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Effect of dietary protein, lipid and carbohydrate content on the growth, feed efficiency and carcass composition of striped bass, Morone saxatilis (Walbaum), fingerlings
Author(s) -
BERGER A.,
HALVER J. E.
Publication year - 1987
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.1365-2109.1987.tb00323.x
Subject(s) - biology , bass (fish) , dextrin , feed conversion ratio , carbohydrate , composition (language) , protein efficiency ratio , morone , morone saxatilis , zoology , dietary protein , food science , fishery , biochemistry , body weight , starch , endocrinology , linguistics , philosophy
. Two 6‐week experiments were conducted with age‐0 striped bass, Morone saxatilis (Walbaum). In the first experiment, fish were fed isocaloric diets that contained 20–65% protein. In the second experiment, fish were fed isonitrogenous diets (42–46% protein) that contained 6–29% dextrin or 8–25% cod liver oil. Maximum weight gain, feed efficiency and protein efficiency ratio were achieved with a 52% protein diet. Net protein utilization was inversely related to dietary protein concentration. In the second experiment, maximum growth was achieved with a 33% carbohydrate diet (based on nitrogen free extract); and with a 17% lipid diet (based on ether extract). Increasing dietary lipid beyond 17% resulted in growth depression. No negative impacts on carcass composition as a result of increasing dietary dextrin or lipid were judged to have occurred.