Dietary chitosan-Cu chelate affects growth performance and small intestinal morphology and apoptosis in weaned piglets

Xiaojing Yue, Luansha Hu, Xiongfeng Fu, Mengyuan Lv and Xinyan Han
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Xiaojing Yue: Key Laboratory of Animal Nutrition and Feed Science in East China, Ministry of Agriculture, College of Animal Science, Zhejiang University, Hangzhou, P.R. China
Luansha Hu: Key Laboratory of Animal Nutrition and Feed Science in East China, Ministry of Agriculture, College of Animal Science, Zhejiang University, Hangzhou, P.R. China
Xiongfeng Fu: Key Laboratory of Animal Nutrition and Feed Science in East China, Ministry of Agriculture, College of Animal Science, Zhejiang University, Hangzhou, P.R. China
Mengyuan Lv: Key Laboratory of Animal Nutrition and Feed Science in East China, Ministry of Agriculture, College of Animal Science, Zhejiang University, Hangzhou, P.R. China

Czech Journal of Animal Science, 2017, vol. 62, issue 1, 15-21

Abstract: The effects of dietary chitosan-copper chelate (CS-Cu) on growth performance, diarrhea, intestinal morphology and epithelial cell apoptosis in weaned piglets was investigated. One hundred and sixty Duroc × Landrace × Yorkshire weanling barrows with an average body weight of 7.75 kg were randomly assigned to one of the following dietary treatments: (1) control, (2) 100 mg Cu/kg diet from CuSO4, (3) 100 mg Cu/kg diet from CuSO4 mixed with chitosan (CuSO4+CS), (4) 100 mg Cu/kg diet from CS-Cu. The feeding trial lasted for 30 days. The results showed that the pigs receiving a diet containing CS-Cu had higher average daily gain and lower diarrhea incidence than the pigs receiving dietary CuSO4 and CuSO4+CS. Villus height and the ratio of villus height/crypt depth in duodenum, jejunum, and ileum were higher and crypt depth was lower in CS-Cu treated pigs than in pigs fed dietary CuSO4 or CuSO4+CS. An apparent decrease of ileal epithelial cell apoptosis in pigs fed CS-Cu diet was found. The activities of antioxidant enzymes were higher in pigs fed dietary CS-Cu than in those fed other diets. The results indicated that dietary CS-Cu showed better biological and physiological function in improving small intestinal morphology and reducing diarrhea incidence.

Keywords: CS-Cu; villus morphology; daily gain; diarrhea incidence; ileal epithelial cell; antioxidant enzymes (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:62:y:2017:i:1:id:86-2015-cjas

DOI: 10.17221/86/2015-CJAS

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