Nutritional studies on brewer dried grains as an alternative protein source for Nile tilapia (Oreochromis niloticus) diets

Hessein, Mohssen; Al-Azab, Al-Desok; El-Warith, Abd El-Wahab; Bolbol, Mohammed; Seden, Medhat

doi:10.21608/ejabf.2013.2185

Nutritional studies on brewer dried grains as an alternative protein source for Nile tilapia (Oreochromis niloticus) diets

Document Type : Original Article

Authors

¹ Department of Animal Production, Faculty of Agriculture, El-Azhar University

² Department of Animal Production, Faculty of Agriculture, El-Azhar University.

³ Central Laboratory for Aquaculture Research, Abbassa, Sharkia, Egypt

10.21608/ejabf.2013.2185

Abstract

Brewer dried grain (BDG) was tested to replace soybean meal in diets of mono
sex Nile tilapia (Oreochromis niloticus). Five isonitrogenous (30%), isocaloric (442
kcal/100g) diets were formulated to contain BDG as an alternative protein source
instead of soybean meal at different levels (0, 25, 50, 75 and 100%). A total number
of 225 of Nile tilapia (0.45g)were randomly distributed into five experimental groups,
each in trireplecates, and were fed daily at a rate of 15% decreased gradually to be 4%
of fish live weight through 14weeks experimental period.Data collected were on
growth performance, feed utilization and body composition in addition to economic
evaluation. Results of growth performance did not show any adverse effects related to
the incorporation of BDG up to 75%. FI shows the exact similar trend of growth
performance. The incorporation of BDG in the diets improved slightly FCR, FER and
PPV. Fish whole body composition of treatments groups which showed higher DM,
EE, energy and somewhat protein contents and lower moisture and ash than that
recorded at the start of the experiment.

Keywords