Table 10.

Expression of liver genes in calves born from beef cows that received diets containing supplemental INR (n = 95) or AAC (n = 95) during gestation^1,2

Item	INR	AAC	SEM	P-value
CUT
Birth	2.19	2.23	0.11	0.78
24 h after birth	2.51	2.53	0.11	0.91
Weaning	2.13	2.01	0.10	0.40
MT
Birth	33.7	32.9	7.2	0.94
24 h after birth	59.4	68.4	7.2	0.38
Weaning	39.9	54.1	8.8	0.26
SOD
Birth	2.92	2.96	0.20	0.88
24 h after birth	2.77	2.70	0.20	0.79
Weaning	1.78	1.98	0.07	0.04

¹INR and AAC cows received the same amount of supplemental Co, Cu, Mn, and Zn from sulfate sources or Availa 4 (Zinpro Corporation, Eden Prairie, MN). Cows were assigned to the experiment at 117 ± 2 d of gestation (day 0).

²Liver samples were collected via biopsy (Arthington and Corah, 1995) at birth, 24 h after birth, and at weaning (day 367). Values are expressed as relative fold change compared within CT of reference genes analyzed within the same sample (Ocón-Grove et al., 2008). Samples were collected from 30 cows of each treatment randomly selected on each sampling day.