A two-diet/two-period change over experiment was performed to investigate the effects of cocoa husks, as a source of dietary fiber and polyphenols, on pig intestinal microbial composition. Six pigs were fed a conventional cereal-based diet or a diet obtained by substitution of 7.5% of the conventional diet with cocoa husks for 3 weeks. Experimental diets were isoproteic and isoenergetic. At the end of each 3 week testing period, samples of fresh feces were collected and analyzed for microbial composition by fluorescence in situ hybridization. Cocoa husks did not affect feed intake, weight gain, and feed efficiency. Analysis of fecal microbial populations, grouped by phyla, showed a decrease of Firmicutes and an increase of Bacteroidetes in cocoa husk-fed pigs. Particularly, cocoa husks reduced fecal populations of the Lactobacillus-Enterococcus group and Clostridium histolyticum and increased the Bacteroides-Prevotella group and Faecalibacterium prausnitzii, suggesting a potential for cocoa husks in the improvement of intestinal microbial balance.

Effects of Cocoa Husk Feeding on the Composition of Swine Intestinal Microbiota / D. Magistrelli, R. Zanchi, L. Malagutti, G. Galassi, E. Canzi, F. Rosi. - In: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY. - ISSN 0021-8561. - 64:10(2016 Mar), pp. 2046-2052. [10.1021/acs.jafc.5b05732]

Effects of Cocoa Husk Feeding on the Composition of Swine Intestinal Microbiota

D. Magistrelli;R. Zanchi;L. Malagutti;G. Galassi;E. Canzi;F. Rosi
2016-03

Abstract

A two-diet/two-period change over experiment was performed to investigate the effects of cocoa husks, as a source of dietary fiber and polyphenols, on pig intestinal microbial composition. Six pigs were fed a conventional cereal-based diet or a diet obtained by substitution of 7.5% of the conventional diet with cocoa husks for 3 weeks. Experimental diets were isoproteic and isoenergetic. At the end of each 3 week testing period, samples of fresh feces were collected and analyzed for microbial composition by fluorescence in situ hybridization. Cocoa husks did not affect feed intake, weight gain, and feed efficiency. Analysis of fecal microbial populations, grouped by phyla, showed a decrease of Firmicutes and an increase of Bacteroidetes in cocoa husk-fed pigs. Particularly, cocoa husks reduced fecal populations of the Lactobacillus-Enterococcus group and Clostridium histolyticum and increased the Bacteroides-Prevotella group and Faecalibacterium prausnitzii, suggesting a potential for cocoa husks in the improvement of intestinal microbial balance.
cocoa husks; intestinal microbiota; pigs; polyphenols
Settore VET/01 - Anatomia degli Animali Domestici
Settore AGR/16 - Microbiologia Agraria
Settore AGR/18 - Nutrizione e Alimentazione Animale
Settore AGR/19 - Zootecnica Speciale
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/375040
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