NATURAL SCIENCES

Journal of fundamental
and
applied researches

Wintering of one year old russian sturgeons bred in cages from an active larva

2014. №3, pp. 110-118

Jusupova Adjelja Z. - post-graduate student, Astrakhan State University, 1 Shaumyan Sq., Astrakhan, 414000, Russian Federation, bios94@mail.ru

Vasileva Lidiya M. - D.Sc. (Agriculturae), Director, Research and Education Center “Sturgeon”, 14a Volodarskiy St., Astrakhan, 414000, Russian Federation, bios94@mail.ru

Wintering in the most unfavorable period for fish growth so it is necessary to hold activities to prepare aquatic organisms for winter keeping in order to decrease negative consequences. The studies on assessment of physiological state of 2 year old Russian sturgeons were carried out before the beginning of wintering and after it. The following parameters were comparatively analyzed: fish-cultural, morphometric and gematologicparameters of Russian sturgeons bred in cages under the traditional technology from 30 gram young fish and under the developed technology from an active larva having passed to the active nutrition. The obtained results indicate advantages of the second method. The recommendations on winter keeping conditions for bred sturgeons and fish preparation for wintering were worked out.

Key words: двухгодовики русского осетра, зимовка, активная личинка, рыбоводные, морфометрические, гематологические показатели, комбикорма, рекомендации, 2 year old Russian sturgeons, wintering, active larva, fish-cultural, morphometric and gematologic parameters, co