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Keywords:

  • ochratoxin A;
  • aflatoxin B1;
  • White Leghorn breeder hens;
  • residues;
  • tissues;
  • eggs

Abstract

BACKGROUND: Mycotoxins, the secondary fungal metabolites, are unavoidable contaminants of human and animal food and feeds. The objectives of this study were to evaluate the effect of concurrent feeding of ochratoxin A (OTA) and aflatoxin B1 (AFB1) to breeder hens, upon their deposition in different tissues and eggs.

RESULTS: Residues of OTA and AFB1 in (ng g−1) were significantly higher in liver followed by kidneys and breast muscles by 22.54 ± 1.48, 4.22 ± 0.93 and 0.56 ± 0.06 for OTA (group fed OTA at 5 mg kg−1 diet) and 1.44 ± 0.21, 0.25 ± 0.01 and 0.03 ± 0.01 for AFB1 (group fed AFB1 at 5 mg kg−1 diet), respectively. Residues of OTA and AFB1 in eggs appeared at days 3 and 5 of toxin feeding and disappeared at days 5 and 6 of withdrawal of mycotoxins contaminated feed, respectively. The residues of OTA and AFB1 were significantly lower in the tissues of hens fed these toxins concurrently compared with the groups fed OTA and AFB1 independently.

CONCLUSIONS: Residues of OTA and AFB1 appeared in the tissues and eggs of laying hens kept on OTA- and AFB1-contaminated diets. Concurrent feeding of OTA and AFB1 to hens significantly decreased the concentration of OTA and AFB1 residues in the tissues and eggs. Copyright © 2011 Society of Chemical Industry