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Stein Nutrition Newsletter, February 2014
February 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: Amino acid digestibility in processed soybean products, rapeseed expellers, and a fermented mixture of co-products fed to weanling pigs

Soybean meal is the most common source of protein in swine diets in the United States. However, conventional soybean meal contains antinutritional factors such as antigenic proteins, oligosaccharides, lectins, and trypsin inhibitors that limit its use in diets fed to weanling pigs. Methods of processing soybean meal to remove antinutritional factors have been developed. These include enzyme treatment, fermentation, and the removal of soluble carbohydrates.

Like soybean meal, rapeseed products are usually not fed to weanling pigs due to the presence of glucosinolates and relatively high concentrations of fiber in these products. Previous research has shown that fermentation of soybean meal can reduce antinutritional factors and fiber concentrations. It is possible that fermentation can make 00-rapeseed meals and 00-rapeseed expellers suitable for feeding to weanling pigs, but no research has been conducted to confirm this hypothesis. An experiment was conducted to determine the standardized ileal digestibility (SID) by weanling pigs of crude protein and amino acids in four sources of processed soybean products, conventional soybean meal, conventional 00-rapeseed expellers, and in a fermented mixture of co-products including 00-rapeseed expellers, wheat bran, potato peel, and soy molasses.

(Read more ...)

Press release: Researchers determine feather meal good source of energy for swine

Urbana, Ill – Hydrolyzed feather meal is a co-product of the poultry processing industry that can be used as a protein source in swine. A lack of published data on the digestibility of energy and nutrients in feather meal fed to pigs spurred on researchers at the University of Illinois and Auburn University to give producers more information about the nutritional value of this feed ingredient.

Hans H. Stein, a U of I animal sciences researcher, and Lee Chiba, a professor animal nutrition at Auburn University, collaborated to determine amino acid and phosphorus digestibility and the concentration of digestible and metabolizable energy in hydrolyzed feather meal from four different processing plants.

(Read more ...)

New publications from the Stein Monogastric Nutrition Laboratory

Almeida, F. N., J. K. Htoo, J. Thomson, and H. H. Stein. 2014. Digestibility by growing pigs of amino acids in heat-damaged sunflower meal and cottonseed meal. J. Anim. Sci. 92:585-593.

In This Issue

• Research report: Amino acid digestibility in processed soybean products, rapeseed expellers, and a fermented mixture of co-products fed to weanling pigs
• Press release: Researchers determine feather meal good source of energy for swine
• New publications from the Stein Monogastric Nutrition Laboratory

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