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Stein Nutrition Newsletter, November 2015
November 2015

Welcome

Welcome to the Stein Nutrition Newsletter! In this issue, you will find some of the work our lab has produced in the previous month. For more information, please visit our website at http://nutrition.ansci.illinois.edu.

Stein Lab scholar wins award

Neil Jaworski, Ph. D. candidate in the Stein Monogastric Nutrition Laboratory at the University of Illinois, received an award from the Nutrition Commission of the European Federation of Animal Science for "Best Oral Presentation" at the 2015 EAAP conference in Warsaw, Poland. His presentation was titled "Nonstarch polysaccharide composition influences the energy value of grains and co-products."

Research report: Digestible and metabolizable energy in a novel source of soy protein concentrate and in soybean meal fed to weanling pigs

Soybean meal is the main protein source used in diets for pigs in the United States, as well as most countries of the world, due to the high quality of the protein it provides. However, soybean meal also contains antinutritional factors that limit its use in weanling pig diets. Pigs do not secrete the enzyme needed for the hydrolysis of raffinose and stachyose, α-galactosidase, in the small intestine. Therefore, these oligosaccharides are not enzymatically digested, but are instead fermented in the small and large intestines. This results in decreased growth performance and increased incidence of diarrhea when fed to weanling pigs.

Oligosaccharides can be removed from soybean meal using an alcohol extraction process, creating soy protein concentrate. Soy protein concentrate has greater digestibility of most amino acids and greater concentrations of digestible energy (DE) and metabolizable energy (ME) than soybean meal. A new source of soy protein concentrate called Nutrivance (Midwest Ag Enterprises Inc., Marshall, MN) has recently been introduced, which is produced using a process combining non-alcohol extraction and enzymatic treatment of soybean meal. The nutritional value of soy protein concentrate produced using this method has not been determined. Therefore, an experiment was conducted to determine the concentrations of DE and ME in soy protein concentrate and to compare these values to DE and ME in soybean meal.

(Read more ...)

Podcast: Effect of a 3-strain Bacillus-based direct-fed microbial on growth performance and volatile fatty acid production in nursery pigs fed low or high fiber diets

Neil Jaworski, a Ph. D. student in the Stein Monogastric Nutrition Laboratory, presents his research on the use of a fiber-degrading feed additive in low fiber (corn-soybean meal) or high fiber (corn-soybean meal-DDGS-wheat middlings) diets fed to nursery pigs. Jaworski studied the effects on growth performance and volatile fatty acid production. Adapted from a presentation at the 2015 ASDA-ASAS-CSAS Joint Annual Meeting, Orlando, Florida, July 12-16.

(Watch or download)

Press release: Grinding corn to a smaller particle size can improve its nutritional value

URBANA, Ill. –  Current recommendations for feeding corn to pigs state that the grain should be milled to an average
 particle size of 640–650 μm. However, results of research at the University of Illinois indicate that milling to a smaller particle size may increase the digestibility of starch and energy in corn, and therefore, improve the nutritional value of corn.

"Feed ground to a smaller particle size has more surface area than coarser ground feed, which provides more access for digestive enzymes to work," said Dr. Hans H. Stein, professor of animal sciences at Illinois. "Therefore, we would expect nutrients in finely-ground feed to be better digested by pigs than nutrients in coarsely-ground feed."


(Read more ...)

New publications from the Stein Monogastric Nutrition Laboratory

González-Vega, J. C., C. L. Walk, and H. H. Stein. 2015. Digestible calcium requirements for 25 to 50 kg pigs. Memorias XVII Congreso Bienal AMENA. Puerto Vallarta, Jal. Mexico.

Rojas, O. J. and H. H. Stein. 2015. Effects of reducing the particle size of corn grain on the concentration of digestible and metabolizable energy and on the digestibility of energy and nutrients in corn grain fed to growing pigs. Livest. Sci. 181:187-193.

Li, Z., X. Wang, P. Guo, L. Liu, X. Piao, H. H. Stein, D. Li, and C. Lai. 2015. Prediction of digestible and metabolisable energy in soybean meals produced from soybeans of different origins fed to growing pigs. Arch. Anim. Nutr. 69:473-486.

In This Issue

• Research report: Digestible and metabolizable energy in a novel source of soy protein concentrate and in soybean meal fed to weanling pigs
• Podcast: Effect of a 3-strain Bacillus-based direct-fed microbial on growth performance and volatile fatty acid production in nursery pigs fed low or high fiber diets
• Press release: Grinding corn to a smaller particle size can improve its nutritional value
• New publications from the Stein Monogastric Nutrition Laboratory

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