From a practical standpoint, DDGS's higher insoluble fiber content means more undigested material goes straight into the manure, which in turn creates more manure management issues for producers.
"If there is a higher fiber content in the manure, it creates a thicker slurry which could lead to more solids in the pit," said Matthew Robert, U of I visiting research engineer in the Department of Agricultural and Biological Engineering. "This requires the pit to agitate the slurry for a longer period of time to get the solids moving so it can be pumped out. If more solids are left in the pit after it's pumped, it results in less storage for the future."
In addition, Stein's study also opened doors to new research methods.
"We know that fiber could be measured in many ways," Stein said. "One of the standard methods of measurement, Total Dietary Fiber (TDF), is very expensive. We found a less expensive procedure, Neutral Detergent Fiber (NDF), to be quite effective and very closely correlated to TDF."
In future research projects, this finding can help save money and make research dollars stretch further to help swine producers.
Stein's team is continuing to look for ways to increase the solubility of fiber and in turn, find new ways to require less feed to produce one pound of gain.
|Contact: Jennifer Shike|
University of Illinois College of Agricultural, Consumer and Environmental Sciences