Ecology, Environment and Conservation Paper

EFFECTS OF IODIZED YEAST AS FEED SUPPLEMENT ON GROWTH AND BLOOD PARAMETERS IN LENA STURGEON (ACIPENCER BAERII STENORRHYNCHUS NICOLSKY) JUVENILES

Yuliya Nikolaevna Zimens , Irina Vasilevna Poddubnaya , Alexey Alekseevich Vasiliev , Yuliya Anatolievna Guseva , Vladimir Valentinovich Kiyashko , Sergey Petrovich Voronin, Dmitriy Sergeevich Voronin and Anatoliy Petrovich Gumeniuk

Abstract

The article presents the results of an experiment on growing of Lena sturgeon (Acipencer baerii stenorrhynchus Nicolsky) juveniles using iodized yeast as a dietary supplement. The experiment was conducted in a recirculation installation facility in research laboratory “Technology of fish feeding and rearing” of Saratov State Agrarian University. The additive used contained iodine in a ration of 2 % by weight to test the relationship between the amount of iodine in food and the level of thyroxine in the blood. Based on the analysis of the dynamics of growth of weight of Lena sturgeon optimal degree of introduction of iodine was determined in the feed, providing growth of fish. The greatest weight gain of Lena sturgeon was observed for use in feeding iodinated yeast with iodine 200 micrograms per 1 kg of fish. The economic substantiation of use in mix feed fish - iodized yeast in an amount of 200 and 300 micrograms of iodine per 1 kg of fish.