INFLUENCE OF THE REARING CONDITIONS ON THE STERLET (ACIPENSER RUTHENUS (LINNAEUS)) MORPHOLOGICAL AND BIOLOGICAL PARAMETERS
Journal Title: Наукові доповіді НУБіП України - Year 2018, Vol 4, Issue 4
Abstract
Paper shows research data considering investigation and analysis of specific technological parameters due to external and internal marks of sterlet. Our research goal is to analyze influence of specific sterlet rearing conditions on the morphological, biochemical and hematological marks. Sterlet fry and fingerlings were the object of investigation. Analysis of hydrochemical, morphometric and fishery marks was made according to well-known methods. Our research demonstrated that the most optimal variance was obtained in ponds where both organic and inorganic fertilizers were injected. This allowed us to receive sterlet fingerlings having AIB 4,17 g, survival rate – 69.55%, fish productivity – 267.61 kg/ha, protein rate was 15,0-15,4%. Also we investigated influence of rearing conditions in ponds of different fish farms on the separate blood marks. We defined reasonable correlation between level of intensification and main fishery indexes, such as bodymass, fish productivity and survival rate and biochemical marks. Obtained data complement existing technology of sterlet combined rearing in ponds of Southern Ukraine due to its later introduction into natural water reservoirs. Also obtained data may be used in modern aquaculture according to its rearing goals.
Authors and Affiliations
G. Bilyk, N. Grudko, I. Sherman
Keywords
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