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Online Journal of Veterinary Research©
(Including Medical and Laboratory Research)
Volume 25 (7):449-456, 2021.
Effect of bentonite and magnotox on intake, intestinal morphology, liver and body weights
of Ross 308 broilers fed aflatoxin-contaminated feed.
Payman Mahmoudi Nasr, Kaveh Jafari Khorshidi.
Department of Animal Science, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
Mahmoudi Nasr P, Khorshidi KJ., Effect of bentonite and magnotox on intake, intestinal morphology, liver and body weights of Ross 308 broilers fed aflatoxin-contaminated feed, Volume 25 (7):449-456, 2021. We report effects of bentonite and magnotox on intake, intestinal morphology, liver and body weights in Ross 308 fed aflatoxin contaminated feed. Groups of 15 eight day-old male Ross 308 broiler chicks each were fed 0, 1 or 2mg/kg Aspergillus flavus: with or without 0.5% bentonite and/or Magnotox daily over 42 days. Controls were basal diets and 0 mg/kg aflatoxin. Compared with basal diet controls, 0.5% bentonite nor magnatox had no effect on consumption. However, we did find that compared with aflatoxin controls, 2mg/kg aflatoxin boosted total intake ~2.7% (P < 0.04). We found no significant differences between other diets. Birds given bentonite or magnatox gained ~3% (P < 0.02) weight, whereas those given 2mg/kg aflatoxin lost ~20% (P < 0.0001) but we found no differences with other diets. Food conversion ratio (FCR) declined ~6% (P < 0.01) in birds given only binders whereas it increased ~22% (P < 0.0001) in those 2mg/kg aflatoxin but we found no differences with other diets. Villus width was ~12% (P < 0.006) increased in birds given magnotox but their length reduced 21% (P < 0.0001) in those given 2mg/kg aflatoxin. In this case we found highly significant differences with mixed diets; those fed bentonite or magnatox with 1mg/kg aflatoxin had increased villus length (P < 0.0001) or crypt depth (P < 0.04). However when given with 2mg/kg aflatoxin, we found no difference or reduced values. We find that 0.5% bentonite or magnatox may reduce toxic effects of 1mg/kg aflatoxin in diet.
Keywords: Aflatoxin, bentonite, magnotox, broilers, weight, liver, intestinal morphology.