Department of Animal Science


Date of this Version

January 2008


Published in 2008 Nebraska Beef Cattle Report. Copyright © 2007 The Board of Regents of the University of Nebraska.


Feed Nutrient Management Plan Economics software (FNMP$; Koelsch et al., 2007; available at under software resources) was used to evaluate the effect of distillers grains inclusion and manure application rate on feedlot nutrient management plans. Inclusion of distillers grains in diets resulted in greater nutrient excretion, land requirements, and manure hauling distances. However, the increased cost of manure management from feeding byproducts has the potential to be offset by increased manure fertilizer value. Changing from N-based to a P-based application rate increased the amount of land required and costs to apply manure. However, when manure was applied at a 4-year P-based rate instead of a 1-year P-based rate, single year land requirement remained similar and application-time was reduced by 41% from the 1-year P-based rate.