Feeding different types of cooked white rice to piglets after weaning influences starch digestion, digesta and fermentation characteristics and the faecal shedding of β-haemolytic Escherichia coli
Pluske, J.R., Montagne, L., Cavaney, F.S., Mullan, B.P., Pethick, D.W. and Hampson, D.J. (2007) Feeding different types of cooked white rice to piglets after weaning influences starch digestion, digesta and fermentation characteristics and the faecal shedding of β-haemolytic Escherichia coli. British Journal of Nutrition, 97 (02). pp. 298-306.
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Forty-eight, 21-d-old pigs were used to examine the effects of different types of cooked white rice on starch digestion, digesta and fermentation characteristics, shedding of b-haemolytic Escherichia coli and performance after weaning. Pigs received one of three rice-based diets: (i) mediumgrain Amaroo (AM), (ii) long-grain Doongara (DOON), and (iii) waxy (WAXY). The remainder of the diet consisted predominantly of animal proteins. A fourth diet contained mainly wheat, barley and lupins (WBL). On days 1, 3, 7 and 9 after weaning, a faecal swab was taken for assessment of b-haemolytic E. coli and faecal consistency. Apparent digestibility of starch measured in the ileum 14 d after weaning was highest (P=0·004) in AM and WAXY and lowest, but the same (P>0·05), in DOON and WBL. Starch digestibility in the rectum was highest in all rice diets (P<0·001). Digesta viscosity was highest in pigs fed WBL in both the ileum (P<0·001) and caecum (P=0·027). Pigs fed rice generally had lighter (P<0·05) gastrointestinal organs than pigs fed WBL. Performance of pigs was similar for all treatments; however, pigs fed rice-based diets had a higher (P<0·001) carcass percentage than pigs fed WBL. Pigs fed WBL produced more acid (P<0·05) but had lower molar proportions of acetate (P<0·05), isobutyrate (P<0·01) and isovalerate (P<0·001) and a higher molar proportion of butyrate (P<0·01) in the large intestine than pigs fed rice. Shedding of E. coli was low; however, pigs fed AM and WBL shed less E. coli than pigs fed other diets.
|Publication Type:||Journal Article|
|Murdoch Affiliation:||School of Veterinary and Biomedical Sciences|
|Copyright:||© The Authors 2007.|
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