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.

Related Articles


"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 January 30, 2015 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 January 30, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, January 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Oxfam Calls for Massive Aid for Ebola-Hit West Africa

Oxfam Calls for Massive Aid for Ebola-Hit West Africa

AFP (Jan. 29, 2015) Oxfam International has called for a multi-million dollar post-Ebola "Marshall Plan", with financial support given by wealthy countries, to help Guinea, Sierra Leone and Liberia to recover. Duration: 01:10 Video provided by AFP
Powered by NewsLook.com
Are We Winning The Fight Against Ebola?

Are We Winning The Fight Against Ebola?

Newsy (Jan. 29, 2015) The World Health Organization announced the fight against Ebola has entered its second phase as the number of cases per week has steadily dropped. Video provided by Newsy
Powered by NewsLook.com
Calif. Health Officials Campaign Against E-Cigarettes

Calif. Health Officials Campaign Against E-Cigarettes

Newsy (Jan. 29, 2015) The California Health Department says e-cigarettes are a public health risk for both smokers and those who inhale e-cig smoke secondhand. Video provided by Newsy
Powered by NewsLook.com
Measles Scare Sends 66 Calif. Students Home

Measles Scare Sends 66 Calif. Students Home

AP (Jan. 29, 2015) Officials say 66 students at a Southern California high school have been told to stay home through the end of next week because they may have been exposed to measles and are not vaccinated. (Jan. 29) Video provided by AP
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:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

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