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Stein Nutrition Newsletter, October 2014
October 2014

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 publication named Article of the Month

"Effects of balancing crystalline amino acids in diets containing heat-damaged soybean meal or distillers dried grains with solubles fed to weanling pigs," by F. N. Almeida, J. K. Htoo, J. Thomson, and H. H. Stein was named the animal Article of the Month for October from Cambridge Journals. The paper was recently published in Volume 8, Issue 10 of Animal.

Research report: Effects of extrusion of corn and oats on the digestibility of energy, crude protein, and fiber in diets fed to pigs

In extrusion, cereal grains are processed under conditions of heat and pressure. Like other types of heat treatment, extrusion may reduce the concentration of antinutritional factors. Extrusion also gelatinizes starch, improving its digestibility. Improved digestibility of starch should, in turn, lead to an increase in digestible energy. Extrusion has also been shown in some studies to solubilize the insoluble fraction of the fiber which would also increase fiber digestibility and digestible energy.

Corn is a high starch ingredient, while oats are high in fiber. An experiment was conducted to determine the effects of extruding corn and oats on the apparent total tract digestibility (ATTD) of energy and fiber when fed to growing pigs.

(Read more ...)

Research Report: Phosphorus digestibility in rice co-products fed to growing pigs

After corn and wheat, rice is the third most widely grown cereal grain worldwide. The phosphorus content of rice is similar to that of corn. Most of the phosphorus in rice is in the bran fraction, and 80-85% of the phosphorus in rice bran is bound to phytate, which limits its digestibility by pigs. Microbial phytase can be used in swine diets to increase the digestibility of phytate-bound phosphorus. However, limited information exists about phosphorus digestibility in rice co-products and how it is affected by microbial phytase. Therefore, an experiment was conducted to determine the apparent (ATTD) and standardized (STTD) total tract digestibility of phosphorus in brown rice, broken rice, full fat rice bran (FFRB), defatted rice bran (DFRB), and rice mill feed fed to growing pigs. A second objective of the experiment was to determine the effect of microbial phytase on phosphorus digestibility in rice co-products.

(Read more ...)

Podcast: Estimation of the requirement for standardized ileal digestible lysine in 25 to 50 kg growing gilts

John Mathai, Master's student in the Stein Monogastric Nutrition Lab, presents the results of an experiment to determine the requirement for standardized ileal digestible lysine in growing gilts fed commercially representative corn-soybean meal diets. Adapted from a presentation at the 2014 ASDA-ASAS-CSAS Joint Annual Meeting, Kansas City, Missouri, July 20-24.

(Listen or download)

Press release: Copra and palm products can be good sources of phosphorus in pig diets, study says

URBANA, Ill. - Copra meal, a co-product of the production of coconut oil, and palm kernel co-products are used in many tropical countries as the main protein source in swine diets. These products are also a source of phosphorus, which is required to ensure proper bone growth, optimal growth performance, and for a number of other physiological functions in growing pigs. Research at the University of Illinois, led by professor of animal sciences Hans H. Stein, is helping to determine how much digestible phosphorus copra and palm kernel products provide when fed to pigs, and how phosphorus digestibility can be enhanced.

(Read more ...)

New publications from the Stein Monogastric Nutrition Laboratory

Gutierrez, N. A., D. Y. Kil, Y. Liu, J. E. Pettigrew, and H. H. Stein. 2014. Effects of co-products from the corn-ethanol industry on body composition, retention of protein, lipids and energy, and on the net energy of diets fed to growing or finishing pigs. J. Sci. Food Agric. 94:3008-3016.

Mahan, D. C., M. Azain, T. D. Crenshaw, G. L. Cromwell, C. R. Dove, S. W. Kim, M. D. Lindemann, P. S. Miller, J. E. Pettigrew, H. H. Stein, and E. van Heugten. 2014. Supplementation of organic and inorganic selenium to diets using grains grown in various regions of the United States with differing natural Se concentrations and fed to grower-finisher swine. J. Anim. Sci. 92:4991-4997.

Rojas, O. J., Y. Liu, and H. H. Stein. 2014. Concentration of metabolizable energy and digestibility of energy, phosphorus, and amino acids in lemna protein concentrate fed to growing pigs. J. Anim. Sci. 92:5222-5229.

In This Issue

• Article of the Month
• Research report: Effects of extrusion of corn and oats on the digestibility of energy, crude protein, and fiber in diets fed to pigs
• Research report: Phosphorus digestibility in rice co-products fed to growing pigs
• Podcast: Estimation of the requirement for standardized ileal digestible lysine in 25 to 50 kg growing gilts
• Press release: Copra and palm products can be good sources of phosphorus in pig diets, study says
• New publications from the Stein Monogastric Nutrition Laboratory

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