Dietary factors do not influence the clinical expression of swine dysentery

Roy N. Kirkwood, DVM, PhD; Suxi X. Huang, PhD; Margaret McFall; Frank X. Aherne, PhD

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Three experiments were performed to determine the effect ofmanipulating the amount of fermentable substrates entering thelarge intestine on the incidence of swine dysentery after experimentalinfection with 1.8 x 1010 Brachyspira hyodysenteriaeper day for 3 consecutive days. In Experiment One, diets wereformulated to contain a high proportion of fermentable fiber (30%wheat shorts and 15% raw potato starch), or a high proportionof nonfermentable fiber (15% ground oat hulls), or a low proportionof fiber (corn-soybean meal diet). In Experiment Two, diets wereformulated either with highly digestible parboiled rice and animalprotein, which would provide little substrate for fermentationin the large intestine, or 25% beet pulp to provide a high contentof fermentable fiber. A commercial barley-wheat soybean meal growerdiet was used as the control. In Experiment Three, the experimentaldiet was formulated with highly digestible cooked rice and animalprotein and the control diet was a commercial barley-wheat soybeanmeal grower diet. In all experiments, the diets failed to providesatisfactory protection against experimental infection withB. hyodysenteriae.

Keywords: Brachyspira hyodysenteriae, diet, fermentable fiber

RIS citationCite as: Kirkwood RN, Huang SX, McFall M, et al. Dietary factors do not influence the clinical expression of swine dysentery. J Swine Health Prod 2000;8(2):73-76.

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