A recent paper published in the Journal of Animal Science suggests producers may want to adjust pig diets when including distillers dried grains with solubles (DDGS). Some producers believe that feeding pigs saturated fats will undo the fat-softening effects of DDGS. Firmer fat means longer-lasting pork.
But researchers from the University of Illinois found that including saturated fats in DDGS diets makes no difference in fat quality.
The researchers formulated six corn-soybean meal diets to test the effects of saturated fat additives on carcass fat quality in pigs. Five of these diets contained DDGS.
According to the researchers, pork produced from pigs fed DDGS have reduced shelf life and increased susceptibility to oxidative damage. Oxidative damage affects texture, color, juiciness and the overall flavor of pork products.
"Distillers dried grains contain unsaturated fatty acids and those fatty acids are deposited into the fat of the animal," said Hans-Henrik Stein, study co-author and Department of Animal Science professor at the University of Illinois. "From a health standpoint, that's a good thing, but it can be a problem when producing pork products like bacon."
According to Stein, high levels of unsaturated fats make pork belly fat too soft to slice for bacon. To counteract this problem, producers have included saturated fats such as corn germ, beef tallow, palm kernel oil and glycerol in diets containing DDGS in order to make the fat firmer.
For this study, corn germ, beef tallow, palm kernel oil and glycerol were each added to a diet containing DDGS. The researchers compared the performance of pigs fed each of these diets to the performance of pigs fed a diet containing DDGS with no saturated fats added and a control diet containing corn-soybean meal but no DDGS.
Firmness of fat was tested by measuring the distance of "belly flop." This was done by draping the belly of the carcasses over a metal rod with the skin facing down. Ten centimeters below the rod, distance was measured between the two sides. The larger the distance was, the firmer the fat.
The researchers found that pigs fed the control diet containing no DDGS had greater belly flop distances than the pigs fed the other diets. There was no difference among the pigs fed the five diets containing DDGS.
This led researchers to conclude that adding saturated fats to diets containing DDGS has no effect on the fat quality of pigs.
Stein suggested that producers feeding high levels of DDGS reduce the amount fed in the last 3 to 4 weeks before harvest to avoid the softening of fat.
This paper is titled "Carcass fat quality of pigs is not improved by adding corn germ, beef tallow, palm kernal oil, or glycerol to finishing diets containing distillers dried grains with solubles (DDGS)." It can be read in full at http://journalofanimalscience.org/.
Media contact:Samantha Walker
Madeline McCurry-Schmidt | EurekAlert!
Ammonium nitrogen input increases the synthesis of anticarcinogenic compounds in broccoli
26.04.2017 | University of the Basque Country
New data unearths pesticide peril in beehives
21.04.2017 | Cornell University
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
28.04.2017 | Event News
20.04.2017 | Event News
18.04.2017 | Event News
28.04.2017 | Medical Engineering
28.04.2017 | Earth Sciences
28.04.2017 | Life Sciences