Editor's Note
The current issue of the newsletter contains the following:
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Two research reports: the first on digestible and metabolizable energy in animal protein sources, and the second on amino acid digestibility in canola and 00-rapeseed products. -
Four 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
Protein sources of animal origin provide highly digestible protein in diets for weanling pigs. Chicken meal consists primarily of skin, flesh, and sometimes bones from processed birds. Poultry by-product meal contains offal from processed chickens, including feet, necks, beaks, undeveloped eggs, and intestinal contents. AV-E digest consists of enzymatically hydrolyzed spent hens and extruded egg albumin, mixed with a soybean meal carrier. Ultrapro is produced from enzymatically hydrolyzed porcine intestines, which are used in the production of the drug heparin. There is a lack of data on the concentration of digestible and metabolizable energy in all of these ingredients, which limits their use in diets fed to weanling pigs.
An experiment was conducted to determine the concentrations of digestible and metabolizable energy in chicken meal, poultry by-product meal, Ultrapro, and AV-E digest, and to compare these values with soybean meal.
Canola meal is produced from the rapeseed plant, a relative of broccoli and mustard. Rapeseed which has been hybridized to be low in both unpalatable glucosinolates and toxic erucic acid is called canola in Canada and the United States and 00-rapeseed in Europe. Oil can be removed from canola or 00-rapeseeds in two ways. Solvent extraction results in the production of canola meal or 00-rapeseed meal, while mechanical expelling results in the production of canola expellers or 00-rapeseed expellers. The meals and expellers have high concentrations of crude protein and amino acids, and can be used as protein sources in swine diets. An experiment was conductedto compare crude protein and amino digestibility between North American canola meal and European 00-rapeseed meal, and between 00-rapeseed meal and 00-rapeseed expellers.
Publications
Almeida, F. N. and H. H. Stein. 2012. Aspects of amino acid digestibility in feed ingredients fed to pigs. Pages 33-34 in Abstracts of the 44th University of Nottingham Feed Conference, Nottingham, UK, June 27-28, 2012.
Stein, H. H., D. Y. Kil, and J. A. Roth. 2012. Strategies for managing weanling pigs fed no antibiotic growth promoters. Swine Focus #003.
Stein, H. H. 2012. The nutritional quality of feed ingredients. Pages 69-77 in Proceedings of the Chinese Swine Industry Symposium, Shanghai, October 24-26, 2012.
Stein, H. H. 2012. Utilization of co-products from corn and soybeans, and alternative proteins by pigs. Pages 82-90 in Proceedings of the Chinese Swine Industry Symposium, Shanghai, October 24-26, 2012.