Navigation Links
Using lysine estimates to detect heat damage in DDGS
Date:1/14/2013

URBANA Distillers dried grains with solubles (DDGS) are a good source of energy and protein in swine diets. However, they can be damaged by excessive heat during processing, compromising their nutritional value. University of Illinois researchers have found that it is possible to assess heat damage by predicting the digestibility of lysine in DDGS.

Excessive heat causes some of the lysine in DDGS to bond with sugars and form Amadori compounds. The lysine bound in these compounds is called unreactive lysine; pigs cannot digest it. Lysine that is not bound is referred to as reactive lysine; pigs can use it for protein synthesis.

"Some sources of DDGS are heat damaged. And, therefore, the digestibility of the lysine in particular is poor," said animal sciences professor Hans Stein. "If you know up front that a particular source is heat damaged, then you can add synthetic lysine to compensate. But the question is, how do you know whether or not a specific source is heat damaged?"

To answer this question, Stein and his team predicted the digestibility of lysine in 21 samples of corn DDGS based on several different methods of analysis: total crude protein concentration, total analyzed lysine concentration, reactive lysine concentration as determined using the furosine procedure, and lysine to crude protein ratio.

After making the predictions, they determined ileal lysine digestibility in the 21 samples using cannulated pigs and compared the predicted values for lysine digestibility with results obtained in the animals. Results indicated that the concentration of analyzed lysine in the sample was a good predictor of lysine digestibility (r2 = 0.849), but using the concentration of reactive lysine rather than the concentration of analyzed lysine improved the prediction accuracy (r2 = 0.898). Using the lysine to crude protein ratio as a second independent variable in the regression equation improved the predictions. Researchers could not accurately predict lysine digestibility using the concentration of crude protein alone.

"The practical outcome of this is that you can't analyze only for crude protein. You will need to have some kind of an estimate of lysine or furosine to know if your source of DDGS is heat damaged," Stein said. "However, if the concentration of lysine or furosine in a given source of DDGS is known, the digestibility of lysine can be predicted fairly accurately."


'/>"/>

Contact: Susan Jongeneel
sjongene@illinois.edu
217-333-3291
University of Illinois College of Agricultural, Consumer and Environmental Sciences
Source:Eurekalert

Related medicine news :

1. ZijaExtreme.com Researches Vitamin D Deficiency & Using a More Natural Approach
2. US Drug Watchdog Now Urges Family Members Mourning The Loss Of A Loved One Who Developed Bladder Cancer After Using The Diabetes Drug Actos To Call The Johnson Law Group
3. McGill University Launches a Major New Study on HPV Prevention Using Divine 9 Personal Lubricants with Carragel
4. BioPharm Systems to Host Webinar on Using iHelp in Oracle’s Siebel Clinical Trial Management System
5. MD247 Spreads Word of Telemedicine Using Social Media
6. Bestselling Author Hellen Chen Talked About the Pitfalls of Dating and What is Causing Marriages to Fail in Recent Workshops
7. Penn team developing new class of malaria drugs using essential calcium enzyme
8. Some Kids Abusing Common Baking Ingredients
9. Princeton Ivy Capital Advisors has Addressed "Fiscal Cliff Fears" by Using Long Term Strategy for its Investors
10. Dr. Farshchian: Rotator Cuff Injuries are being Treated Now Using Cell Therapy at the Center for Regenerative Medicine
11. HeroClix, a Fun App using Comic Book Characters, was Recently Featured on the AppWatch Segment of NewsWatch
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... ... 2016 , ... Quality metrics are proliferating in cancer care, and are derived ... eye of the beholder, according to experts who offered insights and commentary in the ... Care. For the full issue, click here . , For the American Society ...
(Date:6/26/2016)... ... June 26, 2016 , ... PawPaws brand pet supplements ... was developed to enhance the health of felines. The formula is all-natural and is ... herbs in the PawPaws Cat Kidney Support Supplement Soft Chews are Astragalus ...
(Date:6/25/2016)... ... June 25, 2016 , ... Experts from the American ... Annual Research Meeting June 26-28, 2016, at the Hynes Convention Center in Boston. ... including advance care planning, healthcare costs and patient and family engagement. , AIR ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand gesture ... said Christina Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s package ... Final Cut Pro X . Simply select a ProHand generator and drag it ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... recover from injury. Recently, he has implemented orthobiologic procedures as a method for ... is one of the first doctors to perform the treatment. Orthobiologics are substances ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... June 23, 2016 Roche (SIX: RO, ROG; ... for its Elecsys BRAHMS PCT (procalcitonin) assay as a ... septic shock. With this clearance, Roche is the first ... integrated solution for sepsis risk assessment and management. ... infection and PCT levels in blood can aid clinicians ...
(Date:6/23/2016)... Capricor Therapeutics, Inc. ... company focused on the discovery, development and commercialization ... in its ongoing randomized HOPE-Duchenne clinical trial (Halt ... its 24-patient target. Capricor expects the trial to ... 2016, and to report top line data from ...
(Date:6/23/2016)... -- Bracket , a leading clinical trial technology and ... platform, Bracket eCOA (SM) 6.0, at the 52 nd ... 2016 in Philadelphia , Pennsylvania.  A demonstration ... of its kind to fully integrate with RTSM, will be ... is a flexible platform for electronic clinical outcomes assessments that ...
Breaking Medicine Technology: