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University of Illinois at Urbana-Champaign 618013
Abstract
Five experiments were conducted with 282 finishing pigs to evaluate the use of condensed fermented corn solubles with germ meal and bran as an amino acid source for swine. This wet milling byproduct referred to as dried steep liquor concentrate (DSLC) is becoming a major byproduct of the industry as methods of corn processing change. DSLC serving as the only amino acid supplement for corn supported much lower gain and efficiency in finishing pigs than did a corn-soybean meal diet. In corn-DSLC diets designed to meet the requirements for lysine and tryptophan performance could not be markedly improved by supplementing with either of the two amino acids singly. However, performance was greatly improved when both amino acids were added to the diet. The experiments clearly demonstrate that lysine and tryptophan in DSLC have limited biological availability.
1 This research supported in part by funds from Illinois Agricultural Experiment Station and A. E. Staley, Inc., Decatur, Illinois.
2 Present address: E. A. P. Tequcigalpa, Honduras, Central America.
3 Department of Animal Science.
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