in trial 4 , serum igg titers were unaffected ( p greater than .05 ) when 48 steers ( avg initial wt 248 kg ) were treated with 1 ) no se or vit e , 2 ) 25 mg se plus 340 iu vit e 14 d prior to shipping or 3 ) 25 mg se plus 340 iu vit e 14 d prior to shipping , plus repeat injection on day of arrival at the feedlot .
C0042874
vit e
C0935773
se