February 15-18, 2009 Washington State Convention Center Seattle ...

EFFECT OF TOTAL REPLACEMENT OF FISHMEAL WITH FERMENTED SOYBEAN AND
SQUID BY-PRODUCT BLEND IN PRACTICAL DIETS FOR CLIMBING PERCH Anabas
testudineus
Md. Abdul Kader*, Mahbuba Bulbul, Md. Sakhawat Hossain, Mohammad Mosarof Hossain, Gias Uddin Ahmed,
Md. Arshad Hossain, Saichiro Yokoyama, Manabu Ishikawa and Shunsuke Koshio
Laboratory of Aquatic Animal Nutrition
Faculty of Fisheries, Kagoshima University
Shimoarta 4-50-20
Kagoshima 890 0056, Japan
abdulkader_fc@yahoo.com
The continuous increasing demand for fishmeal (FM) in different agro-industrial sectors, environmental fluctuations and decreasing
wild stock of FM produced fish, made FM as limited and expansive resources which ultimately limit its further use in
aquaculture. In Bangladesh, now-a-days, quality fish meal is not available mainly because of high price which is beyond the
marginal fish farmer. Therefore, cost-effective, nutritionally balanced, environmentally sound and available alternative protein
feedstuff is necessary for sustainable aquaculture. A blend of animal and plant proteins might be a good approach for this purpose.
Due to the outbreaks of different diseases related to proteins from animal by-products, most of the animal proteins are no
longer available for use as animal feed. Sea food processing by-products still have importance to compensate this deficiency.
Among plant proteins, soybean meal is the most important for comparatively balanced nutritional composition, world wide
availability and low cost. Since efficient utilization of the alternative protein is necessary, fermentation process will be an interesting
approach to improve the quality of products.
The effects of total replacement of dietary FM with fermented soybean meal and squid by-product blend (7:3) (FSSq) on the
growth performances, feed utilization and profit indices of climbing perch (Anabas testudineus, Bloch, 1972) were investigated.
Five isonitrogenous and isolipidic diets were prepared by replacing 0, 25, 50, 75 and 100 % brown fishmeal protein with
FSSq. A commercial diet was also used as reference diet. The diets were tested using juvenile fish of 1.00 g initial weight, held
in triplicate groups (stocking density 40000 ha -1 ) of 30 m 2 earthen pond for 10 weeks. The test diets were hand delivered twice
a day at the rate of 10% of their body weight per day in the beginning and gradually decreased to 5% till end. At the end of
the feeding trial, growth performances, feed utilizations, whole body composition and economic benefits were analyzed. The
results of this research and impacts of the findings will be discussed.
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