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Effect of dietary carbohydrate sources on the growth performance, feed utilization, muscle composition, postprandial glycemic and glycogen response of Amur sturgeon, A cipenser schrenckii Brandt, 1869
Author(s) -
Jiang M.,
Liu W.,
Wen H.,
Huang F.,
Wu F.,
Tian J.,
Yang C. G.,
Wang W. M.,
Wei Q. W.
Publication year - 2014
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.12600
Subject(s) - dextrin , biology , maltose , glycogen , carbohydrate , starch , sturgeon , fructose , postprandial , amylase , feed conversion ratio , food science , protein efficiency ratio , glycemic , zoology , biochemistry , endocrinology , insulin , sucrose , fish <actinopterygii> , fishery , body weight , enzyme
Summary The present study was conducted to compare growth performance, feed utilization, muscle composition, and postprandial glycemic and glycogen responses of juvenile Amur sturgeon, A cipenser schrenckii , fed different carbohydrate diets in order to select the most appropriate carbohydrate sources for this species. Six experimental diets were formulated containing 22% glucose, fructose, maltose, dextrin, α ‐starch or cornstarch, respectively. Triplicate groups of 20 fish (average weight: (4.7 ± 0.1) g, means ± SD ) were randomly fed one of the six diets for eight weeks. Results showed that the weight gain rate was highest in fish fed the dextrin (716.0%) or α ‐starch diet (782.9%), and lowest in fish fed the fructose diet (333.2%). Specific growth rate and feed efficiency showed a similar weight gain rate pattern. Apparent digestibility of dietary carbohydrate for Amur sturgeon was the fructose, glucose> maltose> dextrin> α ‐starch > cornstarch diet; apparent digestibility of dietary protein was the fructose> glucose, maltose, dextrin> cornstarch> α ‐starch diet. Contents of muscle moisture, ash and crude lipid were significantly affected by the difference in dietary carbohydrate sources (P < 0.05), but no significant difference was observed in crude protein content (P > 0.05). Dietary carbohydrate sources significantly affected plasma glucose and liver glycogen concentrations in sturgeon in different periods after feeding (P < 0.05). According to the weight gain rate, dextrin and α ‐starch were the most appropriate carbohydrate sources for juvenile Amur sturgeon, whereas fructose was deemed to be an inadequate carbohydrate source.