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Stein Nutrition Newsletter, January 2013
January 2013

Welcome

Welcome to the Stein Nutrition Newsletter! I hope you will find this information useful. For more information, please visit our website at http://nutrition.ansci.illinois.edu.

Research Report: Effect on amino acid digestibility of reducing the particle size of corn fed to growing pigs

Research has shown that grinding cereal grains in diets fed to pigs into smaller particle sizes improves growth performance. Feed ground to smaller particle sizes has more surface area on which digestive enzymes can work, so digestibility of energy and nutrients that are enzymatically digested may also be improved. Previous research at the University of Illinois indicated that particle size had no effect on the digestibility of phosphorus, but that decreasing particle size increased energy digestibility in corn in the range of 338.5 μm to 864.5 μm.

However, it is not known if reduced particle size also increase amino acid digestibility. Therefore, an experiment was conducted to determine the standardized ileal digestibility (SID) of amino acids in corn that was ground to different particle sizes and fed to growing pigs.


(Read more...)

Concentration of DE and ME and digestibility of energy in high protein canola meal, conventional canola meal, and soybean meal

Canola meal is the defatted meal that remains after oil has been extracted from the seeds of the rapeseed plant, Brassica napus.  Canola meal is high in crude protein and amino acids relative to most plant protein sources, and the amino acids in canola meal are well digested by pigs. However, it is also relatively high in fiber, which reduces energy digestibility and digestible energy concentration. New varieties of Brassica napus with a thinner seed coat have been hybridized, which contain less fiber and more protein than conventional rapeseed. The meal produced from these varieties is known as high protein canola meal. No data exist for the digestibility of energy in this source of high protein canola mealwhen fed to pigs. Therefore, an experiment was conducted to determine the apparent total tract digestibility (ATTD) of energy and the concentrations of digestible and metabolizable energy in two sources of high protein canola meal (CM-HP1 and CM-HP2) fed to growing pigs, and to compare these values with values for conventional canola meal (CM-CV) and soybean meal (SBM).


(Read more ...)

Press release: Using lysine estimates to detect heat damage in DDGS

URBANA – Distillers dried grains with solubles (DDGS) are a good source of energy and protein in swine diets. However, they can be damaged by excessive heat during processing, compromising their nutritional value. University of Illinois researchers have found that it is possible to assess heat damage by predicting the digestibility of lysine in DDGS.


(Read more...)

New publications

Almeida, F. N., and H. H. Stein. 2012. Aspects of amino acid digestibility in feed ingredients fed to pigs. Pages 253-266 in Recent Advances in Animal Nutrition. Garnsworthy, P. C. and J. Wiseman, eds. Nottingham University Press, Nottingham, UK.

Shurson, G. C., R. T. Zijlstra, B. J. Kerr, and H. H. Stein. 2012. Feeding biofuels co-products to pigs. Pages 175-207 in Biofuel Co-products as Livestock Feed: Opportunities and Challenges. Makkar, H. P. S., ed. Food and Agriculture Organization of the United Nations, Rome, Italy.

Urriola, P. E., S. K. Cervantes-Pahm, and H. H. Stein. 2013. Fiber in swine nutrition. Pages 255-276 in Sustainable Swine Nutrition. Chiba, L. I., ed. John Wiley & Sons Inc., Ames, IA.

Kil, D. Y., S. K. Cervantes-Pahm, and H. H. Stein. 2013. Bioavailability of amino acids, lipids, and carbohydrates in feedstuffs. Pages 317-339 in Sustainable Swine Nutrition. Chiba, L. I., ed. John Wiley & Sons Inc., Ames, IA.

Baker, D. H. and H. H. Stein. 2013. Bioavailability of minerals and vitamins in feedstuffs. Pages 341-365 in Sustainable Swine Nutrition. Chiba, L. I., ed. John Wiley & Sons Inc., Ames, IA.

Stein, H. H. 2012. The new swine NRC. Pages 17-29 in XXVIII Curso de Especialización: Avances en nutrición y alimentación animal, Madrid, Nov. 7-8, 2012.

Almeida, F. N., O. J. Rojas, and H. H. Stein. 2012. Effects of thermal processing on the nutritional value of feed ingredients. Pages 269-274 in XXVIII Curso de Especialización: Avances en nutrición y alimentación animal, Madrid, Nov. 7-8, 2012.

In This Issue

• Research Report: Effect on amino acid digestibility of reducing the particle size of corn fed to growing pigs
• Research Report: Concentration of DE and ME and digestibility of energy in high protein canola meal, conventional canola meal, and soybean meal
• Press release: Using lysine estimates to detect heat damage in DDGS
• New publications from the Stein Monogastric Nutrition Laboratory

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