Program and Abstracts(PDF)

Poster presentation 16
EFFECT OF COMPLETE REPLACEMENT OF FISHMEAL WITH MIXTURES OF
SOYBEAN MEAL AND SEA FOOD PROCESSING BY-PRODUCTS ON THE
PERFORMANCES OF RED SEA BREAM, PAGRUS MAJOR
Md. Abdul Kader 1* , Mahbuba Bulbul 1 , Mizuta Takahiro 2 , Saichiro Yokoyama 1,2 , Manabu
Ishikawa 1,2 , and Shunsuke Koshio 1,2
1
The United Graduate School of Agricultural Science, Kagoshima University, 1-21-24, Korimoto,
Kagoshima 890-0065, Japan
2
Faculty of Fisheries, Kagoshima University, 4-50-20 Shimoarata, Kagoshima 890-0056, Japan
* Email: abdulkader_fc at yahoo.com
An eight week feeding trial was conducted to evaluate the effect of animal and plant protein ratio
for the development of non fishmeal (FM) practical diet of red sea bream, Pagrus major. Four
diets were formulated to be isonitrogenous (50% crude protein), isolipidic (15% total lipid) and
isocaloric (20 KJ g -1 ). The control diet was the FM based diet (FM100). The remaining three
diets were prepared by replacing 60 (FM40), 80 (FM20) and 100% (FM0) FM protein with
different proportions of sea food processing by-products and plant proteins. A commercial diet
(19.3 KJ g -1 gross energy) was used as the reference diet (COM). Fifteen fish with a mean initial
weight of approximately 1.35g per fish were stocked in triplicate in each of 15 100-l
polycarbonate circular tanks. The fish were fed to satiation by hand twice daily.
Results of the study indicated that weight gain (%) and specific growth rate (% day) of fish did
not differ significantly (P>0.05) with up to 80% FM protein replacement. In this level, growth
was also comparable (P>0.05) with the commercial diet (COM). Feed intake and utilization were
significantly (P