Riboflavin requirement of channel catfish fingerlings.
Channel catfish fingerlings were fed purified diets containing five levels (0, 20, 40, 80, and 120 mg/kg) and six levels (0, 3, 8, 20, 40, and 80 mg/kg) of riboflavin in separate 20 and 12 week feeding studies. The dietary riboflavin level required to provide maximal growth in channel catfish fingerlings was found to be approximately 9 mg/kg of diet. All fish fed unsupplemented diets (riboflavin content less than 0.1 mg/kg diet) demonstrated a short body dwarfism which was the result of arrested longitudinal growth of the vertebrae. This abnormality did not occur in groups fed 3 mg/kg or higher levels of riboflavin. No histological abnormalities were recognized in the liver, kidney, lateral muscle, gastrointestinal tract, gills, or bones of deficient fish.
D000818:Animals; D004032:Diet; D005399:Fishes / Q000254:growth & development*; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements; D012256:Riboflavin / Q000502:physiology*; D012257:Riboflavin Deficiency / Q000473:pathology / Q000662:veterinary
D012256:Riboflavin