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Stein Nutrition Newsletter, April 2014
April 2014

Welcome

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

Research report: Effects of microbial phytase on apparent and standardized total tract digestibility of calcium in calcium supplements fed to growing pigs

Calcium supplementation is important for swine diets because most commonly used feed ingredients have low concentrations of calcium. In a typical corn-soybean meal diet for a growing pig, the corn and soybean meal contribute only about 16% of the total calcium, with the rest coming from supplements. Apparent total tract digestibility (ATTD) values for calcium have not been reported for many common ingredients, and no values for the standardized total tract digestibility (STTD) of calcium have been reported. Therefore, an experiment was conducted to determine the ATTD and STTD of calcium in five calcium supplements.

An additional objective was to test the hypothesis that inclusion of microbial phytase in the diets increases the ATTD and STTD of calcium. Results of previous research has indicated that inclusion of microbial phytase in swine diets often increases the digestibility of calcium, but the effect of phytase on the STTD of calcium in individual ingredients has not been reported.

(Read more ...)

Research report: Effects of antibiotic growth promoters in simple or complex diets fed to weanling pigs

Recently, the Food and Drug Administration announced that the number of antibiotic growth promoters that are available to be used by pigs will be reduced to reduce the risk of transferring antibiotic resistance from animals to humans. Only antibiotics that are not used in human medicine may be used as antibiotic growth promoters by animals in the future. To accommodate this change, it may be necessary to re-evaluate the use of antibiotic growth promoters in diets fed to pigs. It is possible that antibiotic growth promoters may be eliminated from swine diets if the complexity of the diets is increased. To test this hypothesis, an experiment was conducted to determine the effects of using an antibiotic growth promoter in diets formulated to vary in complexity.

(Read more ...)

Podcast: Effect of Bacillus spp. direct-fed microbials on fecal VFA concentrations, growth performance, and carcass characteristics of growing-finishing pigs

Neil Jaworski, a Ph. D. candidate in the Stein Monogastric Nutrition Laboratory, presents results of his research into the effects of supplementing complex, high-fiber pig diets with direct-fed microbials selected for their ability to secrete fiber-degrading enzymes. Adapted from a presentation at the 2014 ASAS Midwestern Section meeting, Des Moines, IA, March 17-19.

(Listen or download)

Podcast: Effects of reducing the particle size of corn on growth performance and carcass characteristics of growing-finishing pigs

In the second of two presentations on corn particle size, Ph. D. candidate Oscar Rojas presents the results of an experiment designed to measure the effect of reducing the particle size of corn on growth performance, dressing percentage, back fat, hot carcass weight, and stomach health in growing and finishing pigs. Adapted from a presentation at the 2014 ASAS Midwestern Section meeting, Des Moines, IA, March 17-19.

(Listen or download)

Press release: Nutritional values established for oilseed meals in pig diets

URBANA, Ill. - Oilseed meals are commonly fed to pigs and poultry as sources of protein. The concentration and digestibility of amino acids in oilseed meals has been studied, but these ingredients supply other nutrients in the diet as well. Now researchers at the University of Illinois are providing a more complete picture of the nutritional value of oilseed meals.

(Read more ...)

New publications from the Stein Monogastric Nutrition Laboratory

Cervantes-Pahm, S. K., Y. Liu, and H. H. Stein. 2014. Comparative digestibility of energy and nutrients and fermentability of dietary fiber in eight cereal grains fed to pigs. J. Sci. Food Agric. 94:841–849.

Cervantes-Pahm, S. K., Y. Liu, and H. H. Stein. 2014. Digestible indispensable amino acid score and digestible amino acids in eight cereal grains. Brit. J. Nutr. 111:1663-1672.

Cervantes-Pahm, S. K. Y. Liu, A. Evans, and H. H. Stein. 2014. Effect of novel fiber ingredients on ileal and total tract digestibility of energy and nutrients in semi-purified diets fed to growing pigs. J. Sci. Food Agric. 94: 1284-1290.

Kim, B. G., D. M. Wulf, R. J. Maddock, D. N. Peters, C. Pedersen, Y. Liu, and H. H. Stein. 2014. Effects of dietary barley on growth performance, carcass traits and pork quality of finishing pigs. Rev. Colomb. Cienc. Pecu. 27:102-113.

Mumm, R. H., P. D. Goldsmith, K. D. Rausch, and H. H. Stein. 2014. Land usage attributed to corn ethanol production in the United States: sensitivity to technological advances in corn grain yield, ethanol conversion, and co-product utilization. Biotechnol Biofuels 7:61.

Stein, H. H. 2014. Illinois soybean farmers can support the livestock industry. Page 5 in Illinois Field & Bean, March 2014.

In This Issue

• Research report: Effects of microbial phytase on apparent and standardized total tract digestibility of calcium in calcium supplements fed to growing pigs
• Research report: Effects of antibiotic growth promoters in simple or complex diets fed to weanling pigs
• Podcast: Effect of Bacillus spp. direct-fed microbials on fecal VFA concentrations, growth performance, and carcass characteristics of growing-finishing pigs
• Podcast: Effects of reducing the particle size of corn on growth performance and carcass characteristics of growing-finishing pigs
• Press release: Nutritional values established for oilseed meals in pig diets
• New publications from the Stein Monogastric Nutrition Laboratory

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