Participation in Forum on April 28, 2014
Dear Mr. Srdjan Nesic,
I know that my father would be very pleased to answer you and to give you assistance. Nevertheless, I am very sad to inform you that my father is not able to answer you, because he is no longer among us.
Carla Barreto
Participation in Forum on January 27, 2014
Dear Fernando,These mycotoxin adsorbents (mixed with the feed), should be able in the gastrointestinal tract to form irreversible complexes with beta-cetolactone and alfa-bislactone groups of the AFB1 molecule. These non toxic complexes will be then eliminated in the feces.In this case, the process to reduce or avoid a continuous milk contamination with aflatoxin M1 can takes 24-48 h.Best regardsG ...
Participation in Forum on January 22, 2014
Dear Fernando,Continuing with my answer, I tell you that, if we consider a consumption of 30 kg of the contaminated complete feedingstuff (over wet matter)/cow/day, with 400 ppb of aflatoxin B1 and an average milk production of 20 Lts, the milk contamination with aflatoxin M1 can be 10-13 ppb, within 6 to 24 h.In the same feeding conditions and the same milk production, with a complete feedingstuf ...
Participation in Forum on January 21, 2014
Dear Fernando,
As indicated in the article, cows can transform aflatoxin B1 (AFB1) into aflatoxin M1 (AFM1) within 6 to 24h after consuming contaminated complete feedingstuffs with AFB1.
However, in some cases with aflatoxin B1 contamination in the complete feedingstuff of 5500 ppb, aflatoxin M1 was found in the milk within 3 to 6 hours after the consumption of AFB1.
Best regards
Gimeno
Article published the January 21, 2014
Aflatoxins B1 and M1. Biotransformation Aflatoxin B1 (AFB1) is a toxic secondary metabolite produced by several strains of Aspergillus, basically by Aspergillus flavus and Aspergillus parasiticus. Aspergillus is considered an “storage fungi”: a temperature of 25OC and a water activity (wa) of 0.83-0.95 are ideal conditions for growth and mycotoxin production. AFB1 can b ...
Participation in Forum on October 20, 2012
Dear Mr. Abdulcader and Mr. Ekramut Huque I would like to explain that it is very difficult to establish the maximum tolerable concentrations of mycotoxins. There are several factors that can influence (increase or decrease) the toxicity of mycotoxins in animals during the consumption of the contaminated feed. Some of these factors are: the animal species and breed; the duration of the contaminat ...
Participation in Forum on October 20, 2012
Dear Mr. Ekramul Huque, I already answered this question to Mr Abdulcader. I am going to send you (via your e-mail address) the pdf files with the information which was referred in my answer to Mr. Abdulcader. In my article entitled “Maximum tolerable concentrations of some mycotoxins: a review” published in www.engormix.com (Mycotoxins. English section), you can see the maximum tole ...
Participation in Forum on October 16, 2012
Dear Abdulcader
The European Union has Legislation for aflatoxin B1 in animal feed for poultry and other animals (1) and Guidance Levels for deoxinivalenol, zearalenone, ochratoxin A and fumonisins B1+B2 (2).
In spite of being not Guidelines, you can consult my article entitled “Maximum tolerable concentrations of some mycotoxins: a review” published in www.engormix.com (English section)
...
Participation in Forum on October 16, 2012
Dear Dr. Stephen Adejoro,
Thank you very much for your comment and information.
Regards.
Gimeno
Participation in Forum on October 16, 2012
Dear Dr. Fakhrul Islam,
Thank you very much for your comments.
The best regards.
Gimeno