68 

 concentrations than did CuO for rats receiving ZnMet (Figure 

 6-1A) . There were no bone Zn differences (P > .05) from Cu 

 source for the ZnLys source. Bone Zn concentrations were 



TABLE 6-3. Mean tissue Zn concentrations for rats 

 supplemented with different sources of Zn and Cu 

 (mg/kg, DMB a 



)a \ b 



Sources Bone Kidney Liver Muscle 



ZnS0 4 

 ZnMet 

 ZnLys 

 CuO 

 CuS0 4 

 CuLys 



149 



84 



76 



58 



150 



85 



77 



57 



150 



84 



76 



58 



147= 



85 



75 



56 



150 c " d 



85 



77 



58 



153 d 



83 



77 



58 



a DMB= Dry matter basis, bone also fat free. 



b SEM are as follows: bone = 6, kidney = 14, liver = 10, 



muscle = 8 . 



c,d Means with different subscripts within column and mineral 



differ (P < .05) . 



higher (P < .05) for ZnLys than ZnS0 4 rats that received CuS0 4 

 supplementation, however, ZnLys had the lowest (P < .05) bone 

 Zn concentrations when CuLys was the Cu supplementation source 

 (Figure 6-1B) . There were no differences (P > .05) in Zn 

 source for Zn tissue levels when CuO was the supplemental Cu 

 source . 



All tissue Cu concentrations were affected (P < .05) by 

 supplemental Cu source (Table 6-4) . In all tissues where Cu 

 was measured, CuO was the lowest (P < .05) available source of 

 Cu . Furthermore, CuS0 4 supplemented rats had higher (P < .05) 

 Cu concentrations in muscle than from CuLys supplementation. 



