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Stein Nutrition Newsletter, July 2015
July 2015

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.

Growth performance and bone mineralization in weanling pigs fed diets containing different levels of digestible calcium and digestible phosphorus

It is important to include calcium and phosphorus in the diets in the proper proportions because the excess or deficiency of one mineral may affect the utilization of the other. Calcium requirements in the 2012 NRC are based on a model, which used a 2.15 ratio of total calcium to standardized total tract digestible (STTD) phosphorus. An optimal ratio of STTD calcium to STTD phosphorus has not been reported because not enough data exist on the standardized total tract digestibility of calcium. However, recent studies conducted by the Stein Monogastric Nutrition Lab have determined values for STTD calcium for several calcium sources. With these data, it is possible to determine the requirement for STTD calcium. Therefore, an experiment was conducted to determine the requirement of STTD calcium to maximize growth performance and bone ash in 11 to 25 kg pigs.

(Read more ...)

Effect of particle size of calcium carbonate on growth performance in growing pigs

In poultry, the particle size of inorganic calcium sources has been shown to affect calcium retention and eggshell quality. However, little is known about the effect of particle size of inorganic calcium fed to pigs. Results of a previous experiment conducted in the Stein Monogastric Nutrition Lab indicated that calcium digestibility and retention were not affected by the particle size of supplemental calcium carbonate. A follow-up study was conducted to test the hypothesis that calcium carbonate particle does not affect growth performance by weanling pigs.

(Read more ...)

Podcast: Effects of fiber on the optimum threonine:lysine ratio for 25 to 50 kg growing gilts

John Mathai, a Ph. D. candidate in the Stein Monogastric Nutrition Lab, presents his research on how fiber levels in the diet can affect the optimum threonine to lysine ratio for growing gilts. Adapted from a presentation at the 2015 ASDA-ASAS-CSAS Joint Annual Meeting, Orlando, Florida, July 12-16.

(Watch or download)

Press release: Carbohydrate composition determined in cereals and cereal co-products used in pig feed

URBANA, Ill. - Co-products derived from grains such as corn, wheat, and sorghum are increasingly being used in livestock feed, and research at the University of Illinois is helping to determine the energy value of these grain co-products.

Knowing the specific composition of the carbohydrates in a feed ingredient is important for determining its energy value, explained Hans H. Stein, a U of I professor of animal sciences.

(Read more ...)

New publications from the Stein Monogastric Nutrition Laboratory

Casas, G. A. and H. H. Stein. 2015. Effects of microbial phytase on the apparent and standardized total tract digestibility of phosphorus in rice coproducts fed to growing pigs. J. Anim. Sci. 93:3441-3448.

Maison, T., Y. Liu, and H. H. Stein. 2015. Apparent and standardized total tract digestibility by growing pigs of phosphorus in canola meal from North America and 00-rapeseed meal and 00-rapeseed expellers from Europe without and with microbial phytase. J. Anim. Sci. 93:3494-3502.

Kiarie, E., L. F. Romero, S. Arent, R. Lorentsen, and H. H. Stein. 2015. Comparative efficacy of xylanases on energy and nutrient digestibility in growing pigs fed corn- or wheat-based diets. J. Anim. Sci. 93(Suppl. s3):225 (Abstr.)

Crenshaw, T. D., O. Adeola, M. J. Azain, S. K. Baidoo, S. D. Carter, G. M. Hill, S. W. Kim, P. S. Miller, M. C. Shannon, and H. H. Stein. 2015. Effects of superdosing of microbial phytase in diets for weanling pigs. J. Anim. Sci. 93(Suppl. s3):227 (Abstr.)

Rojas, O. J., E. Vinyeta, and H. H. Stein. 2015. Effects of pelleting and extrusion on energy digestibility in pig diets containing different levels of fiber. J. Anim. Sci. 93(Suppl. s3):227-228 (Abstr.)

Mathai, J. K., J. K. Htoo, J. Thomson, K. J. Touchette, and H. H. Stein. 2015. Effects of dietary fiber on the optimum threonine:lysine ratio for 25- to 50-kg gilts. J. Anim. Sci. 93(Suppl. s3):298 (Abstr.)

Sotak-Peper, K. M., R. C. Sulabo, C. M. Parsons, and H. H. Stein. 2015. Concentrations of nitrogen-corrected apparent metabolizable energy and amino acid digestibility in soybean meal from Argentina, Brazil, China, Thailand, and the United States fed to broilers. J. Anim. Sci. 93(Suppl. s3):299 (Abstr.)

Liu, Y. and H. H. Stein. 2015. Effect of Sal CURB on digestibility of energy and nutrients by growing pigs. J. Anim. Sci. 93(Suppl. s3):855-856 (Abstr.)

Jaworski, N. W., A. Owusu-Asiedu, A. Awati, A. Thomas, and H. H. Stein. 2015. Effect of a 3-strain Bacillus-based direct-fed microbial on growth performance, volatile fatty acid production, carcass characteristics, and gastrointestinal tract weights in growing-finishing pigs fed low or high fiber diets. J. Anim. Sci. 93(Suppl. s3):856 (Abstr.)

Jaworski, N. W., A. Owusu-Asiedu, A. Awati, A. Thomas, and H. H. Stein. 2015. Effect of a 3-strain Bacillus-based direct-fed microbial on growth performance and volatile fatty acid production in nursery pigs fed low or high fiber diets. J. Anim. Sci. 93(Suppl. s3):856 (Abstr.)
 

In This Issue

• Research report: Growth performance and bone mineralization in weanling pigs fed diets containing different levels of digestible calcium and digestible phosphorus
• Research report: Effect of particle size of calcium carbonate on growth performance in growing pigs
• Podcast: Effects of fiber on the optimum threonine:lysine ratio for 25 to 50 kg growing gilts
• Press release: Carbohydrate composition determined in cereals and cereal co-products used in pig feed
• New publications from the Stein Monogastric Nutrition Laboratory

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