Nutrition of Salmonoid Fishes: Arginine and Histidine Requirements of Chinook and Coho Salmon

Abstract

Growth studies were conducted with Chinook (Oncorhynchus tshawytscha) and coho (O. kisutch) salmon fingerlings to determine the minimal requirements for arginine and histidine. A 40% protein diet containing an essential amino acid pattern similar to that found in whole egg protein was used as the experimental diet. The coho salmon required about 2.3% arginine and 0.7% histidine. The Chinook salmon required 2.4% arginine in the diet and the histidine requirement was placed at about 0.7% of the ration.