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Effects of individual and combined administration of ochratoxin A and aflatoxin B1 in tissues and eggs of White Leghorn breeder hens.

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 B(1) (AFB(1) ) to breeder hens, upon their deposition in different tissues and eggs.


RESULTS
Residues of OTA and AFB(1) 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 AFB(1) (group fed AFB(1) at 5 mg kg(-1) diet), respectively. Residues of OTA and AFB(1) 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 AFB(1) were significantly lower in the tissues of hens fed these toxins concurrently compared with the groups fed OTA and AFB(1) independently.


CONCLUSIONS
Residues of OTA and AFB(1) appeared in the tissues and eggs of laying hens kept on OTA- and AFB(1) -contaminated diets. Concurrent feeding of OTA and AFB(1) to hens significantly decreased the concentration of OTA and AFB(1) residues in the tissues and eggs.