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Evaluation of pea protein concentrate as partial replacement of fish meal in practical diets for juvenile tench ( T inca tinca L .)
Author(s) -
GonzálezRodríguez Álvaro,
Celada Jesús D,
Carral José M,
SáezRoyuela María,
Fuertes Juan B
Publication year - 2016
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/are.12732
Subject(s) - biology , juvenile , fish meal , zoology , meal , fish <actinopterygii> , composition (language) , protein requirement , dietary protein , body weight , fishery , food science , ecology , endocrinology , linguistics , philosophy
With the aim to evaluate different replacement levels of fish meal ( FM ) by pea protein concentrate ( PPC ) on survival, growth performance and body composition of juvenile tench ( T inca tinca ), a 90‐day experiment was conducted with 6‐month‐old juveniles. Four practical diets (50% crude protein) differing in the level of replacement of FM protein by PPC protein were tested: 0% (control), 25%, 35% or 45%, corresponding to 0, 207.5, 290.4 or 373.3 g PPC kg −1 diet respectively. Survival rates ranged from 96.4% to 98.5%. The 25% and 35% replacement diets resulted in similar growth values ( P > 0.05) to those obtained with the control diet (average of the three feeding treatments: 57.57 mm total length, 2.48 g weight and 1.87% day −1 specific growth rate). The 45% replacement diet had the lowest growth ( P < 0.05). Fish with externally visible deformities ranged from 0% to 1.5%. The relation among amino acid profiles of the diets, body composition, growth performance of juveniles and amino acid requirements of other fish species is discussed. An amount of 290.4 g PPC kg −1 diet (35% replacement of FM protein) can be included in juvenile tench diets without impairing growth performance.