Navigation Links
Swine researchers seek answers to fiber's low digestibility

As interest grows in feeding distillers dried grains with solubles (DDGS) to growing pigs, many questions are being asked about the digestibility of this alternative feed option.

"Previous research shows that while the amount of energy in DDGS is greater than that of corn, pigs have lower digestibility of energy in DDGS than in corn," said Hans H. Stein, U of I associate professor in the Department of Animal Sciences. "Our goal was to find out why."

Stein's team wanted to develop a greater understanding of the digestibility differences between DDGS and corn. He said the biggest difference between corn and DDGS is fiber content. Fiber contributes to the total energy in DDGS, but not much is known about how pigs utilize the fiber in DDGS.

"We want to find ways to improve the utilization of this energy source in a swine diet," he said. "But first we need to understand the role of fiber in DDGS."

Our research demonstrated that overall, the utilization of fiber in DDGS is low less than 50 percent. Fiber is characterized as soluble or insoluble fiber. The soluble fiber consists of pectins, some hemicelluloses and some oligosaccharides, Stein said.

"Soluble fiber will change the viscosity of the digesta in the intestinal tract while absorbing water and becoming easily fermentable in the intestinal tract," he added.

On the other hand, insoluble fiber will not dissolve in solution and is made up of the hardest part of the plant such as cellulose and lignin. These fibers do not change viscosity in the intestinal tract and they are the most difficult to ferment.

"Pigs utilize soluble fiber very well, almost 90 percent," Stein said. "Unfortunately, most of the fiber in DDGS is insoluble and has a much lower digestibility. This is the reason for the low digestibility of the combined fiber fraction in DDGS. However, if we can do anything to change the solubility of fiber and make it more soluble, we know we can increase the utilization of it."

From a practical standpoint, DDGS's higher insoluble fiber content means more undigested material goes straight into the manure, which in turn creates more manure management issues for producers.

"If there is a higher fiber content in the manure, it creates a thicker slurry which could lead to more solids in the pit," said Matthew Robert, U of I visiting research engineer in the Department of Agricultural and Biological Engineering. "This requires the pit to agitate the slurry for a longer period of time to get the solids moving so it can be pumped out. If more solids are left in the pit after it's pumped, it results in less storage for the future."

In addition, Stein's study also opened doors to new research methods.

"We know that fiber could be measured in many ways," Stein said. "One of the standard methods of measurement, Total Dietary Fiber (TDF), is very expensive. We found a less expensive procedure, Neutral Detergent Fiber (NDF), to be quite effective and very closely correlated to TDF."

In future research projects, this finding can help save money and make research dollars stretch further to help swine producers.

Stein's team is continuing to look for ways to increase the solubility of fiber and in turn, find new ways to require less feed to produce one pound of gain.


Contact: Jennifer Shike
University of Illinois College of Agricultural, Consumer and Environmental Sciences

Related biology news :

1. Study finds MRSA in Midwestern swine, workers
2. Avian flu research sheds light on swine flu outbreak
3. K-State researcher finds 1918 flu resulted in current lineage of H1N1 swine influenza viruses
4. Swine flu genes dissimilar to past pandemics
5. HudsonAlpha investigator develops rapid response swine flu test
6. Swine flu: What does it do to pigs?
7. Swine flu experts gather at New York Academy of Sciences May 28
8. Britains first swine-flu trials under way
9. World-first swine-flu vaccine trial reveals one dose provides strong immune response
10. Dung of the devil plant roots point to new swine flu drugs
11. First draft of the pig: Researchers sequence swine genome
Post Your Comments:
(Date:9/26/2015)... 26th, 2015  Results of a TactioRPM pilot ... today at the Stanford Medicine X Conference. In ... Dashboards, Connected Health Devices and Pharmacogenomics", Roger ... will explain how senior patients equipped with connected ... pharmacist via the TactioRPM remote patient monitoring platform ...
(Date:9/24/2015)... September 24, 2015 ... 2015 Kerv ( ... lanserar idag världens första kontaktlösa betalningsring på ... 77 000 GBP för massproduktion via crowdfunding.  ... ) , Kerv-bärare kan göra ...
(Date:9/10/2015)... -- Report Details Emerging Biological Drugs ... Revenue Prospects to Help You Stay Ahead ... drug classes? Get the latest technological and commercial ... data and industry knowledge, benefitting your influence. And ... sales predictions. Visiongain,s new study reveals what,s ...
Breaking Biology News(10 mins):
(Date:10/12/2015)... Oct. 12, 2015 This report covers the ... cell type, products, applications, end-user markets and geographic segmentation. ... The global cell expansion market generated revenue of ... reach revenues of $9.7 billion in 2015 and $22.0 ... (CAGR) of 17.8% from 2015 to 2020. This ...
(Date:10/12/2015)... , 12 de octubre de 2015 ... (D-CA) llegó a un récord en el congreso con ... anual de la International Plasma Awareness Week (IPAW), que ... IPAW está patrocinada por la Plasma Protein Therapeutics ... para: , Aumentar la concienciación mundial ...
(Date:10/12/2015)... 2015 LabStyle Innovations Corp. ... today announced its Medical Director, Dr. Moshe Kamar ... 5th EAI International Conference on Wireless Mobile Communication ... in mobile and wireless technologies," the conference will take ... October 14 - 16, 2015. The conference is endorsed ...
(Date:10/12/2015)... ... October 12, 2015 , ... Dr. ... Srinivasan, has joined the firm as a Premier Expert consultant. NDA Partners ... to bring extraordinary value to the company's clients. Premier Experts collaborate to ...
Breaking Biology Technology: