Swine day, 1993; Kansas Agricultural Experiment Station contribution; no. 94-194-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 695; Swine; Finishing; Process; Roller mill
The effects of particle size and mill type used to grind corn were determined with 128 pigs (122 lb average initial body wt). Treatments were corn ground in a hammermill and a roller mill to 800 and 400 Î¼m. The roller mill was more efficient than the hammermill when grinding the corn, with less energy consumption and greater production rate per horsepower hour. For the 800 Î¼m treatments, greater uniformity of particle size was achieved with the roller mill than the hammermill; however, at the 400 Î¼m treatments, corn ground with the hammermill was slightly more uniform. Pigs fed corn ground to 400 Î¼m had 7% greater efficiency of gain, and had greater digestibilities of dry matter, nitrogen, and energy than pigs fed corn ground to 800 Î¼m. Mill type did not affect growth performance, but pigs fed corn ground in the roller mill had greater digestibilities of dry matter, nitrogen, and energy and excreted 18% less dry matter and 13% less nitrogen as feces than pigs fed corn ground in a hammermill. There were interactions among mill type and particle size, with digestibilities much greater for the diet with corn ground to 800 Î¼m in the roller mill compared to the hammermill, but only small advantages in nutrient digestibility for diets with corn ground to 400 Î¼m in the roller mill. Mill type did not affect rate or efficiency of gain, but pigs fed diets with roller-milled corn had greater digestibilities of nutrients and, thus, lower excretions of nutrients in feces.; Swine Day, Manhattan, KS, November 18,1993
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Wondra, K J.; Stark, C R.; Hines, Robert H.; Hancock, Joe D.; and Behnke, Keith C.
"Effects of hammermills and roller mills on growth performance, nutrient digestibility, And stomach morphology in finishing pigs,"
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