Treatment Summaries - Improved Shrimp Production
Improved Shrimp Production from
Ponds with Probiotics and Reservoir Systems: Philippine
Experience
In the past few years, shrimp growers
could hardly produce large volume of market size shrimps
due to the occurrence of diseases primarily attributed
to poor water quality.
Recently, however, Atty. David Tirol,
a shrimp grower in Bohol, Philippines, harvested tiger
shrimps (Penaeus monodon) with a total biomass of 3,700
kgs from one of his pond compartments with an area of
3,700 m2. Using a stocking density of 120,000
PLs (32.4 PLs per m2), he got an average body
weight of 36.4 g and survival rate of 84.6% after 130
days culture period. With an average market price of
PhP431.50 (US$ 8.63) per kg at the time of harvest
sometime in February 2002, Atty. Tirol was able to
obtain a gross sale of about PhP 1.98 million (US$
39,600) and a net profit of about PhP1.5 million
(US$30,000).
What are the protocols currently being
used by Atty. Tirol that enables him to achieve such
significant result and the succeeding more harvest of
tiger shrimps in his ponds?
In addition to the usual pond
preparation practices, Atty. Tirol uses Waste
Digester to eliminate organic bottom solids that
accumulates on the pond bottom after harvest. During the
culture period, a regular application of this product is
also undertaken to prevent build-up of waste materials
and toxic bottom solids. Likewise, he uses the
Aquaculture at regular frequency to eliminate Vibrio and
other luminous bacteria present in the water column, and
at the same time, to maintain good water quality
throughout the culture period. No other chemicals were
used except for these products known to contain
only naturally occurring bacteria and enzymes that are
environment-friendly and harmless to humans, plants, and
animals. He also maintains a reservoir system where the
incoming water for the grow-out pond is temporarily
stored for a few days before being used in the grow-out
ponds.
Greater harvest of shrimps was also
achieved by shrimp growers in other areas in the
Philippines such as in Central Visayas, Western Visayas,
and Northern Mindanao following the recommended application rates and
procedures.
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