1. Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, Aas, Norway
2. Raveien 339, Borre, Norway
3. Felleskjøpet Fôrutvikling, Trondheim, Norway
4. Poznań University of Life Sciences, Department of Animal Nutrition and Feed Management, Poznań, Poland
5. Division of Inland Fisheries and Aquaculture, Institute of Zoology, Poznań University of Life Sciences, Poznań, Poland