Open AccessMineral digestibility of different animal sources for the silver catfish Rhamdia voulezi
Author(s) -
Guilherme Rodrigo Frei,
Jhonis Ernzen Pessini,
Nathieli Cozer,
Aldi Feiden,
Fábio Bittencourt,
W. R. Boscolo,
Arcângelo Augusto Signor
Publication year - 2021
Publication title -
latin american journal of aquatic research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.357
H-Index - 28
ISSN - 0718-560X
DOI - 10.3856/vol49-issue3-fulltext-2656
Subject(s) - dry matter , catfish , meat and bone meal , meal , phosphorus , chemistry , fish meal , food science , zoology , bone meal , feather meal , biology , fish <actinopterygii> , fishery , raw material , organic chemistry , bran
This study aimed to evaluate the apparent digestibility coefficients (ADCs) of dry matter, crude protein, gross energy, and minerals of marine fish meal (MFM), salmon meal (SM), tilapia by-product meal (TBM), meat and bone meal (MBM), poultry by-product meal (PBM), blood meal (BM), and feather meal (FM) by silver catfish Rhamdia voulezi. Groups of 12 fish were fed the experimental diet three times a day until apparent satiation, and the fecal samples were collected from an accumulation device. SM and PBM exhibited the highest digestibility values for dry matter, crude protein, and gross energy, while MBM and FM presented significantly lower ADCs for dry matter. BM and FM exhibited higher ADCs for phosphorus, 65.05 and 63.87%, respectively. The ADCs for calcium were 58.8% for MFM, 56.69% for TBM, and 60.08% for PBM. PBM and FM had the highest iron ADCs, 44.01 and 46.29%, respectively. Magnesium ADCs ranged from 44.87% for MBM to 75.50% for TBM. BM had the highest digestibility for zinc (62.77%), whereas MBM (36.68%) and FM (39.39%) had the lowest. In general, SM and PBM showed higher values as feedstuffs for silver catfish feeds. At the same time, the digestibility was lower for TBM and MBM for macronutrients and minerals such as phosphorus, iron, and zinc.