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Comparative Assessment of Different Types of Live Food on Growth Performance and
Survival of Giant gourami (Osphronemus goramy) Fry
Research proposal presented by:
Andie John D. Tadeo
MS Aquaculture
College of Fisheries
Central Luzon State University
Science City of Munoz, Nueva Ecija
2014

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Introduction
In aquaculture, production of fish to market size within a short period is of highest
importance. But, the success in the hatchery production of fish fingerlings for stocking in the grow-
out production system is largely dependent mainly on the availability of suitable live food
organisms for feeding fish larvae, fry and fingerlings to support good growth and health (Giri, et
al., 2002). Live feeds also help restore the water quality of the culture system and are more easily
accepted by cultured organisms. While live food is difficult to sustain and requires considerable
space and expense, micro diets are easier to maintain and usually have lower production costs
(Jones et al., 1993, Person-Le Ruyet et al., 1993). The development of formulated diets allows for
production of valuable fish larvae without using live prey. The possibility of replacing live feed
with manufactured diets from the onset of exogenous feeding has been investigated in several
studies (Jones et al., 1993, Person-Le Ruyet et al., 1993). Limited success has been achieved in
first-feeding larvae with the complete replacement of live feeds. In freshwater zooplankton,
cyclopoid copepods are important because many of them are voracious predators, feeding on algae,
ciliates, rotifers, larval insects, and small cladocerans (Monakov 2003), thereby structuring
plankton communities. Phytoplankton genera such as Pediastrum, Eudorina and Ceratium are
difficult for zooplankton to digest compared with Chlorella, Scenedesmus and Chlamydomonas
(Downing and Rigler 1984). Several copepods, particularly cyclopoids, are facultative predators
and grow better on animal diets (Williamson and Reid 2001).
Wang et al. 2005 found that the survival will be significantly higher in larvae fed with live
food than in larvae fed the three formulated diets. Introduction of live zooplankton is therefore
being investigated as an alternate to pond fertilization for increasing fish yields while avoiding
water quality deterioration, (Jha, et al., 2007). A variety of environmental factors are known to
affect zooplankton production. Recent research has focused on the relative importance of food
quantity and quality (Cole, et al., 2002). This study will be conducted to evaluate the effects of
live food and formulated diets on the growth and survival of giant gourami fry.

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Comparative Assessment of Different Types of Live Food on Growth Performance and Survival of Giant gourami (Osphronemus goramy) Fry Research proposal presented by: Andie John D. Tadeo MS Aquaculture College of Fisheries Central Luzon State University Science City of Munoz, Nueva Ecija 2014 Introduction In aquaculture, production of fish to market size within a short period is of highest importance. But, the success in the hatchery production of fish fingerlings for stocking in the grow-out production system is largely dependent mainly on the availability of suitable live food organisms for feeding fish larvae, fry and fingerlings to support good growth and health (Giri, et al., 2002). Live feeds also help restore the water quality of the culture system and are more easily accepted by cultured organisms. While live food is difficult to sustain and requires considerable space and expense, micro diets are easier to maintain and usually have lower production costs (Jones et al., 1993, Person-Le Ruyet et al., 1993). The development of formulated diets allows for production of valuable fish larvae without using live prey. The possibility of replacing live feed with manufactured diets from the onset of exogenous feeding has been investigated in several studies (Jones et al., 1993, Person-Le Ruyet et al., 1993). Limited success has been achieved in first-feeding larvae with the complete replacement of live feeds. In freshwater zooplankton, cyclopoid copepo ...
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