With selenium added to many feeds, vitamin E fortification will probably be reduced. Many feeds were formulated to contain more vitamin E than needed in an effort to prevent selenium deficiencies. Under most practical feeding situations for grower-finisher rations, 0.1 ppm selenium and 10,000 IU of vitamin E per ton should be adequate in Missouri rations and provide some margin of safety. If selenium is used, it is important that an excess is not put into the diet. Excess quantities of selenium can be toxic.
Toxic levels are around seven parts per million.
Salt to be added at the rate of 10 pounds per ton of complete ration. Copyright 1999 University of Missouri. Published by University Extension , University of Missouri-Columbia. Ronald J. Turner, Director, Cooperative Extension Service, University of Missouri and Lincoln University, Columbia, Missouri 65211. University Extension does not discriminate on the basis of race, color, national origin, sex, religion, age, disability or status as a Vietnam-era veteran in employment or programs.