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Stein Nutrition Newsletter, May 2016
May 2016

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.

In This Issue

• Research report: Digestibility of energy and concentratons of DE and ME in soy protein concentrate with different particle sizes fed to weanling pigs
• Podcast: Effects of fiber, a direct-fed microbial, and feeding duration on digestibility of energy and nutrients by pigs
• Podcast: Effect of fat sources on ATTD of minerals
• Press release: Addition of microbial xylanase to diets containing rice bran increases energy value for pigs
• New publications from the Stein Monogastric Nutrition Laboratory

Research report: Digestibility of energy and concentrations of DE and ME in soy protein concentrate with different particle sizes fed to weanling pigs

Soy protein concentrate is produced by aqueous ethanol extraction of water-soluble carbohydrates from soybean meal, followed by heat treatment. The ethanol extraction process removes soluble carbohydrates, leaving a product that contains at least 65% crude protein (dry matter basis). Because soy protein concentrate contains reduced levels of oligosaccharides, trypsin inhibitors, and lectins compared with conventional soybean meal, it can be used in diets for weanling pigs.

Studies have shown that grinding grains to smaller particle sizes increases the digestibility of energy. However, there are no reports on the effect of particle size on energy digestibility in soy protein concentrate. Therefore, an experiment was conducted to determine the concentrations of digestible (DE) and metabolizable (ME) energy in soy protein concentrate ground to three different particle sizes and to compare these values to values for corn, soybean meal, and fish meal when fed to weanling pigs.

(Read more ...)

Podcast: Effects of fiber, a direct-fed microbial, and feeding duration on digestibility of energy and nutrients by pigs

Dr. Neil Jaworski, a recent Ph. D. recipient from the Stein Monogastric Nutrition Lab, reports on an experiment to determine the effects of fiber, direct fed microbial (DFM) addition, and feeding duration on energy and nutrient digestibility. Among other findings, Jaworski's data show that a five day adaptation period to high fiber diets is sufficient when determining concentrations of digestible and metabolizable energy in diets fed to pigs; and that high fiber diets reduce ileal and total tract digestibility of nutrients and energy, which is not ameliorated by addition of DFM. Adapted from a presentation at the 2016 ASAS Midwestern Section meeting, Des Moines, IA, March 14-16.

(Watch or download)

Podcast: Effect of fat sources on ATTD of minerals

Dr. Laura Merriman, a recent Ph. D. reciepient from the Stein Monogastric Nutrition Laboratory, discusses her research into the effects of saturated and unsaturated fat on mineral digestibility in growing pigs. Adapted from a presentation at the 2016 ASAS Midwestern Section meeting, Des Moines, IA, March 14-16.

(Watch or download)

Press release: Addition of microbial xylanase to diets containing rice bran increases energy value for pigs

URBANA, Ill. – Research at the University of Illinois is finding ways to make rice bran, an abundant co-product of the production of white rice for human consumption, more efficient as a feed ingredient for pigs.

There are 70 to 100 million tons of rice bran produced every year worldwide, but due to its carbohydrate composition, about a quarter of the energy in rice bran is unavailable to pigs. Dr. Hans H. Stein, professor of animal sciences at the University of Illinois, along with graduate student Gloria Casas, hypothesized that an enzyme called xylanase might increase concentrations of digestible energy (DE) and metabolizable energy (ME) in rice co-products.

(Read more ...)

New publications from the Stein Monogastric Nutrition Laboratory

Casas, G. A. and H. H. Stein. 2016. Effects of microbial xylanase on digestibility of dry matter, organic matter, neutral detergent fiber, and energy and the concentrations of digestible and metabolizable energy in rice coproducts fed to weanling pigs. J. Anim. Sci. 94:1933-1939.

Rojas, O. J., E. Vinyeta, and H. H. Stein. 2016. Effects of pelleting, extrusion, or extrusion and pelleting on energy and nutrient digestibility in diets containing different levels of fiber and fed to growing pigs. J. Anim. Sci. 94:1951-1960.

Overholt, M. F., J. E. Lowell, E. K. Arkfeld, I. M. Grossman, H. H. Stein, A. C. Dilger and D. D. Boler. 2016. Effects of pelleting diets without or with distillers’ dried grains with solubles on growth performance, carcass characteristics, and gastrointestinal weights of growing–finishing barrows and gilts. J. Anim. Sci. 94:2172-2183.

Overholt, M. F., J. E. Lowell, K. B. Wilson, R. J. Matulis, H. H. Stein, A. C. Dilger and D. D. Boler. 2016. Effects of feeding pelleted diets without or with distillers dried grains with solubles on fresh belly characteristics, fat quality, and commercial bacon slicing yields of finishing pigs. J. Anim. Sci. 94:2198-2206.
Copyright © 2016 University of Illinois at Urbana-Champaign, All rights reserved.


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