Editor's Note
The current issue of the newsletter contains the following:
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Two research reports: one on predicting phosphorus and calcium digestibility in meat and bone meal; and one on phosphorus digestibility in Dried Fermentation Biomass, Peptone 50, and PEP2+. -
Three new podcasts about corn and corn co-products, cereal grains, and low-Kunitz soybeans. -
Two 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
Digestibility of phosphorus and calcium in meat and bone meal fed to growing pigs
Meat and bone meal (MBM) is a product of the rendering industry composed primarily of the offal and bones of slaughtered livestock, fat from unmarketable animal tissues, unsellable retail meat products, and whole condemned carcasses (excluding hair, blood, hooves, horns, and contents of the gastrointestinal tract). MBM is traditionally used as an animal protein source in swine diets, but because of its high concentrations of calcium and phosphorus, it can also replace inorganic phosphates in swine diets.
The proportions of soft tissue and bone in different sources of MBM can vary widely. Because mineral digestibility differs in bone and soft tissue, the variation in composition of MBM sources leads to a variation in mineral digestibility values.
An experiment was conducted to 1) determine the apparent (ATTD) and standardized (STTD) total tract digestibility of phosphorus and the ATTD of calcium in 8 different sources of MBM, 2) estimate variation among MBM sources, and 3) develop equations to predict the concentrations of digestible phosphorus and calcium in MBM.
Dried Fermentation Biomass (Ajinomoto Heartland LLC, Chicago, IL) is a co-product of the commercial production of lysine. Peptone 50 and PEP2+ (TechMix LLC, Stewart MN) 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) or enzymatically processed vegetable proteins (PEP2+). These co-products are possible replacements for fish meal in weanling pig diets.
An experiment was conducted to measure the apparent total tract digestibility (ATTD) and standardized total tract digestibility (STTD) of phosphorus in Dried Fermentation Biomass, Peptone 50, PEP2+, and fish meal fed to weanling pigs.
New podcasts
October 10: Corn and corn co-products fed to swine
Dr. Hans H. Stein talks about the composition and digestibility of nutrients in corn and a variety of corn co-products including distillers dried grains with solubles, high protein distillers dried grains, corn germ, corn gluten meal, corn gluten feed, and hominy feed.
October 12: Digestibility of energy and nutrients in cereal grains fed to growing pigs
Dr. Sarah Cervantes-Pahm presents the results of research into digestibility of energy and carbohydrates in eight cereal grains fed to growing pigs. She also discusses the implications of the research for human nutrition.
October 14: Ileal amino acid digestibility in conventional and low-Kunitz soybeans fed to weanling pigs
Dr. Sarah Cervantes-Pahm presents the result of former Master's student Kurtis Goebel into amino acid digestibility in conventional and low-Kunitz soybeans fed to weanling pigs. She discusses amino acid digestibility in soybeans treated at both low and high temperatures, and looks at whether low-Kunitz soybean varieties can be fed without heat treatment.
Publications
González-Vega, J. C., B. G. Kim, J. K. Htoo, A. Lemme, and H. H. Stein. 2011. Amino acid digestibility in heated soybean meal fed to growing pigs. J. Anim. Sci. 89:3617-3625.
Kil, D. Y. and H. H. Stein. 2011. Dietary soybean oil and choice white grease improve apparent ileal digestibility of amino acids in swine diets containing corn, soybean meal, and distillers dried grains with solubles. Rev. Colomb. Cienc. Pecu. 24:248-253.