Open AccessEffects of different arginine/lysine level on growth performance, body composition and digestive enzyme activity of Macrobrachium rosenbergii
Author(s) -
Dong X. J.,
Wu J.,
Shen Y.,
Chen J. Y.,
Miao S. Y.,
Zhang X. J.,
Sun L. S.
Publication year - 2018
Publication title -
aquaculture nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 79
eISSN - 1365-2095
pISSN - 1353-5773
DOI - 10.1111/anu.12649
Subject(s) - lysine , arginine , biology , macrobrachium rosenbergii , feed conversion ratio , biochemistry , composition (language) , weight gain , food science , enzyme , antagonism , zoology , body weight , endocrinology , amino acid , ecology , prawn , linguistics , philosophy , receptor
Given the universal presence of antagonism between arginine and lysine, determining the optimal dietary arginine/lysine level is of great importance. In this study, eight diets were formulated to contain different arginine/lysine level, followed by a 9‐week feeding trial with shrimps of 2.10 ± 0.01 cm in length and 0.38 ± 0.02 g in weight to determine the effect of dietary arginine/lysine level on growth performance, body composition and enzyme activity. The results showed that the Diet 6 (arginine/lysine level of 29.4/21.0 g/kg) group had significantly higher weight gain rate, and specific growth rate than the control group and most of the other groups ( p < .05) did. Similarly, the retention efficiency of arginine and lysine in the Diet 6 group was significantly higher than the control group and most of the other groups ( p < .05). Moreover, most digestive enzymes had higher activity levels in the Diet 6 group, and evident antagonism between dietary arginine and lysine was detected. In summary, dietary arginine/lysine level of 29.4/21.0 g/kg produced the best growth performance, suggesting that a better growth performance in Macrobrachium rosenbergii culture can be obtained by adjusting the dietary arginine/lysine level.