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OJVR
Online Journal of
Veterinary Research©
(Including Medical
and Laboratory Research)
Established 1994
ISSN 1328-925X
Volume 25 (7):481-486,
2021.
Effect of bentonite
and magnotox on immune and biochemical markers,
and cecum flora in Ross 308 broilers fed
aflatoxin-contaminated feed.
Payman
Mahmoudi Nasr1*, Kaveh
Jafari khorshidi2
1PhD Student in
Poultry Nutrition, Department of Animal Science, Qaemshahr
Branch, Islamic Azad University, Qaemshahr, Iran
2Department of
Animal Science, Qaemshahr Branch, Islamic Azad
University, Qaemshahr, Iran
ABSTRACT
Mahmoudi Nasr P, Khorshidi
KJ., Effect of bentonite and magnotox on blood immune and biochemical markers and cecum
flora in Ross 308 broilers fed aflatoxin-contaminated feed, Volume 25 (7):481-486,
2021. Groups of 15 eight day-old male Ross 308
broiler chicks each were fed 1 or 2mg/kg Aspergillus flavus
with or without 0.5% bentonite and/or Magnotox daily
over 42 days. Controls consisted of birds fed basal diet or without aflatoxin
(0 mg/kg aflatoxin). Blood and fecal samples were taken at 24 and 42 days. Compared with basal diet controls, by day 24
of feeding, we found increased serum protein in birds given bentonite (~18%)
but large declines (~-32%) in those given 2mg/kg aflatoxin whereas other diets
had no effect on any parameter. By 42 days, bentonite and magnatox
increased serum
albumin ~9% (P <0.01) but reduced AST ~10% P < 0.007)
whereas 2mg/kg aflatoxin reduced serum protein and albumin ~-32% but enhanced
AST ~25% (P < 0.0001) by day 42
compared with aflatoxin controls. However, by 42 days, mixed diets with
bentonite, magnatox with 1mg/kg aflatoxin boosted serum proteins and reduced AST
except in birds given 2mg/kg aflatoxin. Magnatox may have
boosted antibody ~6% against infectious bronchitis whereas bentonite reduced
~-19% them (P < 0.02). Aflatoxin appeared to reduced antibody against bursal
disease by ~-10-12% (P < 0.02). We found no effect by any other mixed diet. Our
findings suggest that binders reduced effects of 1mg/kg aflatoxin on serum liver enzymes and boosted
proteins especially by 42 days. However the binders had no effect on the higher
dose of 2mg/kg aflatoxin. Aflatoxin reduced serum protein and albumin in
chickens fed aflatoxin contaminated feed. We found no effect on bacterial
numbers in cecum suggesting that our binders had no effect on
microflora
Keywords:
Aflatoxin, Bentonite, Broiler chicken, Blood and immunity profile, Magnotox
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