % more), respectively. The amount of iodine was 0.8 µg/100 g in the liver of control layers; 0.9 and 1.0 µg/100 g in the liver of trial groups (by 12.5% and 25.0 % more), respectively.
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