Editor's Note
The current issue of the newsletter contains the following:
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Two research reports: one on the effect on pork fat quality of adding saturated fats to DDGS-based diets; and one on amino acid digestibility in Dried Fermentation Biomass, Peptone 50, and PEP2+. -
Two new podcasts: one on adding saturated fats to DDGS-based diets; and one on digestibility of amino acids in corn, corn co-products, and bakery meal. -
A new publication from the Stein Monogastric Nutrition Laboratory.
I hope you will find this information useful. To subscribe to the newsletter, please visit http://nutrition.ansci.illinois.edu/newsletter.
Sincerely,
Hans H Stein
Research Reports
Distillers dried grains with solubles (DDGS) can be fed in swine diets at an inclusion rate of up to 30% without negatively affecting pig growth performance. However, DDGS contains high levels of polyunsaturated fatty acids (PUFA), which may promote deposition of unsaturated dietary fatty acids in adipose tissue. Consequently, inclusion of DDGS at more than 20% has been shown to result in increased fat iodine values (IV) and soft belly production. The disadvantages of this decrease in fat quality include reduced shelf life, increased susceptibility to oxidative damage, and reduced belly sliceability.
An experiment was performed to determine if the addition of different sources of saturated fat would improve belly fat quality in pigs fed a DDGS-based diet. In addition, the hypothesis that the iodine value product (IVP) of the diet can be used to predict backfat IV and belly fat IV of pigs fed diets containing DDGS was tested.
Amino acid digestibility in Dried Fermentation Biomass, Peptone 50, and PEP2+ fed to weanling pigs
Dried Fermentation Biomass (Ajinomoto Heartland LLC) is a co-product of the commercial production of lysine. Peptone 50 and PEP2+ (TechMix LLC) are co-products of heparin production by the human pharmaceutical industry. The latter two are produced from hydrolyzed pig intestines co-dried with a vegetable protein (Peptone 50) or enzymatically processed vegetable proteins (PEP2+). These co-products are being investigated as possible cost-effective replacements for fish meal in weanling pig diets.
An experiment was performed to measure the apparent and standardized ileal digestibility of CP and amino acids by weanling pigs in Dried Fermentation Biomass, Peptone 50, and PEP2+, respectively, and to compare these values to digestibility values obtained in fish meal.
New podcasts
July 27: Adding saturated fats to DDGS-based diets: Effects on growth performance and carcass characteristics
Jung Wook Lee, master's student in the Stein Monogastric Nutrition Lab, follows up on his research into the effects of added tallow, palm kernel oil, corn germ, and glycerol on growth performance and carcass characteristics of pigs fed DDGS-based diets. Lee also discusses whether dietary IVP values may be used to predict backfat IV and belly fat IV of pigs fed diets containing DDGS. Adapted from a presentation at the 2011 ADSA-ASAS Joint National Meeting, New Orleans, LA, July 10-14, 2011.
July 29: Digestibility of amino acids in corn, corn co-products, and bakery meal fed to growing pigs
Ferdinando Almeida, Ph. D. student in the Stein Monogastric Nutrition Lab, discusses the results of an experiment to measure the apparent (AID) and standardized (SID) ileal digestibility of crude protein and amino acids in corn gluten meal, corn gluten feed, corn germ meal, hominy feed, and bakery meal in growing pigs and to compare these values to the values observed for DDGS and corn.
Publication
Stein, H. H. 2011. Feeding distillers dried grains with solubles (DDGS) and other ethanol coproducts to swine. Pages 297-316 in K. Liu and K. Rosentrater (eds): Distiller’s Grains: Production, Properties and Utilization. CRC Press, Tailor and Francis Group, Boca Raton, FL.