Editor's Note
The current issue of the newsletter contains the following:
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Two research reports: one on the concentration of energy and digestibility of energy and nutrients in fermented soybean meal fed to weanling pigs, and one on energy digestibility in Dried Fermentation Biomass, Peptone 50, and PEP2+. -
Three new podcasts: an update on standardized total tract digestibility of phosphorus, and two presentations about novel carbohydrates. -
Three new publications from the Stein Monogastric Nutrition Laboratory.
I hope you will find this information useful. To subscribe to the newsletter, please visit http://nutrition.ansci.illinois.edu/newsletter.
Sincerely,
Hans H Stein
Research Reports
Soybean meal is a rich source of digestible amino acids for pigs. However, soybeans contain antinutritional factors such as antigenic proteins, oligosaccharides, lectins, and trypsin inhibitors that make soybeans and conventional soybean meal unsuitable for feeding to weanling pigs in great quantities. Therefore, animal protein is usually included in starter diets for pigs. Because soy protein is less expensive than the animal protein, strategies to reduce the antinutritional factors in soy products have been explored. Fermentation of soybean meal with bacteria such as Aspergillus oryzae and Lactobacillus subtilis eliminates many antinutritional factors, and studies have shown that fermented soybean meal is well-tolerated by weanling pigs. However, there is a lack of data on the digestibility of energy and amino acids in fermented soybean meal. Two experiments were, therefore, conducted to measure the concentration of DE and ME and the digestibility of amino acids in fermented soybean meal and to compare these values to values obtained in conventional soybean meal and fish meal.
Dried Fermentation Biomass (Ajinomoto Heartland LLC) is a co-product of the commercial production of lysine. Peptone 50 and PEP2+ (TechMix LLC) are co-products of heparin production for the human pharmaceutical industry. The latter two products are produced from hydrolyzed pig intestines that are co-dried with a vegetable protein(Peptone 50) orenzymatically processed vegetable proteins (PEP2+). These co-products are possible replacements for fish meal in weanling pig diets.
An experiment was conducted to measure the digestibility of energy and the concentration of digestible (DE) and metabolizable energy (ME) in Dried Fermentation Biomass, Peptone 50, PEP2+, and fish meal fed to weanling pigs.
New podcasts
September 15: Standardized total tract digestibility of phosphorus by pigs: Update
In this update to his November 2010 presentation, Dr. Hans H. Stein talks about how to determine phosphorus digestibility in different feed ingredients, the effects of fermentation of feed ingredients on phosphorus digestibility, the effects of phytase on phosphorus digestibility, and how to formulate diets based on values for the standardized total tract digestibility of phosphorus.
September 21: Caloric value of novel carbohydrates fed to pigs
Dr. Sarah Cervantes-Pahm shares the results of her research into the caloric value of resistant starch 60, resistant starch 75, soluble corn fiber 70, and pullulan.
September 22: Effect of novel carbohydrates on AID and ATTD of GE and nutrients in semi-purified diets fed to pigs
Dr. Sarah Cervantes-Pahm discusses recent research into the digestibility of energy and nutrients in four novel carbohyrates: resistant starch 60, resistant starch 75, soluble corn fiber 70, and pullulan.
Publications
Stein, H. H. 2011. Standardized total tract digestibility (STTD) of phosphorus. Pages 47-52 in Proc. Midwest Swine Nutr. Conf. Indianapolis, IN, Sep. 8, 2011.
Stein, H. H. 2011. Use of corn co-products in diets fed to swine. Pages 47-61 in Proc. 72nd Minnesota Nutr. Conf. Owatonna, MN, Sep. 20-21, 2011.
Newman, D. J., E. K. Harris, A. N. Lepper, E. P. Berg, and H. H. Stein. 2011. Effects of pea chips on pig performance, carcass quality and composition, and palatability of pork. J. Anim. Sci. 89:3132-3139.