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Supplementations of poultry by‐product meal and selenium yeast increase fish meal replacement by soybean meal in golden pompano ( Trachinotus ovatus ) diet
Author(s) -
Wang Yan,
Ma Xu Z,
Wang Fei,
Wu Yu B,
Qin Jian G,
Li Peng
Publication year - 2017
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.13028
Subject(s) - fish meal , biology , soybean meal , feed conversion ratio , meal , food science , zoology , yeast , selenium , fish <actinopterygii> , fishery , body weight , biochemistry , ecology , chemistry , raw material , organic chemistry , endocrinology
The effects of poultry by‐product meal ( PBM ) and selenium yeast (Se‐yeast) supplementations on fish meal replacement by soybean meal ( SBM ) in the diet of golden pompano ( Trachinotus ovatus ) were examined. In trial I, a 2 × 3 layout including two PBM levels (100 and 170 g kg −1 ) and three levels of fish meal replacement (0, 40 or 60%) was used. At 100 g kg −1 PBM , fish fed the basal diet exhibited the highest weight gain ( WG ) and nitrogen retention efficiency ( NRE ) and the lowest feed conversion ratio ( FCR ). At 170 g kg −1 PBM , no significant differences were found in WG and NRE between fish fed the basal diet and diet with 40% of fish meal replaced by SBM . In trial II , the basal diet containing 170 g kg −1 PBM (trial I) served as a reference. A 2 × 2 layout included two levels of fish meal replacement (40 or 60%) and two levels of Se‐yeast addition (0 and 1 g kg −1 ). No significant differences were found in WG , feed intake, FCR and NRE between fish fed the reference diet and diet with 40 or 60% fish meal replacement plus 1 g kg −1 Se‐yeast addition. This study indicates that supplementations of PBM and Se‐yeast can enhance the level of fish meal replacement by SBM in golden pompano diet. Dietary fish meal level can be reduced to 140 g kg −1 by optimizing inclusion of SBM , PBM and Se‐yeast.