Scientists at the University of Illinois using co-products from the ethanol and human food industries are helping shed light on ways processing high-fiber animal feed ingredients can enhance pigs’ utilization of the nutrients and energy they contain. The co-products from these industries typically contain more fiber than the standard corn-soybean meal diet.
“It is possible that the benefits of extrusion and pelleting are greater in high-fiber diets than in low-fiber diets. We set out to test that hypothesis, said Hans H. Stein, professor of animal sciences at Illinois.”
Stein and his team tested effects of extrusion, pelleting, or extrusion and pelleting: using a low-fiber diet based on corn and soybean meal; a medium-fiber diet containing corn, soybean meal, and 25% distillers dried grains with solubles (DDGS); and a high-fiber diet containing corn, soybean meal, 25% DDGS, and 20% soybean hulls.
Each diet was divided into four batches. One batch was fed in meal form, one was pelleted at 85 degrees C, one was extruded at 115 degrees C, and the fourth was extruded at 115 degrees C and then pelleted at 85 degrees C.… Continue reading