However, the breeding or procurement of live feed is labor and cost intensive. Therefore, our goal is to search for additional and alternative feeds for fish larvae.
Dry feeds have been developed for feeding grayling, whitefish, whitefish, brook trout and Arctic char, and rearing methods have been adapted so that rearing can be carried out on a large scale and under intensive conditions.
The basis for the development of larval feeds are biochemical studies on the digestive enzymes of fish, the digestibility of various feed components and the biochemical composition of live feed. The effect of feed components on water quality is also constantly monitored.
In the development of feeds, emphasis is placed on sustainable feed components. The suitability of insect meals as a substitute for fish meal is a key topic. Fish meal as a feed is criticized because it contributes to overfishing of the oceans and, like the alternatives soybean and grain meal, is in food competition with humans. We incorporate meal from soldier fly larvae and mealworms into rearing feed and test it on various fish species.