Open AccessEvaluation of fermented soybean meal in the practical diets for juvenile C hinese sucker, M yxocyprinus asiaticus
Author(s) -
Yuan Y.C.,
Lin Y.C.,
Yang H.J.,
GONG Y.,
Gong S.Y.,
Yu D.H.
Publication year - 2013
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/j.1365-2095.2012.00939.x
Subject(s) - biology , fish meal , soybean meal , dry matter , feed conversion ratio , zoology , meal , protein efficiency ratio , juvenile , weight gain , food science , fish <actinopterygii> , body weight , fishery , ecology , raw material , endocrinology
The study was designed to investigate the influence of fermented soybean meal ( FSBM ) on the growth and feed utilization of juvenile C hinese sucker, M yxocyprinus asiaticus . Seven isonitrogenous and isolipidic diets were formulated with 0%, 15%, 25%, 35%, 45%, 55% or 65% replacement of fish meal with FSBM on a protein basis. Each diet was fed to three replicate groups of fish with an initial weight 4.59 ± 0.2 g for 8 weeks. Weight gain ( WG ) and specific growth rate ( SGR ) was significantly lower when FSBM inclusion was 391 g kg −1 or greater, replacing more than 45% fish meal protein. A significant negative relationship was observed between growth response and the level of fish meal protein replacement with FSBM . Methionine and L ysine content decreased as FSBM inclusion levels increased, consequently compromising growth performance. Feed intake ( FI ) were unaffected by dietary FSBM levels. The feed conversion ratio ( FCR ) of fish fed D ‐0, D ‐15, D ‐25 and D ‐35 diets was significantly lower than those fed other diets. The protein efficiency ratio ( PER ) was highest at the lowest FSBM inclusion level. Experimental diets D ‐0, D ‐15, D ‐25 and D ‐35 had apparent dry matter digestibility ranging from 71.2% to 72.6% and apparent protein digestibility ( ADP s) from 89.1% to 90.1%, while the diets with higher FSBM inclusion ( D ‐45 to D ‐65) had a significantly lower apparent dry matter digestibility range (69.7–70.3%) and ADP s range (88.5–88.9%). It is concluded that FSBM is an acceptable alternative plant protein source that can replace up to 35% of fish meal protein in diets without significant adverse effects on growth, survival, FCR , PER and body composition.