Impact of Citrus Pulp or Inulin on Intestinal Microbiota and Metabolites, Barrier, and Immune Function of Weaned Piglets
We investigated the use of citrus pulp (CP) as a novel prebiotic capable of exerting microbiota and immunomodulating capacities to alleviate weaning stress. Inulin (IN), a well-known prebiotic, was used for comparison. Hundred and 28 male weaned piglets of 21 days old were assigned to 32 pens of 4 p...
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Frontiers Media S.A.
2021
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oai:doaj.org-article:48a696f5a0e64a33bc234deac3e5cf8b2021-12-03T14:30:17ZImpact of Citrus Pulp or Inulin on Intestinal Microbiota and Metabolites, Barrier, and Immune Function of Weaned Piglets2296-861X10.3389/fnut.2021.650211https://doaj.org/article/48a696f5a0e64a33bc234deac3e5cf8b2021-12-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fnut.2021.650211/fullhttps://doaj.org/toc/2296-861XWe investigated the use of citrus pulp (CP) as a novel prebiotic capable of exerting microbiota and immunomodulating capacities to alleviate weaning stress. Inulin (IN), a well-known prebiotic, was used for comparison. Hundred and 28 male weaned piglets of 21 days old were assigned to 32 pens of 4 piglets each. Piglets were assigned to one of the four treatments, i.e., control, IN supplemented at 0.2% (IN0.2%), and CP supplemented either at 0.2% (CP0.2%) or at 2% (CP2%). On d10–11 and d31–32 post-weaning, one pig per pen was euthanized for intestinal sampling to evaluate the growth performance, chyme characteristics, small intestinal morphology, colonic inflammatory response and barrier integrity, metabolite profiles [gas chromatography-mass spectrometry (GC-MS), and liquid chromatography-mass spectrometry (LC-MS)], and microbial populations. The IN treatment and the two CP treatments induced higher small intestinal villus height to crypt depth ratios in comparison with the control diet at both sampling times. All treatments decreased acidic goblet cell absolute counts in the crypts in comparison to the control diet of the duodenum on d10–11 and d31–32. The gene expression of β-defensin 2 was downregulated in colonic tissues following the IN and CP2% inclusion on d31–32. On d31–32, piglets fed with IN and CP0.2% showed lower mRNA levels of occludin and claudin-3, respectively. Not surprisingly, flavonoids were observed in the colon in the CP treatments. Increased colonic acetate proportions on d10–11, at the expense of branched-chain fatty acid (BCFA) levels, were observed following the CP2% supplementation compared to the control diet, inferring a reduction of proteolytic fermentation in the hindgut. The beneficial microbial community Faecalibacterium spp. was promoted in the colon of piglets fed with CP2% on d10–11 (p = 0.04; false discovery rate (FDR) non-significant) and on d31–32 (p = 0.03; FDR non-significant) in comparison with the control diet. Additionally, on d31–32, CP2% increased the relative abundance of Megasphaera spp. compared to control values (p = 0.03; FDR non-significant). In conclusion, CP2% promoted the growth of beneficial bacterial communities in both post-weaning time points, modulating colonic fermentation patterns in the colon. The effects of CP supplementation were similar to those of IN and showed the potential as a beneficial feed supplement to alleviate weaning stress.Julie UerlingsJulie UerlingsEster Arévalo SuredaMartine SchroyenKikianne KroeskeKikianne KroeskeSofie TangheMaartje De VosGeert BruggemanJosé WavreilleJérôme BindelleGiorgia PurcaroNadia EveraertNadia EveraertFrontiers Media S.A.articlecitrus pulpinulinintestinal healthinflammationbarrier functiongut morphologyNutrition. Foods and food supplyTX341-641ENFrontiers in Nutrition, Vol 8 (2021) |
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| topic |
citrus pulp inulin intestinal health inflammation barrier function gut morphology Nutrition. Foods and food supply TX341-641 |
| spellingShingle |
citrus pulp inulin intestinal health inflammation barrier function gut morphology Nutrition. Foods and food supply TX341-641 Julie Uerlings Julie Uerlings Ester Arévalo Sureda Martine Schroyen Kikianne Kroeske Kikianne Kroeske Sofie Tanghe Maartje De Vos Geert Bruggeman José Wavreille Jérôme Bindelle Giorgia Purcaro Nadia Everaert Nadia Everaert Impact of Citrus Pulp or Inulin on Intestinal Microbiota and Metabolites, Barrier, and Immune Function of Weaned Piglets |
| description |
We investigated the use of citrus pulp (CP) as a novel prebiotic capable of exerting microbiota and immunomodulating capacities to alleviate weaning stress. Inulin (IN), a well-known prebiotic, was used for comparison. Hundred and 28 male weaned piglets of 21 days old were assigned to 32 pens of 4 piglets each. Piglets were assigned to one of the four treatments, i.e., control, IN supplemented at 0.2% (IN0.2%), and CP supplemented either at 0.2% (CP0.2%) or at 2% (CP2%). On d10–11 and d31–32 post-weaning, one pig per pen was euthanized for intestinal sampling to evaluate the growth performance, chyme characteristics, small intestinal morphology, colonic inflammatory response and barrier integrity, metabolite profiles [gas chromatography-mass spectrometry (GC-MS), and liquid chromatography-mass spectrometry (LC-MS)], and microbial populations. The IN treatment and the two CP treatments induced higher small intestinal villus height to crypt depth ratios in comparison with the control diet at both sampling times. All treatments decreased acidic goblet cell absolute counts in the crypts in comparison to the control diet of the duodenum on d10–11 and d31–32. The gene expression of β-defensin 2 was downregulated in colonic tissues following the IN and CP2% inclusion on d31–32. On d31–32, piglets fed with IN and CP0.2% showed lower mRNA levels of occludin and claudin-3, respectively. Not surprisingly, flavonoids were observed in the colon in the CP treatments. Increased colonic acetate proportions on d10–11, at the expense of branched-chain fatty acid (BCFA) levels, were observed following the CP2% supplementation compared to the control diet, inferring a reduction of proteolytic fermentation in the hindgut. The beneficial microbial community Faecalibacterium spp. was promoted in the colon of piglets fed with CP2% on d10–11 (p = 0.04; false discovery rate (FDR) non-significant) and on d31–32 (p = 0.03; FDR non-significant) in comparison with the control diet. Additionally, on d31–32, CP2% increased the relative abundance of Megasphaera spp. compared to control values (p = 0.03; FDR non-significant). In conclusion, CP2% promoted the growth of beneficial bacterial communities in both post-weaning time points, modulating colonic fermentation patterns in the colon. The effects of CP supplementation were similar to those of IN and showed the potential as a beneficial feed supplement to alleviate weaning stress. |
| format |
article |
| author |
Julie Uerlings Julie Uerlings Ester Arévalo Sureda Martine Schroyen Kikianne Kroeske Kikianne Kroeske Sofie Tanghe Maartje De Vos Geert Bruggeman José Wavreille Jérôme Bindelle Giorgia Purcaro Nadia Everaert Nadia Everaert |
| author_facet |
Julie Uerlings Julie Uerlings Ester Arévalo Sureda Martine Schroyen Kikianne Kroeske Kikianne Kroeske Sofie Tanghe Maartje De Vos Geert Bruggeman José Wavreille Jérôme Bindelle Giorgia Purcaro Nadia Everaert Nadia Everaert |
| author_sort |
Julie Uerlings |
| title |
Impact of Citrus Pulp or Inulin on Intestinal Microbiota and Metabolites, Barrier, and Immune Function of Weaned Piglets |
| title_short |
Impact of Citrus Pulp or Inulin on Intestinal Microbiota and Metabolites, Barrier, and Immune Function of Weaned Piglets |
| title_full |
Impact of Citrus Pulp or Inulin on Intestinal Microbiota and Metabolites, Barrier, and Immune Function of Weaned Piglets |
| title_fullStr |
Impact of Citrus Pulp or Inulin on Intestinal Microbiota and Metabolites, Barrier, and Immune Function of Weaned Piglets |
| title_full_unstemmed |
Impact of Citrus Pulp or Inulin on Intestinal Microbiota and Metabolites, Barrier, and Immune Function of Weaned Piglets |
| title_sort |
impact of citrus pulp or inulin on intestinal microbiota and metabolites, barrier, and immune function of weaned piglets |
| publisher |
Frontiers Media S.A. |
| publishDate |
2021 |
| url |
https://doaj.org/article/48a696f5a0e64a33bc234deac3e5cf8b |
| work_keys_str_mv |
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