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Abstract
1. The individual and combined effects of T‐2 toxin and 4,15‐diacetoxyscirpenol (DAS) on laying hens were investigated in an experiment consisting of a 2 X 2 completely randomised factorial design with dietary concentrations of 0 and 2 mg/kg T‐2 toxin and 0 and 2 mg/kg DAS.
2. Individually, T‐2 toxin and DAS induced oral lesions in half of the hens and decreased significantly egg production and food intake.
3. The effects of T‐2 toxin and DAS were additive for reduced food consumption and incidence of oral lesions. However, a synergism for reduced egg production was observed during the last experimental period.
4. No effects on body weight were observed during this study. Mild changes in selected plasma enzymes activities and no change in liver malondialde‐hyde content were detected.
5. The combination of T‐2 toxin and DAS was more toxic than the single mycotoxins, for some parameters, and therefore, may pose a greater economic threat to the poultry industry than either of the toxins individually.
Notes
Permanent address: Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Apartado Aéreo 76948, Santa Fé de Bogotá, Colombia.
