Thesis - Open Access
Master of Science (MS)
DDGS, Enzymes, Nutrition, Pigs, Pretreatment, Whole stilliage
The high fiber content of corn dried distillers’ grains with solubles (DDGS) can limit its utilization in swine diets. Pretreatment with heat and enzymatic predigestion of whole stillage (WS; slurry material that is dried into DDGS) can alleviate negative effects of dietary fiber and can improve digestive and fermentation characteristics of the feedstuff. However, optimal time and temperature of the heat pretreatment of WS, and best enzymes for predigestion of WS have not been identified. Experiments were conducted to identify optimal conditions for heat pretreatment and multienzyme predigestion of WS for pigs. First experiment was conducted to identify optimal temperature and time for later use in largescale pretreatment of WS for in vivo studies. The treatments were untreated WS, and WS that was pretreated (at 70 psi) for 10, 20, or 30 minutes and at 100, 120, 140, or 160°C in a 3 × 4 factorial arrangement. Sub-samples were subjected to porcine in vitro digestion and fermentation. An increase in pretreatment temperature linearly and quadratically increased (P
Library of Congress Subject Headings
Swine -- Feeding and feeds.
Distilling industries -- By-products.
Number of Pages
South Dakota State University
In Copyright - Educational Use Permitted
Jerez-Bogota, Kevin, "Optimization of Conditions for Heat Pretreatment and Enzymatic Predigestion of DDGS for Pigs" (2020). Electronic Theses and Dissertations. 3947.