Влияние плотности посадки на морфометрические показатели личинок ленского осетра в условиях Республики Беларусь
2011
Konchits, V.V., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus). Institute for Fish Industry | Usova, O.V., Belarus State Academy of Agriculture, Gorki (Belarus)
The results of the studies examined the biological characteristics of larvae of Siberian sturgeon (Acipenser baeri) when grown in nurseries and there were determined the optimal parameters for their rearing in the Republic of Belarus. In course of the study there was presented a characteristic of properties of prolarvae before their stocking for maturation; characteristic of properties of 8-day old prolarvae before full decomposition of yolk bag; characteristic of properties of 30-day old larvae of Siberian sturgeon; characteristic of properties of 26-day old larvae after full decomposition of yolk bag. It was established that morphometric parameters of juvenile Siberian sturgeon depended on abiotic and biotic factors. Planting density within a certain range could influence on the survival of larvae and the dynamics of the size and weight indicators. The most economically efficient and rational during curing and transition to artificial feed were stocking densities of 6.0 and 2.0 thousand pieces/square meter respectively. Survival rate in this case was more than 77% and 67% and it requires much less area.
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