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Online Journal of
Veterinary Research©
(Including Medical
and Laboratory Research)
Established 1994
ISSN 1328-925X
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
ABSTRACT
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.
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