Asian-Australasian Journal of Animal Sciences

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Effects of feeding corn naturally contaminated with aflatoxin on growth performance, apparent ileal digestibility, serum hormones levels and gene expression of Na+, K+-ATPase in ducklings

  • Abbasi, Farzana (School of Life Science and Engineering, Southwest University of Science and Technology) ;
  • Liu, Jingbo (School of Life Science and Engineering, Southwest University of Science and Technology) ;
  • Zhang, Hongfu (State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences) ;
  • Shen, Xiaoyun (School of Life Science and Engineering, Southwest University of Science and Technology) ;
  • Luo, Xuegang (School of Life Science and Engineering, Southwest University of Science and Technology)
  • Received : 2017.05.16
  • Accepted : 2017.08.03
  • Published : 2018.01.01
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Abstract

Objective: A 14-d trial was conducted to determine the effects of feeding corn naturally contaminated with aflatoxin $B_1$ ($AFB_1$) on growth performance, apparent ileal digestibility, serum hormones levels and gene expression of $Na^+$, $K^+-ATPase$ in ducklings. Methods: A total of 704 ducklings were blocked on the basis of sex and body weight (BW), and then allocated randomly to one of the following two treatments: i) CON, basal diet and ii) $AFB_1$, diets with 100% of normal corn replaced with $AFB_1$ contaminated corn. There were 22 pens per treatment and 16 birds per pen. The concentration of $AFB_1$ was 195.4 and $124.35{\mu}g/kg$ in the contaminated corn and $AFB_1$ diet, respectively. Results: The $AFB_1$ decreased average daily gain, average daily feed intake, d 7 BW, final BW in the whole trial, and feed conversion ratio (FCR) during d 8 to 14 and d 1 to 14 by 10% to 47% (p<0.05), while FCR during d 1 to 7 was increased (p<0.05). $AFB_1$ did not affect mortality to 7 d of age, and then increased to 5.8% from 8 to 14 d of age (p<0.01). Apparent ileal gross energy digestibility was reduced by $AFB_1$, whereas apparent ileal digestibility of dry matter, nitrogen, and amino acid was improved (p<0.01). Feeding $AFB_1$ diets increased serum concentration of leptin and insulin-like growth factors-1 (IGF-1) (p<0.05), but had no effect on neuropeptide Y, ghrelin, cholecystokinin-8 or insulin (p>0.05). Dietary treatments did not influence relative expression of jejunal $Na^+$, $K^+-ATPase$ gene (p>0.05). Conclusion: Taken together, feeding corn naturally contaminated with $AFB_1$ reduced growth performance, improved apparent ileal digestibility, and affected serum leptin and IGF-1 in ducklings from d 1 to 14.

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References

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