Table 7.

Influence of different supplemental sources of Mn, Zn and Cu on the blood trace minerals in the cows and their new-born calves.

Item	Diets				SEM	P-value
	Control	Mineral-sulphate	Mineral-glycine	Mineral-methionine
Mn, ng/dL
Cow blood, d 23 prepartum	22.7	23.1	25.5	24.7	1.32	0.35
Cow blood, d 6 prepartum	20.4	19.8	21.8	25.3	1.57	0.11
Cow blood, d 1 postpartum	19.8b	22.5ab	22.9ab	28.0a	0.99	0.024
Cow blood, d 21 postpartum	13.6b	16.3a	16.4a	14.7ab	0.54	0.026
Cow blood, d 50 postpartum	13.0c	17.9a	16.9ab	14.8bc	0.68	0.023
Calf blood, d 3 of age	32.1	30.9	35.5	35.7	1.65	0.18
Zn, μg/dL
Cow blood, d 23 prepartum	86.5	96.6	105	101	7.12	0.078
Cow blood, d 6 prepartum	93.9	102	98.0	100	7.72	0.73
Cow blood, d 1 postpartum	83.1	100	107	97.4	7.48	0.064
Cow blood, d 21 postpartum	89.8	108	108	105	5.62	0.17
Cow blood, d 50 postpartum	91.1b	112a	105ab	110a	5.21	0.047
Calf blood, d 3 of age	92.3	106	106	103	5.70	0.38
Cu, μg/dL
Cow blood, d 23 prepartum	83.5	89.1	92.8	90.3	5.89	0.59
Cow blood, d 6 prepartum	84.4	94.5	96.9	92.5	6.50	0.48
Cow blood, d 1 postpartum	86.7	99.9	98.1	96.6	5.48	0.37
Cow blood, d 21 postpartum	91.4	103	108	106	6.63	0.35
Cow blood, d 50 postpartum	92.1	102	104	101	6.51	0.53
Calf blood, d 3 of age	72.0	78.3	75.2	79.9	5.96	0.72

SEM = standard error of the means.

^{a, b, c}Within a row, means without a common uppercase superscript differ (P < 0.05).