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Supplementation effect(s) of organic acids and/or lipid to plant protein‐based diets on juvenile yellowtail, Seriola quinqueradiata Temminck et Schlegel 1845, growth and, nitrogen and phosphorus excretion
Author(s) -
Sarker Md. Shah Alam,
Satoh Shuichi,
Kamata Keisuke,
Haga Yutaka,
Yamamoto Yoshihiro
Publication year - 2012
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/j.1365-2109.2011.02859.x
Subject(s) - biology , citric acid , excretion , fish meal , phosphorus , zoology , meal , seriola quinqueradiata , nutrient , juvenile , fatty acid , formic acid , feed conversion ratio , food science , biochemistry , fish <actinopterygii> , chemistry , fishery , endocrinology , ecology , organic chemistry , body weight
A feeding experiment was conducted to investigate the effect of organic acids and/or lipid supplementation on growth, utilization and environmental loading of nitrogen (N) and phosphorus (P) in juvenile yellowtail fed fishmeal (FM) and plant protein (PP) diets. Six diets as FM (FM‐based), FM+P (FM with inorganic P), FM+L (FM with lipid), PP+CA (PP with citric acid), PP+L+CA (PP with lipid and citric acid) and PP+L+FA (PP with formic acid) were formulated. Yellowtails were fed each of the diets in duplicate groups; once a day, 6 days a week to near satiation at water temperature 19.0–25.0 °C for 16 weeks. Fishmeal with inorganic P gave the best growth while PP+L+FA the lowest. However, growth increased in PP+CA and PP+L+CA. Addition of lipid significantly increased N and P retention resulting in significant reduction in N and P excretion. Citric acid and FA supplementation to PP diets also increased retention of P; hence, its excretion was lowered. Thus, CA, FA and lipid in juvenile yellowtail diets can help to partially replace FM with PP sources and reduce inorganic P use to minimize environmental loading from aquafeeds.