The effect of feeding breeding stock of rainbow trout with Ganaminovit on the survival of fertilized eggs and pre-larvae


  • N. Grynevych Belotserkovskii national agrarian university, Soborna sq., 8/1, Bila Tserkva, 09111
Keywords: rainbow trout, vitamin supplement, breeding stock, stage of the eye, pre-larvae, extruded feed

Abstract

The aim of research was a study the effect of influence of feeding by feed supplement of Ganaminovit the breeding stock of rainbow trout on the state of fertilized eggs and pre-larvae. The task of research was to study influence of Ganaminovit on the survival of fertilized eggs and on the productive effect of larvae in the conditions of the closed water-supply. The breeding stock of rainbow trout were fed by the extruded mixed fodders with Ganaminovit in 2015 during two months to and after spawning and in 2016 before spawning. The influence of feeding rainbow trout breeding stock, along with extruded feed vitamin supplements – Ganaminovit on the survival rate of fertilized eggs and pre-larvae for the mass of 0.3 g. It is established that in conditions of closed water system in the pre-spawning and after-spawning periods of the breeding stock of rainbow trout requires additional vitamin supplements, other than those included in the modern extruded food. The introduction supplements for two months, before incubation, promotes more rapid recovery of the body in after-spawning period and enhances immunity and high survival rates of eggs and of pre-larvae for the mass of 0.3 g. Mortality of eggs in the control group of breeding stock at the stage of the eye was 61.7%, and the increase of weight of the larvae during transition to active feeding in 2015–0,041 g. In 2016, these figures were higher and amounted to respectively 79.4% of and 0.052 g.

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Published
2017-01-04
How to Cite
Grynevych, N. (2017). The effect of feeding breeding stock of rainbow trout with Ganaminovit on the survival of fertilized eggs and pre-larvae. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Veterinary Sciences, 19(73), 33-36. https://doi.org/10.15421/nvlvet7307