Analysis on the use of new ingredients in trout feed

The fodder for captive-bred trout contains ingredients such as fish oil, fishmeal, blood meal, peas, soybeans, wheat, oats, rapeseed, animal protein. The quality of the ingredients is the basis of healthy, mineralizing, protein and vitaminizing feeds. Excessive use of fishmeal in the market puts pressure on the fisheries sector, which is struggling to meet demand. Algae, crustaceans, aquatic plants, insects and seeds are ingredients that could replace fishmeal by helping the fishing industry as well as sustainability of the aquatic environment. In the process of feeding trout with new, experimental feed, research has highlighted the importance of several factors for the development and growth of fish. The level of protein in the feed directly affects the body weight of the trout and the replacement of fishmeal and fish oil with other types of flour and oils can lead to a change in the taste of trout meat. Feeding and control can be of particular importance in reducing losses and increasing environmental sustainability.