%0 Journal Article %T ECONOMIC EFFICIENCY OF FOUR YEARLING AND FIVE YEARLING RUSSIAN STURGEON BREEDING IN POND FISHING FARMS IN THE SOUTHERN KAZAKHSTAN %A Asylbekova, S.. %A Badryzlova, N.. %A Didenko, T.. %A Isbekov, K.. %A Fedorov, E.. %K sturgeon breeding, breeding in ponds, Russian sturgeon, three yearlings, four-years-old, four yearlings, five yearlings, production costs, profitability, biological effectiveness of commercial breeding %J Vestnik of Astrakhan State Technical University. Series: Fishing industry %D 2015 %N 2015 %P 8 %I Astrakhan State Technical University