Aplikace a využití krmiv v intenzivním chovu candáta obecného

PĚNKA, Tomáš

The application and use of feed in intensive fish farming are key to optimizing production and ensuring healthy growth and good condition of farmed fish. Pikeperch, which feeds mainly on smaller fish in the open waters, requires a diet rich in animal protein. Adapting these diets to intensive farming conditions is essential. Effective feeding strategies include not only the correct feed composition, but also the adaptation of light conditions and other environmental factors. Optimizing the feeding regime, including feeding frequency and daily feed ration, is key to successful farming of juvenile zander. The results of the experiments showed that an eight-hour feeding interval resulted in a high specific growth rate, good feed conversion, high survival rate and low growth heterogeneity. Restricting the daily feed ration was suitable for different fish sizes and led to more uniform growth and lower levels of aggression. The addition of 2% yeast hydrolysate to a soy meal-based feed successfully replaced fish meal without any negative effects on fish growth and health. Mixed bicultural stocks in RAS, such as a combination of pike-perch and Russian sturgeon, have brought mutual benefits and improved feeding efficiency. This approach supports sustainable and efficient fish farming methods. In conclusion, it can be stated that the correct feeding frequency and daily feed ration are key to ensuring healthy growth and good condition of fish, and the addition of yeast hydrolysate can positively affect the sustainability and economic efficiency of production.

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