Evaluation of some unconventional plant proteins in diets for Red Tilapia (Oreochromis spp)‎ fingerlings

الملخص EN

The potential of canola meal and atriplex leaves meal in formulated diets for red tilapia (Oreochromis spp) was evaluated.

Seven diets (30 %±.016 crude protein), 4640 kcal GE/kg were formulated.

Fish meal protein was substituted at the rate of 10, 20 and 30% with canola meal protein or atriplex leaves.

A diet containing no plant sources served as the control.

A diet containing 10 % canola meal had significantly (p ≤ 0.05) better weight gain and conversion values.

All fish fed diets supplemented with 20 and 30 % canola meal 10 , 20 and 30 % atriplex demonstrated reduced growth and feed utilization efficiency (p≥ 0.05 ).

Except fish diet 10 % canola, the growth rate and other nutritional parameter decreased with increasing inclusion levels of the two plant protein sources.

Fish group fed diets control, 10% and 20% canola and 10 % atriplex had a highest survival rate having their values 100% respectively.

All water parameters tested were within permissible levels for Tilapia maximum growth so the use of canola meal up to 10 % and up to 20 % of atriplex is recommended, without adverse effect