Open AccessApparent digestibility coefficients of processed agro‐food by‐products in European seabass ( Dicentrarchus labrax ) juveniles
Author(s) -
Campos I.,
Matos E.,
Aragão C.,
Pintado M.,
Valente L.M.P.
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.12665
Subject(s) - dicentrarchus , biology , fishery , microbiology and biotechnology , food science , zoology , fish <actinopterygii>
Apparent digestibility coefficients ( ADC s) of processed agro‐food by‐products were assessed in European seabass ( Dicentrarchus labrax ). Each experimental diet was obtained by replacing 300 g/kg of a commercial‐based diet used as reference ( REF ) with a test ingredient: wheat germ ( GERM ), okara meal ( OKA ), poultry by‐product meal ( POULT ), steam hydrolysed (Fe HY ) and enzyme‐treated feather meal (Fe ENZ ), beta‐lactoglobulin (β‐Lg) and peptide fractions >3,000 Da obtained from brewer's yeast (YeastP) and fish by‐products (FishP). Dry matter ADC was highest in β‐Lg (95%) and lowest in OKA (40%). Protein ADC s were high in β‐Lg, FishP, GERM and POULT (>93%); intermediate in Fe HY and Fe ENZ (85%–88%); and moderate in OKA and YeastP (70%–78%). The essential amino acids' ADC mean was above 91% in POULT , β‐Lg, GERM and FishP, 84%–89% in Fe HY and Fe ENZ and 73%–76% in YeastP and OKA . Energy ADC was highest in POULT and β‐Lg (89%–95%) and lowest in YeastP and OKA (61%–64%). Lipid ADC was highest for POULT and GERM (100%). Phosphorus ADC was lowest in GERM (19%) and highest in β‐Lg (88%). Fe HY , Fe ENZ , POULT , GERM , FishP and β‐Lg are highlighted as protein sources for European seabass.