Stein Nutrition Newsletter, September 2016

View this email in your browser

September 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.

In This Issue

• Research report: Effects of zinc oxide and microbial phytase on standardized total tract digestibility of calcium in diets fed to growing pigs
• Podcast: Effects of high protein canola meal on digestibility of phosphorus and growth performance in pigs
• Press release: U of I research studies calcium requirements for weanling pigs
• New publications from the Stein Monogastric Nutrition Laboratory

Research report: Effects of zinc oxide and microbial phytase on standardized total tract digestibility of calcium in diets fed to growing pigs

Zinc oxide, when added to weanling pig diets in pharmacological quantities of up to 2,500 mg/kg, can help prevent diarrhea during the post-weaning period. However, adding large quantities of zinc to diets has drawbacks. Zinc can interfere with calcium digestibility because it competes for the same transport pathway in cells lining the small intestine. Zinc may also reduce calcium digestibility by forming complexes with calcium and phytate.

The standardized total tract digestibility (STTD) of calcium in various ingredients has only recently been determined, and possible interactions between zinc and phytase on the STTD of calcium have not yet been reported. Therefore, an experiment was conducted to determine the effects of addition of zinc oxide and microbial phytase on STTD of calcium in diets fed to weanling pigs.

(Read more ...)

Podcast: Effects of high protein canola meal on digestibility of phosphorus and growth performance in pigs

Yue She, former visiting scholar in the Stein lab, discussed the results of two studies investigating the effects of feeding high protein canola meal to pigs. The objective of the first study was to determine the ATTD and STTD of phosphorus in high protein canola meal fed to growing pigs. The second study was conducted to determine the optimum inclusion rate of high protein and conventional canola meal in diets fed to weanling pigs. Adapted from a presentation at the 2016 ASDA-ASAS-CSAS-WSASAS Joint Annual Meeting, Salt Lake City, Utah, July 19-23.

(Watch or download)

Press release: U of I research studies calcium requirements for weanling pigs

URBANA, Ill. – Two recent studies from the University of Illinois have helped determine how much calcium growing pigs require, and illuminate the mechanisms by which they absorb it.

Calcium must be fed in adequate amounts and in the right balance with phosphorus to optimize pig performance. "We can use different measures to determine requirements for calcium," says Hans H. Stein, professor of animal sciences at Illinois. "Different amounts may be needed to maximize growth performance, mineral deposition in bone, or calcium and phosphorus retention."

(Read more ...)

New publications from the Stein Monogastric Nutrition Laboratory

Oliveira, M. S. and H. H. Stein. 2016. Digestibility of energy, amino acids, and phosphorus in a novel source of soy protein concentrate and in soybean meal fed to growing pigs. J. Anim. Sci. 94:3343-3352.

González-Vega, J. C., Y. Liu, J. C. McCann, C. L. Walk, J. J. Loor, and H. H. Stein. 2016. Requirement for digestible calcium by eleven- to twenty-five–kilogram pigs as determined by growth performance, bone ash concentration, calcium and phosphorus balances, and expression of genes involved in transport of calcium in intestinal and kidney cells. J. Anim. Sci. 94:3321-3334.

Huang, C., H. H. Stein, and G. A. Casas. 2016. Optimising soy protein concentrate use in pig diets. Pages 32-33 in Pig Progress, July 2016.