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Nutrition of Salmonoid Fishes

IV. An Amino Acid Test Diet for Chinook Salmon¹

U. S. Fish and Wildlife Service, Salmon Nutrition Laboratory, Cook, Washington

An amino acid test diet was formulated which would maintain chinook salmon fingerlings for at least a 14-week growing period under the experimental conditions used.

The amino acid mixture comprising the nitrogen source consisted of crystalline L-amino acids bound together with the other diet components by carboxymethylcellulose.

An amino acid mixture approximating the content of amino acids in yolk-sac fry and fingerling salmon protein failed to yield acceptable growth when compared with the above amino acid mixture or the control diet.

The use of an amino acid test diet for salmon in which the experimenter has control over each amino acid in the protein component, should simplify the determinations of the qualitative and quantitative amino acid requirements of chinook salmon.

Manuscript received 5 January 1957.