Navigation Links
Research sheds light on fat digestibility in pigs
Date:3/7/2011

Producers and feed companies add fat to swine diets to increase energy, but recent research from the University of Illinois suggests that measurements currently used for fat digestibility need to be updated.

"It's critical that we gain a better understanding of the energy value of fat," said Hans H. Stein, U of I professor in the Department of Animal Sciences. "If we don't know the true energy value of fat, we can't determine if it's economical to add to the diet."

In a recent experiment, Stein and his team of researchers studied how different types of diets affect endogenous losses of fat (fat excreted from pigs that did not originate from the diet). They measured endogenous losses of fat to determine the true digestibility of both intact and extracted corn oil. The intact corn oil was provided in the form of corn germ, and the extracted fat was provided as liquid corn oil.

Endogenous losses differed depending on the type of fat in the diet, he said. The intact fat was less digestible than extracted fat.

"We believe that the main reason intact fat is less digestible than extracted fat is that it is easy for the enzymes to gain access to the fat in corn oil. In contrast, the corn germ is encased in the feed ingredient among the fiber complexes, which makes it difficult for enzymes to access and digest it," Stein said.

His team also discovered that measuring fat digestibility at the end of the ileum results in a more accurate value than measuring the total tract digestibility of fat.

"The microbes in the hindgut can synthesize fat," Stein explained. "This fat is not absorbed in the hindgut; it's just excreted in the feces. Because of this, it's easy to underestimate the amount of fat that was absorbed in the small intestine by the pig."

Stein said this research has opened new doors for swine nutrition.

"We knew that the concentration of fat in the diet affects the value that is determined for apparent digestibility," Stein said. "However, by correcting these values for the endogenous losses, we can calculate the true digestibility of fat fed to pigs."

Results of the research indicate that more information on fat digestibility is needed to ensure that diets are formulated economically.

"We now know that fat digestibility should be determined as ileal digestibility rather than total tract digestibility to avoid the influence of the microbes in the hindgut of pigs," he said. "We also know that for practical feed formulation, it is more accurate to use values for true ileal digestibility than for apparent ileal digestibility because these values are not influenced by the level of fat in the diet."

However, Stein said we still don't know many of the factors that influence fat digestibility in different feed ingredients and we do not have good data for the true ileal digestibility of fat in most of our feed ingredients. A better understanding of how fat is utilized by the pig after absorption is also needed. Stein believes follow-up research should focus on addressing these questions and determining the energy value of the different sources of fat used in swine diets.


'/>"/>

Contact: Jennifer Shike
jshike@illinois.edu
217-244-0888
University of Illinois College of Agricultural, Consumer and Environmental Sciences
Source:Eurekalert

Related medicine news :

1. Aging in place preserves seniors independence, reduces care costs, MU researchers find
2. Elderly see pedestrians half as often as younger drivers, according to Ben-Gurion U. researchers
3. Researchers use human cues to improve computer user-friendliness
4. Vital funding for childrens brain tumor research
5. Research Uncovers Clue to SIDS
6. ATS issues report recommending research priorities in treatment of sleep apnea
7. Scripps Research study points to liver, not brain, as origin of Alzheimers plaques
8. Researchers find new mechanism behind the formation and maintenance of long-term memories
9. Researchers pinpoint genetic pathways involved in breast cancer
10. Queens develops new brain training app for research into aging minds
11. Australia Fellowship gives $4 million boost to cancer origin research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/11/2016)... ... February 11, 2016 , ... Be Well Medical ... in the heart of Old Town at 108 South Columbus St, Suite 201, Alexandria, ... highest level of medical care in the convenience of their homes, offices or at ...
(Date:2/11/2016)... Southborough, MA (PRWEB) , ... February 11, 2016 , ... ... avoid overpaying for IT services, what questions to ask your IT consultant before signing ... them access to your computer network. , “With companies relying heavily on e-mail and ...
(Date:2/10/2016)... (PRWEB) , ... February 10, 2016 , ... ... practitioner, is known locally for a series of therapeutic sessions to help Los ... their characters and in their lives. The series, known as “Mindfulness for Actors ...
(Date:2/10/2016)... ... February 10, 2016 , ... MetLoop CEO Jay Southerland announced ... at the International Roofing Expo in Orlando, Florida on February 17-19. , With ... weather technology in the hands of consumers, roofing contractors, manufacturers and distributors,” Southerland ...
(Date:2/10/2016)... TX (PRWEB) , ... February 10, 2016 , ... ... commencement of a master charity program created to assist the local community. Pledging ... with community leaders and nonprofit organizations in the area. Their goal is to ...
Breaking Medicine News(10 mins):
(Date:2/11/2016)... , Feb. 11, 2016  Galmed Pharmaceuticals Ltd. (Nasdaq: ... on the development of a once-daily, oral therapy for ... Chief Medical Officer, Dr. Maya Halpern , has notified ... Chief Medical Officer and from its Board of Directors ... reaching retirement age. Allen Baharaff . Mr. ...
(Date:2/11/2016)... February 11, 2016 North America ... published by MarketsandMarkets, The global market is expected to reach USD ... at a CAGR of 10.2%. --> North America ... 2020", published by MarketsandMarkets, The global market is expected to reach ... growing at a CAGR of 10.2%. --> According to ...
(Date:2/10/2016)... February 11, 2016 ... the "Molecular Diagnostics Reports Bundle" ... http://www.researchandmarkets.com/research/rp4pg8/molecular ) has announced the addition of ... report to their offering. --> ... announced the addition of the "Molecular ...
Breaking Medicine Technology: