Jerry, you are right, those are least detectable level of chloramphenicol traces in every country mentioned. I really agree with you about not to use chloramphenicol, but in my case sometimes find people who is working with this antibiotic and they know everything about, but still using it. What can I do? I strongly recommend them not to use it, and if the use it in the past, explain them how to avoid problems. All depends on them!!!
Let me ask a question: Why we can not use chloramphenicol in animals but in human is current practice (for eye infectios and salmonellosis)? I know palmitate, succinate and HCl types of chloramphenicol, but they (many countries) still use in human treatment.
"E. Jerry Oliveras, Laboratory Director & President" <jerry@anresco.com> escribió: 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. ThanksJerryANRESCO-----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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