Table 5.

Effects of mineral supplement availability on liver mineral concentrations in suckling calves grazing native range at weaning; combined averages of years 1 and 2.

	Treatment1
Item, µg/g2	CON	SUPP	SE	P-value3
Se	1.62	1.93	0.063	0.002
Cu	49.3	103.3	6.28	<0.0001
Zn	168.1	171.1	6.35	0.73
Mo	3.45	3.22	0.127	0.21
Mn	8.77	9.17	0.255	0.26
Co	0.113	0.174	0.009	<0.0001

¹Treatments were: CON—calves were grazing pastures alongside their dams with no access to a vitamin and mineral supplement or SUPP—calves were grazing pastures alongside their dams with access to a vitamin and mineral supplement.

²Mineral concentrations are reported in µg/g on a dry matter basis. Liver samples were analyzed for concentrations of Se, Cu, Zn, Mo, Mn, and Co via inductively coupled plasma mass spectrometry at the Diagnostic Center for Population and Animal Health at Michigan State University (East Lansing, M.I.).

³Significance considered at P ≤ 0.05.