New Zealand Journal of Agricultural Research abstracts
Efficacy of two different types of montmorillonite to reduce the
toxicity of aflatoxin in pigs
Ying Hua Shi1,*
Zi Rong Xu2
Cheng Zhang Wang1
Yu Sun1
1College of Animal Husbandry and Veterinary Science
Henan Agricultural University
Zhengzhou, China
2Feed Science Institute
Zhejiang University
Hangzhou, China
Author for correspondence: annysyh@sohu.com
Abstract Experiments were conducted to compare the efficacy
of montmorillonite (M) and montmorillonite nanocomposite (MN) to reduce
the toxicity of aflatoxin (AF) in growing/finishing pigs. A total of
144 weaned pigs were assigned to six dietary treatment groups (0 g of
adsorbents and 0 mg of AF/kg feed; 3 g of M/kg feed; 3 g of MN/kg feed;
0.11 mg of AF/kg feed; 0.11 mg of AF plus 3 g of M/kg feed; and 0.11 mg
of AF plus 3 g of MN/kg feed). Compared to the control, AF alone
decreased average daily gain (ADG) by 12.9% (P < 0.05), and
increased feed/gain ratio by 7.54% (P < 0.05). Improvements
in average daily gain and feed/gain ratio by 13.0 and 4.80% (P < 0.05)
by the addition of MN to the AF diet demonstrated the ability of MN to
reduce the toxic effects of AF. However, the addition of M did not
diminish the growth inhibitory effects of AF (P > 0.05). AF
intake increased relative weights of liver, kidney, spleen and pancreas
by 8.24, 27.3, 41.2 and 42.9% (P < 0.05), and resulted in
significant alterations of serum biochemical values and enzymatic
activities (P < 0.05). Pigs fed the MN with AF diet had
appreciable improvements in AF-induced organ lesions and aberrations in
serum profiles (P < 0.05), whereas pigs fed the M with AF
diet had relative organ weights and serum profiles similar to those of
pigs fed AF alone (P > 0.05), which indicated beneficial
effects of MN and non-protective effects of M. These findings suggested
that feeding MN can effectively prevent the negative effects associated
with aflatoxicosis in pigs.
Keywords aflatoxin; detoxification;
montmorillonite
nanocomposite; pigs; toxicity
A07016; Online publication date 29 October 2007; Received 20
February 2007; accepted 30 August 2007
New Zealand Journal of Agricultural Research, 2007, Vol. 50:
473–478
0028–8233/07/5004–0473 © The Royal Society of New Zealand 2007
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