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Responses of fingerling carp, Cyprinus carpio L., to dietary lysine
Author(s) -
D'MELLO J. P. F.,
ALSALMAN M. H.,
MILLS D. H.
Publication year - 1989
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1989.tb00369.x
Subject(s) - lysine , cyprinus , biology , carp , common carp , zoology , food science , amino acid , biochemistry , fishery , fish <actinopterygii>
. The lysine requirements of fingerling carp, Cyprinus carpio L., for optimum growth and efficiency of food utilization were determined in two experiments by the addition of graded supplements of lysine to a basal diet deficient in this amino acid. The lysine requirement was estimated to be around 14.5 g/kg dry matter at an ambient temperature of 20°C. At 25°C continuing growth responses occurred up to a dietary lysine concentration of 22.4 g/kg DM. However, when these responses are considered in relation to daily lysine intake, the gross efficiency of utilization of dietary lysine for growth appeared to be unaffected by environmental temperature. Dietary lysine concentrations exerted no consistent effect upon carcass composition of carp. However, fat deposition tended to increase as food intakes increased in response to lysine additions or to elevated ambient temperature.