Using of poultry by-product and hatchery -by product as partial replacement for fish meal in nile tilapia (oreochromis niloticus)‎ diets

Abstract EN

This study was designed to determine the effect of replaced fish diet protein at levels 0, 25% and 50% by using non-conventional protein sources (poultry by-product and hatchery by-product meals) in fish treatments.

In feeding trail a total number of 1200 Nile tilapia fish (30g body weight), randomly distributed in four groups per treatment, were fed diets at 3% of total biomass of body weight (4 times) 6 day per week.

The diets contained 30% Crude Protein (CP) and gross energy 4300 kcal / kg.

The feeding trails were extended for 140 days.

The results indicated that using 50% of poultry by-products waste to replace fish meal protein in the experiment had the best values obtained for body weight gain, feed conversion ratio, utilization of nutrients.

The lowest cost of one kg body weight of fish was also obtained.