Determination of Serum Aflatoxin B1-lysine to Evaluate the Efficacy of an Aflatoxin-Adsorbing Feed Additive in Pigs Fed an Aflatoxin B1-contaminated Diet.
Mycotoxin research(2016)
Abstract
In this study, serum aflatoxin B1 (AFB1)-lysine was determined in order to evaluate the in vivo efficacy of a hydrated sodium calcium aluminosilicate (HSCAS) in pigs fed AFB1. Twenty-four 49-day-old crossbred barrows were maintained in individual cages and allowed ad libitum access to feed and water. A completely randomized design was used with six animals assigned to each of four dietary treatments for 21 days as follows: (A) basal diet (BD), (B) BD supplemented with 0.5 % HSCAS, (C) BD supplemented with 1.1 mg/kg AFB1, and (D) BD supplemented with 0.5 % HSCAS and 1.1 mg/kg AFB1. HSCAS was able to alleviate the toxic effects of AFB1 on pigs and reduce (P < 0.05) the levels of serum AFB1-lysine. Cumulative reductions of adduct yield values, calculated through the equation [(pg AFB1-lysine/mg albumin) / (μg AFB1/kg body weight)], were 53.0, 62.8, and 72.1 after 7, 14, and 21 days of oral exposure, respectively. AFB1-lysine has potential as an AFB1-specific biomarker for diagnostic purposes and for evaluating the efficacy of chemoprotective interventions in pigs.
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Key words
AFB1-lysine adduct,LC-MS/MS,Adsorbent,Swine
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