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Chicory (Cichorium intybus L) as fibre source in pig diets

effects on digestibility, gut microbiota and performance

Ivarsson, Emma (2012). Chicory (Cichorium intybus L) as fibre source in pig diets. Diss. (sammanfattning/summary) Uppsala, Sweden : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2012:19
ISBN 978-91-576-7655-9
[Doctoral thesis]

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The aim of this thesis was to increase our understanding about chicory (forage and root) as fibre source for pigs, by studying the effects of diets with inclusion of chicory on digestibility, digestion site, performance, gut microbiota and environment.
In total 62 pigs were used, including newly weaned and growing intact pigs and growing post valve t-caecum (PVTC)-cannulated pigs. The weaned pigs were fed cereal-based diets with inclusion of 40, 80 and 160 g/kg of either chicory or ribwort forage. The growing pigs were fed cereal-based diets with inclusion of 80 and 160 g/kg of chicory forage and/or root. The cannulated pigs were fed diets with similar non-starch polysaccharides (NSP) content, comprising of a basal diet and four diets with one of four fibre sources, two pectin-rich (chicory forage and sugar beet pulp), and two arabinoxylan-rich (wheat bran and grass meal).
The results showed that the total tract digestibility of organic matter (OM) and energy of chicory forage was similar to commonly used forage crops. The total tract digestibility of NSP in both chicory forage and root was higher than the NSP digestibility in cereals. Inclusion of 80 g chicory forage/kg did not reduce the digestibility of OM, crude protein and energy. Inclusion of 160 g chicory forage/kg did not reduce growth performance and did not increase gastrointestinal organ weights. Chicory forage and root affected the gut microbiota differently with higher lactobacilli:coliform ratio when combined in the diet which indicates a synergistic effect. Chicory forage increased the abundance of Bacteroides-Prevotella-Porphyromonas in faeces. Increased total amount of fermentable dietary fibre in the diet increased the abundance of the same groups in ileal digesta.
The effects of different fibre sources on the microbiota were to a high degree ingredient-specific. The effect on organic acids was NSP-structure specific with increased butyric acid concentration on arabinoxylan-rich diets. The effect of pectin-rich diets was dependent on the intra-molecular structure of pectin, with highest proportion of acetic acid on chicory forage diet.
In conclusion, these studies shows that there is potential for both chicory forage and root to be used as regular feed ingredients in pig diets.

Authors/Creators:Ivarsson, Emma
Title:Chicory (Cichorium intybus L) as fibre source in pig diets
Subtitle:effects on digestibility, gut microbiota and performance
Alternative abstract:
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2012
Number of Pages:70
I.Ivarsson, E., Frankow-Lindberg, B., Andersson, H.K. and Lindberg, J.E. (2011). Growth performance, digestibility and faecal coliform bacteria in weaned piglets fed a cereal-based diet including either chicory (Cichorium intubys L.) or ribwort (Plantago Lanceolata L.) forage. Animal 5 (4), 558-564.
II.Ivarsson, E., Liu, H.Y., Dicksved, J., Roos, S. and Lindberg, J.E. (2012). Impact of chicory inclusion in a cereal-based diet on digestibility, organ size and faecal microbiota in growing pigs. Animal doi:10.1017/S1751731111002709.
III.Ivarsson, E., Andersson, R. and Lindberg J.E. (2012). Digestibility of fibre sources and molecular weight distribution of fibre fractions in ileal digesta of growing pigs (submitted).
IV.Ivarsson, E., Roos, S. and Lindberg J.E. (2012). Fermentable dietary fibre increases the abundance of Bacteroides-Prevotella-Porphyromonas in ileal digesta of growing pigs (manuscript). Paper I-II are reproduced with the kind permission of the publishers.
Place of Publication:Uppsala, Sweden
Publisher:Insitutionen för husdjurens utfodring och vård, Sveriges lantbruksuniversitet
ISBN for printed version:978-91-576-7655-9
Additional Information:Emma.Ivarsson@slu.se
Publication Type:Doctoral thesis
Full Text Status:Public
Subjects:Obsolete subject words > VETERINARY MEDICINE > Physiology and nutrition
Obsolete subject words > NATURAL SCIENCES > Biology > Cell and molecular biology > Molecular biology
Agrovoc terms:swine, dietary fibres, growth, digestibility, microbial flora, organic acids, animal performance, sweden
Keywords:chicory, dietary fibre, growing pig, digestibility, gut microbiota, pectin arabinoxylan, organic acids, molecular weight distribution, performance
Permanent URL:
ID Code:8693
Department:(VH) > Dept. of Animal Nutrition and Management
External funders:FORMAS
Deposited By: Emma Ivarsson
Deposited On:16 Apr 2012 11:06
Metadata Last Modified:02 Dec 2014 10:49

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