ABSTRACT
The prerequisite of effective economic management in modern industrial fisheries is increasing their productivity that is directly linked to the use of complete and cost-effective feed. The most important task is to create and use in fish farming the feed, which:
• is maximally needed for the body to ensure its vital functions; • has growth/development stimulating properties as well as prevention and an-
tistress characteristics; • ensures the environmental safety of feed produced. In order to improve the quality of fish mixed feed, some enzyme, probiotic,
prebiotic and probiotic/enzyme combination feed additives are used, as well as complex probiotic preparations enriched with phytocomponents.
