You really should be aware that in Europe, Canada and the United States
chloramphenicol cannot be used at all to treat food producing animals
including those of aquaculture such as shrimp. The tolerance limits you
speak of are merely the least detectable amount of the compound the
regulatory labs in those countries feel comfortable taking to court as
confirmed positive findings. I know the US FDA is currently working on a
HPLC-thermospray MS method that will get down to 0.1 ppb so the US limit
will decrease accordingly. The main point is the objection to any use in
any food producing animal regardless of withdrawal time or concentration in
the tissues. I think this kind of misunderstanding is what is fueling the
recent problems with import shrimp etc. in EU and US especially from PRC,
Thailand, etc.
Thanks
Jerry
ANRESCO
-----Original Message-----
From: Gabriel Rivera [mailto:griveralo@yahoo.com]
Sent: Thursday, June 13, 2002 9:48 PM
To: Balamurugan; farmavetID@yahoogroups.com; rivanabad@hotmail.com;
CB4BIOMEDX@aol.com; inforvet@cec.eu.int; Guy.Hocking@coles.com.au
Cc: jerry@anresco.com; daniel@sudamar.com; wocksandip@eth.net;
sanco-webmaster@cec.eu.int
Subject: Re: chlorampnicol....
Hello Mr. Balamurugan, in first place let me excuse for not responding until
now, our company staff were visiting some shrimp producer areas in Ecuador
this week. As I now, chloramphenicol has a withdrawal time of 21 days,
after that time you will find traces of this antibiotic. Is important to
consider what was the applied dose of chloramphenicol during treatment
because depending on that you can deal with these maximum concentration
(tolerance limits) in shrimp after treatment:
For European Union, 0.3 ppb
For USA (FDA), 1.0 ppb
And, for Canada, 2.5 ppb (this limit will be decrease).
Antibiotic will be deposite in muscle, mainly.
Balamurugan <balan@hd2.dot.net.in> escribió:
dear sir,
When the shrimp fed with chlorampnicol mixed feed, how long the
chlorampnicol will available in the shrimp meet. I heard that, if the shrimp
were harvested after 25 days of chlorampnicol mixed feeding, it would not be
detectable. Is it correct?
Where the antibiotic is depositing, in the shrimp body (shell, meet, etc).
Is there any way to remove this from the shrimp?
regards
S.Balamurugan
****************************************************************************
*******
S.Balamurugan, M.Sc,.(Ph.D.).,
E.Mail:balasm@rediffmail.com
Phone(O) 958933-892164/79
Phone(R) 0891-739990
***************************************************************************
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