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Effects of dietary protein level and zinc oxide supplementation on the incidence of post-weaning diarrhoea in weaner pigs challenged with an enterotoxigenic strain of Escherichia coli

Heo, J.M., Kim, J.C., Hansen, C.F., Mullan, B.P., Hampson, D.J.ORCID: 0000-0002-7729-0427, Maribo, H., Kjeldsen, N. and Pluske, J.R.ORCID: 0000-0002-7194-2164 (2010) Effects of dietary protein level and zinc oxide supplementation on the incidence of post-weaning diarrhoea in weaner pigs challenged with an enterotoxigenic strain of Escherichia coli. Livestock Science, 133 (1-3). pp. 210-213.

Link to Published Version: http://dx.doi.org/10.1016/j.livsci.2010.06.066
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Abstract

The interactive effects of dietary protein level, zinc oxide (ZnO) supplementation and experimental infection with enterotoxigenic E. coli (ETEC) on the incidence of post-weaning diarrhoea (PWD) and indices of protein fermentation were examined. Ninety-six, individually housed 21-day-old pigs were used in a split plot experiment, with the whole plot being challenge or no challenge with ETEC and the dietary treatments used as subplots and arranged in a completely randomised 2 × 2 factorial design, with the factors being (i) 2 dietary protein levels [251 g/kg (high) vs. 192 g/kg (low) crude protein] and (ii) addition or no addition of 2500 ppm ZnO. Between days 1 and 14 after weaning, ETEC infection increased faecal consistency (FC; looser faeces) but only in pigs fed the high protein diet (P < 0.05) or without ZnO (P < 0.1). Pigs fed a high protein diet without ZnO showed more loose faeces (higher FC) compared to pigs fed either a high protein diet with ZnO supplementation or pigs fed lower protein diets without and with ZnO supplementation (P < 0.05). Feeding either a low protein diet or ZnO decreased (P < 0.05) PWD. Feeding a low protein diet decreased (P < 0.001) plasma urea nitrogen (PUN) and faecal NH3-N contents. There were no 2- or 3-way interactions (P > 0.05) between the independent variables for PWD, PUN and faecal NH3-N. The results indicate that feeding a low protein diet supplemented with amino acids or adding ZnO to either low or high protein diets could be used as dietary strategies to reduce PWD in piglets.

Item Type: Journal Article
Murdoch Affiliation: Animal Research Institute
School of Veterinary and Biomedical Sciences
Publisher: Elsevier BV
Copyright: © 2010 Elsevier B.V.
URI: http://researchrepository.murdoch.edu.au/id/eprint/2676
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