Ogello , E. O. and Wullur, Stenly and Hagiwara, A.
(2017)
BLENDING FISHWASTES AND CHICKEN MANURE EXTRACT AS A
LOW-COST AND STABLE DIET FOR PLANKTONIC LIVE FOOD
PRODUCTION.
In: FISH & SHELLFISH LARVICULTURE SYMPOSIUM, September, 4-7 2017, Ghent University, Belgium.
Abstract
The global increase of aquaculture has expanded the demand for the zooplankton
as live foods for larviculture. Although freshly cultured microalgae is the common
diet for zooplankton, microalgal culture protocols are laborious and costly,
thus limiting continuous production of sufficient zooplankton and sometimes
disrupts larval fish production in the microalgae-based hatcheries (Lubzens et
al., 1995). Alternatively, cheaper diet (e.g. baker’s yeast) has been used as live
food diet but culture instabilities due to bacterial flora imbalance are common.
Other products (e.g. condensed microalgae and artificial diets such as Selco (Inve-
Co. Ltd) are also commercially available but costly for most fish farmers,
especially in developing countries and some parts of Asia, which are potential
future leaders in marine larviculture production. Therefore, research studies are
needed to develop cheap and stable microalgal replacement diets for profitable
aquaculture. This study investigated the feasibility of a fishwaste diet (FWD)
made of fishwastes (heads) and chicken manure extract (CME) at optimum carbon/
nitrogen ratio as a cost-effective and stable diet for planktonic live food
production.
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