Effects of feeding Atlantic salmon (Salmo salar L.) imbalanced levels of lysine and arginine, Experimental broodstock diets as partial fresh food substitutes in white shrimp Litopenaeus vannamei B., Utilization of torula yeast (Candida utilis) as a protein source in diets for tilapia (Oreochromis mossambicus Peters) fry, Full‐fat soybean meal in diets for Atlantic halibut: growth, metabolism and intestinal histology, Effect of microbial phytase on apparent nutrient digestibility of barley, canola meal, wheat and wheat middlings, measured in vivo using rainbow trout (Oncorhynchus mykiss), Effects of dietary phosphorus and lipid levels on utilization and excretion of phosphorus and nitrogen by rainbow trout (Oncorhynchus mykiss). 1. Laboratory‐scale study, Effects of dietary phosphorus and lipid levels on utilization and excretion of phosphorus and nitrogen by rainbow trout (Oncorhynchus mykiss). 2. Production‐scale study, Bioactive roles of carotenoids and retinoids in crustaceans.