The study aimed to investigate the efficacy of new mycotoxin adsorbents based on purified and activated bentonites combined with yeast and phytogenic compounds in fattening pigs. The experiment involved 96 pigs (31.2±2.4 kg). Control (C) group was fed a diet naturally contaminated with mycotoxins (5 mg/kg deoxynivalenol, DON) without an adsorbent. Treated groups received the feed with mycotoxin adsorbents: purified and activated bentonite (T1), purified and activated bentonite, yeast derivatives, phytogenic substances (T2), and purified, activated, and sulphurated bentonite with phytogenic substances (T3). Evaluated parameters involved growth performance, organ weight, small intestine and liver histopathology, complete blood count, serum biochemistry, antioxidant status of the organism and total and free DON content in urine. In all treated groups, an significant increase in intestinal GSH and GSH/GSSG ratio was observed when compared to C. No significant effects on liver and kidney weight, complete blood count, serum or intestinal malondialdehyde concentration, or total/free DON content in urine were observed. All adsorbents improved histopathological findings in the liver when compared to C. Moreover, T1, and T2 groups showed no presence of inflammatory reaction or necrotic changes in the livers. Although, mycotoxin adsorbents investigated in this study had no significant impact on pig growth performance, they reduced the oxidative stress, and on the tissue level they protected the jejunal tissue and liver parenchyma under deoxynivalenol challenge.
Novel use of superabsorbent polymers to deliver copper-based foliar fertilization was tested as a means against fungal mycotoxin production and monitor its effect on nutritional characteristics of wheat. Experiment was located in Žabčice, South Moravia region of the Czech Republic, tested wheat variety was 'Julie'. Differences in fertilization medium (water or superabsorbent polymers) and copper treatments (control, CuO, CuSO 4 , Cu-EDTA, CuO-nano) were tested. Effect of different variants on percentage of ash, crude protein, crude fat and crude fiber, acid detergent fiber, ashfree neutral detergent fiber, lignin, cellulose and starch were determined. Moreover, concentration of deoxynivalenol and T-2 toxin depending on the variant was measured. The highest amounts of crude fat and crude fiber were observed in variant of Cu-nano with superabsorbent polymers, the lowest in CuO respectively. Higher amount of cellulose was found in SAP control, lowest in water control. There were no significant differences in other nutritional parameters. Of the evaluated mycotoxins, we did not detect the deoxynivalenol in any of our samples. For the second evaluated mycotoxin, there was also no difference observed in T-2 toxin production.
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