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The requirement and toxicity of selenium in rainbow trout (Salmo gairdneri).
The selenium uptake and accumulation in tissues of trout reared on diets containing in excess of 3 microgram/g dry feed may ultimately be toxic to trout if maintained over long periods of time. Expand
Evaluation of Acid-Insoluble Ash as an Indicator of Feed Digestibility in Rainbow Trout (Salmo gairdneri)
When the acid-insoluble ash content of a diet is low, the addition of celite can improve the precision of the analysis without affecting absolute values of digestibility coefficients. Expand
Maximum tolerable and toxicity levels of dietary copper in rainbow trout (Salmo gairdneri Richardson)
Both copper and iron levels in the liver increased in relation to increased levels of dietary copper, which may indicate an interaction between copper andIron metabolism in the trout. Expand
Effect of extrusion processing and steam pelleting diets on pellet durability, pellet water absorption, and the physiological response of rainbow trout (Salmo gairdneri R.)
Investigating the effect of extrusion processing and steam pelleting on pellet durability, pellet water absorption and the physiological response of rainbow trout reared upon these diets found extruded pellets to be more durable, had superior water stability and absorbed more water than steam pellets. Expand
Digestibility and Utilization of Canola Meal in Practical-Type Diets for Rainbow Trout (Salmo gairdneri)
Canola meal supplementation to the trout diet affected the thyroid gland of the fish, producing a diffuse, microfollicular hyperplasia that increased in severity with increasing CM supplementation. Expand
Absorption, distribution, half-life and possible routes of elimination of dietary selenium in juvenile rainbow trout (Salmo gairdneri).
The biological half-life of selenium in the tissues decreased with increased seenium loading except in the liver, which at toxic dietary selenum concentrations became longer, suggesting a rate-limiting metabolic transformation of se lenium for excretion in this organ. Expand
Relative biopotency of dietary ergocalciferol and cholecalciferol and the role of and requirement for vitamin D in rainbow trout (Salmo gairdneri).
Evidence is provided that vitamin D is required for the normal functioning of white muscle without altering the calcium content of the plasma or epaxial musculature. Expand
Partial Replacement of Herring Meal with Soybean Meal and Other Changes in a Diet for Rainbow Trout (Salmo gairdneri)
Growth rate, feed efficiency, and mortality were not adversely affected by reducing the level of herring meal in an open formula dry-pellet diet fed to rainbow trout (Salmo gairdneri) in aquariaExpand
The essentiality of cholecalciferol in the diets of rainbow trout (Salmo gairdneri)
Vitamin D3 deficiency in rainbow trout was characterized by a marked decrease in weight gain and feed efficiency, lethargy and anorexia, the clinical manifestations of tetany without hypocalcaemia, and an increase in the lipid content of carcass, white muscle and liver, and increased carcass dry matter. Expand