Effect of dietary DP/DE ratio on apparent digestibility, growth and nitrogen and phosphorus retention in rainbow trout, Oncorhynchus mykiss (Walbaum)

acuicultura alimentation des poissons aquaculture diet dieta digestibilidad digestibility digestible energy energia energie energy energy value feed conversion efficiency feed intake fish feeding fishes fosforo gain de poids ganancia de peso liveweight gain nitrogen metabolism nitrogen retention oncorhynchus mykiss peces phosphore phosphorus poisson (animal) prise alimentaire (animaux) protein metabolism proteine proteins rainbow trout weight gain