J. Anim Sci.
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J. Anim Sci. 1973. 36:902-907.
© 1973 American Society of Animal Science
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Evaluation of Infrared-Roasted and Extruder-Processed Soybeans in Baby Pig Diets1

J. L. Faber and Dean R. Zimmerman

Iowa Agriculture and Home Economics Experiment Station, Ames 500102

Abstract

Two feeding trials and one metabolism trial were conducted to evaluate infrared-roasted and extruder-processed soybean products for baby pigs. Performance (rate of gain and feed:gain) of pigs fed a corn, infrared-roasted soybean diet was improved by lowering the calorie:protein ratio with addition of protein in trial 1, but not in trial 2. Performance of pigs fed corn-soybean meal plus soybean oil diets was superior to that of pigs fed infrared-roasted soybean diets in trial 2. Digestibility of energy and protein from infrared-roasted soybeans was lower than from soybean meal plus soybean oil or extruder-processed soybeans in trial 3. Protein quality was equal for all three products, as estimated by apparent biological value.

Footnotes

1 Journal Paper No. J-7372 of the Iowa Agriculture and Home Economics Experiment Station, Ames. Project No. 1785.

2 Department of Animal Science.






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