We studied the effect of changes in dietary methionine (Met) supply in broodstock and first-feeding rainbow trout fry (offspring). Three plant-based diets differing in Met level (deficient, adequate or in excess of the established requirement) were fed to the broodstock (male and female) for 6 months prior to spawning (diets BD, BA and BE, respectively). The offspring from the parental Met-groups was then chall...
The effects of dietary levels of phosphorus (P) and calcium(Ca) on skeletal development and mineral deposition in rainbow trout(Oncorhynchus mykiss) fry were studied. Six semi-purified diets were formulated with graded levels of P and Ca. The basal diet A contained only P supplied by casein at 0.5% of drymatter. Other diets B, C,D and Ewere supplementedwith 0.4, 0.8, 1.2 and 1.6% P supplied as a 1:1 mixture of ...