USE OF NATURAL PROBIOTICS
From: GOH Philip MH pgmh_2000@yahoo.com.sg
To: shrimp@yahoogroups.com
Sent: 20 October 2004
Question:
Have you heard that white spots disease can be cured
with natural probiotics ?
Philip GOH M H
Singapore
e-mail: Pgmh_2000@yahoo.com.sg
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COMMENTS 1:
Yes, most of us have heard that one, although most
claims were for reduced mortality, not for an absolute cure. Other
treatments that have been offered & tested include maintaining high
phenolphtalein alkalinity while adding tiny amounts of a secret "water
tonifier", intentional stocking of PLs infected with other (less
deadly) viril, application of garlic and citrus extract, etc.
Julio Estrada
e-mail: julioe@speed.net.ec
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COMMENTS 2:
I have done what we call today, organic aquaculture,
in P. monodon, some 25-30 years ago during my youth...
Leonido C. Tala
e-mail: leonidoctala@yahoo.com
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comments 3:
Yes, some of the bacillus strains produce exo-enzymes
while multiplying. These exo enzymes can control white spot
disease.
We are also manufacturers of probiotics and have an excellent product
BACIMOR AVV (Anti vibrio & virus) which we have been supplying to many
farmers in India for the past 3 years.
Dr.S.Vasudevan
e-mail: hiline@xlweb.com
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Our Korean inventors said they were successful in
curing a problem area and their BioPlus and BioGold are non-toxic,
eco-friendly. You are right, besides reducing mortality, the shrimps’
immunity and digestive system improved dramatically. Productivity
increased by some 25%.
Philip GOH M H
Singapore
e-mail: pgmh_2000@yahoo.com.sg
***************
comments 5:
I would be more cautious in saying any product
can cure white spot. What we see is probably better survival rate
again, the end result is subject to variable shifting parameters. I have
seen test results using sulfonated -polysaccharides that showed survival
rates of 75 - 85 % in controlled laboratory challenged tests with WSSV
on shrimp 9 - 12 g. But same tests on shrimp 4 - 6 g, survival was
approx 40 ~ 50 %. All we can conclude the sulfonated -polysac.
does increase immunity. We have been looking into this for some time but
cannot claim 100% success. This is where proper disease monitoring and
screening comes in. Success of crop would require a holistic and
integrated approach.
In event of WSSV outbreak, the only practice now - termination or
emergency harvest (if shrimp is big enough). I am not sure if farms
will want to wait further to see how far the WSSV infected ponds
will go which may threaten the whole farm. A little yeast ....
leavened the whole dough.
Robin Liew
e-mail: robinliew@myjaring.net
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COMMENTS 6:
I totally agree with you, in case there is outbreak
of wssv, termination and or
total harvest is the best solution so far. Any cure or remedy will be more
expensive and difficult. The old saying "prevention is better than
cure" But we have difficulty in getting pls
than can be guaranteed free and resistance to the virus. Maybe someone can
recommend hatcheries that are capable to do so.
Alex Wong
e-mail: alexwongnl@yahoo.com
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COMMENTS 7:
We know of PL supply source that has good disease
monitoring - they screen for WSSV, MBV and HPV for monodon .
Robin Liew
e-mail: robinliew@myjaring.net
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comments 8:
The first thing to clarify is exactly which of the
"white spot" diseases you are dealing with; for example there is
the "white spot disease" caused by the white spot syndrome virus
(WSSV), the so-called bacterial white spot syndrome, or the white spots
caused by exposure to high pH or alkalinity.
Having said that, its pretty likely that you are interested in WSSV, so:
Can probiotics cure infected shrimp of white spot disease caused by
WSSV? I don't think so and can't think of a mechanism whereby this
might happen. This means if a pond is stocked with PL's that are
heavily-infected with WSSV then sooner or later they will succumb to
the disease. However, one factor that will influence the course of
the disease is how much stress the stock are exposed to, and this is
one area where probiotics can help, for example by suppressing
disease causing bacteria which are contributing to a high-stress
environment in the pond.
Can probiotics help prevent shrimp from becoming infected with WSSV?
Well, that's an interesting question. In ponds, the virus is often
transmitted by cannibalism of sick or dying shrimp, or directly
through contaminated water. There is evidence from both tank tests
and field reports that probiotics can provide protection against
infection via the water column (see for example Microbiology
Australia Vol 19, issue 2, p22, May 1998).
Kevin Healey
Research and Development Manager
IAH Sales Pty Ltd
e-mail: khealey@iahp.com.au
www.iahp.com.au