Abstract

ROJO, Federico et al. Comparison of methods to evaluate aflatoxin B₁ exposure in dairy cattle and the effect of mycotoxin adsorbents to reduce AFM₁ residues in milk. Rev. mex. de cienc. pecuarias [online]. 2014, vol.5, n.1, pp.1-15. ISSN 2448-6698.

The adsorbents have been extensively used to prevent mycotoxicosis and the carryover of the toxins or their metabolites into the food chain. Particularly, the aflatoxins binding in the gastrointestinal tract of ruminants and reduce the aflatoxin M₁ (AFM₁) carryover to milk. This study was carried out to evaluate two exposition methods to AFB₁ in Holstein cows and monitoring AFM₁ in milk. Additionally, the potential of three aflatoxin binders were evaluated in both experiments. Results showed the carryover of AFB₁ to AFM₁/day to be 3.35 and 1.8 %, respectively. Data obtained in the second experiment showed an estimated carryover closer to those obtained from cows fed with natural aflatoxin contaminated feeds. Unlike yeast cell wall glucomannan, both aluminosilicate adsorbents were found to significantly reduce the carryover of AFM₁ to raw milk (P<0.05).

Keywords : Aflatoxins; Adsorbent; Milk; HPLC.