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Stein Nutrition Newsletter, April 2016
April 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.

Research report: Amino acid digestibility 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. 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.

Reducing the particle size of soybean meal can increase amino acid digestibility due to the increased surface area for enzymes to work on. However, there are no known data on the effect of particle size on amino acid digestibility in soy protein concentrate. Therefore, an experiment was conducted to determine the digestibility of crude protein and amino acids in soy protein concentrate ground to three different particle sizes and to compare these values to values for soybean meal and fish meal when fed to weanling pigs.

(Read more ...)

Podcast: Effect of phytase on ATTD and STTD of Ca in feed ingredients of animal origin fed to growing pigs

Laura Merriman, a Ph. D. candidate in the Stein Monogastric Nutrition Laboratory, discusses her research into the effects of adding microbial phytase on the digestibility of calcium in diets containing meat and bone meal, meat meal, poultry byproduct meal, and poultry meal. Adapted from a presentation at the 2016 ASAS Midwestern Section meeting, Des Moines, IA, March 14-16.

(Listen or download)

In This Issue

• Research report: Amino acid digestibility in soy protein concentrate with different particle sizes fed to weanling pigs
• Podcast: Effect of phytase on ATTD and STTD of Ca in feed ingredients of animal origin fed to growing pigs

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