USE OF SOME CORN PROCESSING BY-PRODUCTS IN FISH DIETS

Abstract

This study was carried out at a commercial fish farm located in Kafr El-Shiekh Governorate, Egypt, where started at the second week of May 2015 and terminated at the third week of September (135 days period). Yellow corn and soybean meal as main sources for energy and plant protein, respectively, were replaced by either DDGS or Foots. Two feeding experiments were carried out to investigate the effects of partially replacing of yellow corn and soybean meal with the tested materials on growth performance, body composition and nutrients digestibility of monosix Nile tilapia (Oeochromis niloticus) fingerlings. Two feeding experiments were carried out, the first experimental diets, were conducted to replace the yellow corn as a main source of energy in the control diet by DDGS or Foots, and were formulated almost isonitrogenous (25 to 25.84% crude protein) and isoenergetic (4442.34 to 4748.65 Kcal GE/ kg). The second experimental diets, were formulated to replace soybean meal as a main source of plant protein in the control diet by DDGS or Foots and were almost isonitrogenous (24.93 to 25.09 % crude protein) and isoenergetic (4437.11 to 4602.32 Kcal GE/kg). At the first experiment, yellow corn was replaced by 0, 20 and 40% of DDGS or Foots (TC1, TC2 TC3 TC4 and TC5, respectively). While, at the second