This research concluded that catfish fingerlings fed
with BD, 5% SD and 5% CD diets showed favorable
growth (weight gain, specific growth rate, average daily
growth, protein efficiency ratio & protein levels in fish
meat) when compared with the fingerlings received the 3%
SD feed. The survival rates did not vary significantly among
the four feed types, but the investment output ratio and feed
conversion rates were favorably higher for BD and 5% CD
than for 3% SD and 5% SD feed types. Red tilapia fish that
were fed with a diet of standard feed mixed with 10%
Spirulina alga had a higher growth rate and weight gain than
the control group (Lu & Hiroo, 2004). The results of this
research are similar to those found by Promkunthong and
Pipattanwattankhul (2005) in which catfish fed with a diet
of standard feed mixed with 10% Spirulina alga had the
highest protein efficiency ration and the most carotenoids in
their meat.