Ochratoxin A in Ruminants–A Review on Its Degradation by Gut Microbes and Effects on Animals

Toxins

Muhammad Mobashar²  Jürgen Hummel²  Ralf Blank¹ 

[1] Institute of Animal Nutrition and Physiology, Christian-Albrechts-University Kiel, 24098 Kiel, Germany;Institute of Animal Science, University of Bonn, Endenicher Allee 15, 53115 Bonn, Germany;

关键词: OTA;    mycotoxin;    enzymatic degradation;    diet;    protozoa;    carry over;    milk;   

DOI  :  10.3390/toxins204809

来源: mdpi

【 摘 要 】

Ruminants are much less sensitive to ochratoxin A (OTA) than non-ruminants. The ruminal microbes, with protozoa being a central group, degrade the mycotoxin extensively, with disappearance half lives of 0.6–3.8 h. However, in some studies OTA was detected systemically when using sensitive analytical methods, probably due to some rumen bypass at proportions of estimated 2–6.5% of dosage (maximum 10%). High concentrate proportions and high feeding levels are dietary factors promoting the likeliness of systemic occurrence due to factors like shifts in microbial population and higher contamination potential. Among risk scenarios for ruminants, chronic intoxication represents the most relevant.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland