Featured Research

from universities, journals, and other organizations

Changing pigs' diets alters the gut microbiota

Date:
June 19, 2012
Source:
American Society for Microbiology
Summary:
Including chicory in cereal-based diets of pigs results in profound changes in gut micro-environment, morphology, and microbial population of pigs, according to a new article.

Including chicory in cereal-based diets of pigs results in profound changes in gut micro-environment, morphology, and microbial population of pigs, according to a study in the June 2012 Applied and Environmental Microbiology. Some of these changes were health-promoting, says principal investigator Jan Erik Lindberg of the Swedish University of Agricultural Sciences, Uppsala.

"Certain types of substrates, such as dietary fiber, escape digestion in the foregut and reach the hindgut of humans and mono-gastric animals, and are becoming important in applied nutrition," says Lindberg. These substrates, called "prebiotics," can alter gut bacterial composition, modify intestinal fermentation processes, promote gut development, and possibly improve health.

The changes were similar in the small and large intestines, but they differed for chicory forage and chicory root, says Lindberg. They also differed for both chicory forage and root as compared to the control diet, in potentially important ways, according to the report. For example, a lactic acid bacterium, Lactobacillus johnsonii, is involved in regulating production of the immune compound interleukin-12, while Lactobacillus mucosae is reported to possess probiotic mucus-binding ability. Both lactobacilli were dominant when chicory was included in the diet.

Additionally, the presence of chicory forage in the feed boosted the numbers of bacteria that produce butyrate, a key substrate for the epithelial cells that line the colon, as well as a signaling molecule for the gut immune system, says Lindberg. The major butyrate-producing bacteria were Faecalibacterium prausnitzii, Eubacterium rectale, and Roseburia sp. As their numbers rose, those of Prevotella spp.declined.

Prevotella are strictly anaerobic bacteria that have been identified as a dominant species in the large intestine of pigs, and are also abundant in the ileum. Additionally, they were found (by other researchers) to be dominant in the gut microbiota of rural African children living largely on millet grain, sorghum, legumes, and vegetables.

Pigs fed chicory roots contained copious Megashaera elsdenii, a bacterium which is abundant in the colon of pigs fed a diet designed to prevent swine dysentery.

The research originated in the search for prebiotic fiber sources, says Lindberg. "In this context, chicory was a good candidate as both the root and the above-ground biomass, the forage, can be eaten by animals and humans. We knew that there are many members of the chicory family that we regularly eat in salad."

"Prebiotic dietary effects can be used to minimize the occurrence of enteric disease, thereby reducing the need to use antimicrobials," says Lindberg. "This will improve animal productivity and welfare, and will also minimize the occurrence of contaminated products that can pose threats in the human food chain." Lindberg also says that he would expect a similar response to these dietary changes in humans.


Story Source:

The above story is based on materials provided by American Society for Microbiology. Note: Materials may be edited for content and length.


Journal Reference:

  1. H. Liu, E. Ivarsson, J. Dicksved, T. Lundh, J. E. Lindberg. Inclusion of Chicory (Cichorium intybus L.) in Pigs' Diets Affects the Intestinal Microenvironment and the Gut Microbiota. Applied and Environmental Microbiology, 2012; 78 (12): 4102 DOI: 10.1128/AEM.07702-11

Cite This Page:

American Society for Microbiology. "Changing pigs' diets alters the gut microbiota." ScienceDaily. ScienceDaily, 19 June 2012. <www.sciencedaily.com/releases/2012/06/120619123759.htm>.
American Society for Microbiology. (2012, June 19). Changing pigs' diets alters the gut microbiota. ScienceDaily. Retrieved August 2, 2014 from www.sciencedaily.com/releases/2012/06/120619123759.htm
American Society for Microbiology. "Changing pigs' diets alters the gut microbiota." ScienceDaily. www.sciencedaily.com/releases/2012/06/120619123759.htm (accessed August 2, 2014).

Share This




More Health & Medicine News

Saturday, August 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Texas Quintuplets Head Home

Texas Quintuplets Head Home

Reuters - US Online Video (Aug. 1, 2014) After four months in the hospital, the first quintuplets to be born at Baylor University Medical Center head home. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Ebola Patient Coming to U.S. for Treatment

Ebola Patient Coming to U.S. for Treatment

Reuters - US Online Video (Aug. 1, 2014) A U.S. aid worker infected with Ebola while working in West Africa will be treated in a high security ward at Emory University in Atlanta. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Ebola Vaccine Might Be Coming, But Where's It Been?

Ebola Vaccine Might Be Coming, But Where's It Been?

Newsy (Aug. 1, 2014) Health officials are working to fast-track a vaccine — the West-African Ebola outbreak has killed more than 700. But why didn't we already have one? Video provided by Newsy
Powered by NewsLook.com
Study Links Certain Birth Control Pills To Breast Cancer

Study Links Certain Birth Control Pills To Breast Cancer

Newsy (Aug. 1, 2014) Previous studies have made the link between birth control and breast cancer, but the latest makes the link to high-estrogen oral contraceptives. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins