50 

 Materials and Methods 



Three crossbred wethers and one crossbred ewe averaging 

 46 kg were randomly assigned to one of two groups. The two 

 groups consisted of basal diet + 250 mg/kg of supplemental Cu 

 from either CuS0 4 or CuLys . Lambs were housed in individual 

 wooden pens (1.4 nr) with expanded metal floors in an open 

 side barn. Feed intake was restricted to 1200 g/hd daily (as- 

 fed basis) and tap water was available ad libitum. The diet 

 (Table 5-1) was formulated to be adequate in protein, energy, 

 vitamins, and minerals for this class of sheep (NRC, 1985) . 

 Lambs were fed the treatment diets for 4-11 wks 



TABLE 5-1. Composition of basal diet 

 offered to sheep (as fed) a . 



Ingredient Percentage 



Ground yellow corn 59 



Cotton seed hulls 21 



Soybean meal (44% CP) 12 



Alfalfa meal (14% CP) 3 



Corn oil 3 



Trace mineral salt b 1 



Ground limestone 1 



Vitamins A and D 3 C .0008 



a Analysis indicated 290 and 303 mg Cu/kg of feed for 

 CuS0 4 and CuLys treatments, respectively. Diets 

 formulated to provide 250 mg supplemental Cu/kg diet. 

 b Provided 2 . 4 mg of I (KI ) , .48 mg of Co (CoC0 3 ), 82 

 mg of Fe (FeS0 4 ), 48.19 mg of Mn (MnSOJ, 40 mg Zn 

 (ZnSOJ and no Cu per kg of diet. 

 c Provided 5,000 IU of vitamin A and 500 IU of 

 vitamin D, per kg of diet. 



