Open AccessTHE EFFECTS OF SUPPLEMENTING PURIFIED PROTEINS WITH LIMITING ESSENTIAL AMINO ACIDS ON GROWTH AND SURVIVAL OF JUVENILE LOBSTERS ( Homarus americanus ) 1
Author(s) -
Mason E. G.,
Castell J. D.
Publication year - 1980
Publication title -
proceedings of the world mariculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0748-3260
DOI - 10.1111/j.1749-7345.1980.tb00129.x
Subject(s) - casein , homarus , amino acid , tryptophan , limiting , glycine , lysine , threonine , histidine , arginine , essential amino acid , biochemistry , glutamine , food science , biology , chemistry , fishery , enzyme , serine , crustacean , mechanical engineering , engineering
Twelve and 16 week feeding studies were conducted to determine the effects of supplementing casein, and cod fish protein concentrate (FPC) based diets respectively with various pure amino acids. The amino acids added were considered to be potentially limiting when comparing casein or FPC relative to the amino acid composition of juvenile lobster protein. Casein was supplemented with combinations of arginine, glycine, lysine, threonine and tryptophan and FPC with histidine, lysine, and tryptophan. Glutamine was used to adjust the nitrogen levels in the diets. Results indicated that supplementation with glycine, a non‐essential as determined in tracer studies, is not beneficial in casein based diets. Threonine is the limiting amino acid in casein, while histidine and/or tryptophan appear to be limiting in FPC.