The authors thank Ted Frye and Scot Williams of Roche
Vitamins and Fine Chemicals, a division of Hoffmann-La Roche
Inc., Paramus, NJ 07652 and Bruce Boren of Roche Vitamins and
Fine Chemicals, a division of Hoffmann-La Roche Inc., Pendergrass,
GA 30567 for their support and the STAY-Cs. This work was
also supported by Regional Project NE-127, Biophysical Factors
Affecting Poultry Production.