INFLUENCE OF BREEDING CONDITIONS RAINBOW TROUT (ONCORHYNCHUS MYKISS) TO ITS NUTRITIONAL VALUE

The aim of this work was assesment of nutrition parameters of marketable rainbow trouts (Oncorhynchus mykiss) produced in the Czech Republic from assorted rearing conditions. Evaluation of these parameters has been realized on fish from three different farms in the Czech Republic. The influence of intensity fish was evaluate in danish type of recirculation system. The object of investigation was formed on the sample of ten fish of each variant. Fish were measured, weighed. Another observed indices were meat yield, broad backedness index, high backedness index, viscerosomatic index, hepatosomatic index, and fulton coefficient. As well as analysis of fish tissue on content dry mass, proteins and fats were rated. All parameters were statistically evaluated with P 0.05 conclusiveness. The influence of surrounding conditions on exterior indices were demonstrated. Meat yield depended on the influence of surrounding conditions. Content of fats and dry mass was vary and depended on the influence of surrounding conditions. The influence of assorted rearing conditions was observed on these parameters: coefficient of Fulton, broad backedness index, high backedness index, viscerosomatic and hepatosomatic index. Any one of the observed parameters was not under the influence of different kind of feeding mixture.