Enhanced distiller's dried grains with solubles (E-DDGS) provides greater energy concentration in swine diets, improving the nutritional value of DDGS for pigs, according to a study at the University of Illinois.
The end result is not only improved feed efficiency, but in many cases, increased growth rates, leading to increased profits.
DDGS has a high fiber content. A process known to separate fiber from DDGS — called the elusieve process — removes about 10% of the material, mostly fiber, yielding E-DDGS with 2.3% less total dietary fiber than conventional DDGS (28.7% vs. 26.4% fiber).
The E-DDGS has higher crude protein (CP) and higher fat concentration (Table 1 ).
The goal of this experiment was to determine digestible energy (DE) and metabolizable energy (ME) in two sources of DDGS, and in E-DDGS produced from each of the DDGS sources.
The trial consisted of 30, 51-lb. growing pigs and 30, 161-lb. finishing pigs placed in metabolism cages and assigned a randomized diet.
The two groups of pigs received five different diets: standard corn and soybean meal and four additional diets formulated by replacing 40% of the base diet with 40% of each source of DDGS and E-DDGS.
Pigs were fed experimental diets for 14 days. Urine and feces were collected during the final five days.
Diets containing E-DDGS produced 6-7% greater DE and ME than those containing DDGS (Table 2 ). Researchers said the result was expected due to the fiber removal from DDGS, resulting in an ingredient higher in fat and protein content.
About 94% of the DE and ME in the original DDGS was captured in the E-DDGS. The DE and ME values were not different between growing and finishing pigs.
In conclusion, the co-product E-DDGS is nutritionally more appropriate for pigs than DDGS because of the lower fiber concentration and higher energy density.
Researchers: J.A. Soares, H.H. Stein, R. Srinivasan, V. Singh and J.E. Pettigrew, University of Illinois. Contact Pettigrew by phone (217) 244-6927, fax (217) 333-7861 or e-mail [email protected] .