LIST OF TABLES 



Table page 



TABLE 3-1. Composition of concentrate diet offered to 



cattle (as fed) 24 



TABLE 3-2. Mean Zn concentrations in tissues of cattle 



supplemented with three sources of Zn 29 



TABLE 3-3. Mean Cu levels in tissues of cattle 



supplemented with three sources of Zn 3 



TABLE 3-4. Mean metallothionein levels in tissues of 



cattle supplemented with three sources of Zn . . . 30 



TABLE 4-1. Composition of basal diet offered to sheep 



(as fed) 36 



TABLE 4-2 . Mean Zn concentrations in tissues of sheep 



supplemented with four sources of Zn 40 



TABLE 4-3. Mean metallothionein content of tissues of 



sheep supplemented with four sources of Zn . . . . 40 



TABLE 4-4. Mean Cu levels in tissues of sheep 



supplemented with four sources of Zn 41 



TABLE 5-1. Composition of basal diet offered to sheep 



(as fed) 50 



TABLE 5-1. Liver and kidney Cu concentrations of sheep 



exposed to high Cu levels 57 



TABLE 5-2 . Liver and kidney Zn concentrations of sheep 



exposed to high Cu levels 58 



TABLE 6-1. Composition of purified diet fed to rats 



(As-fed) 65 



TABLE 6-2. Mean plasma Zn and Cu concentrations for 

 rats supplemented with different sources of Zn and 

 Cu 67 



VII 



