The effects of extrusion and enzyme addition in wheat based diets on fermentation in the large intestine and expression of swine dysentery
Document Type
Conference Proceeding
Publication Date
1997
Conference Title
Sixth Biennial Conference of the Australasian Pig Science Association APSA
Place of Publication
Canberra
ISBN
0 646 34188 x.
ISSN
1324-9177
Keywords
Swine, Pigs, Dysentery, Diet, Wheat based diet, Fermentation
Disciplines
Agricultural Science | Agriculture | Animal Sciences | Food Science | Meat Science | Nutrition
Abstract
Diets containing soluble non-starch polysaccharides (NSP) and resistant starch (RS) have been shown to increase both hindgut fermentation and the incidence of swine dysentery (SD) (Pluske et al., 1996). The aim of this study was to investigate the effects of extrusion (to reduce RS) and exogenous enzyme addition (to reduce soluble NSP) to a wheat based diet, on the extent of fermentation in the large intestine and on expression of SD. Wheat/animal protein diets were prepared using extrusion of wheat and addition of an enzyme premix containing xylanase and protease activity, in a 2 x 2 factorial design. Specific pathogen free Large White x Landrace pigs (n=48), weaned at 21 d, were fed the diets for 4 weeks. Six pigs in each group were slaughtered for assessment of gut parameters (Table 1). The remaining six pigs were infected with Serpulina hyodysenteriae, fed the same diets for a further 4 weeks, and monitored for development of SD (clinical signs, rectal swabs, post-mortem lesions, S. hyodysenteriae isolated at postmortem).
Recommended Citation
Durmic, Z., Pethick, D.W., Mullan, B.P., Schulze, H., Hampson, D.J., 1997. The effects of extrusion and enzyme addition in wheat based diets on fermentation in the large intestine and expression of swine dysentery. In “Manipulating Pig Production VI”, ed., P.D. Cranwell, Australasian Pig Science Association, Werribee, p. 180.
