Table 5.

Serum mineral element concentrations of weaned pigs fed diets containing graded levels of montmorillonite (d 28)¹

Items	Level of montmorillonite (%)					SEM	p value
	0.0	0.5	1.0	2.5	5.0		ANOVA	Linear	Quadratic
Calcium (μg/mL)	85.0	86.0	90.3	94.3	89.0	6.94	0.52	0.20	0.30
Phosphorus (mmol/L)	2.24	2.17	2.15	2.24	1.92	0.39	0.63	0.27	0.44
Potassium (μg/mL)	176	199	196	196	187	16.7	0.48	0.50	0.20
Sodium (μg/mL)	2,606	2,619	2,693	2,787	2,774	116.2	0.25	0.02	0.08
Zinc (μg/mL)	0.75	0.74	0.70	0.78	0.81	0.09	0.71	0.37	0.39
Copper (μg/mL)	1.51	1.59	1.81	1.56	1.73	0.17	0.23	0.25	0.41
Iron (μg/mL)	1.57	1.58	1.71	1.66	1.47	0.40	0.96	0.85	0.75
Manganese (μg/mL)	ND2	ND	ND	ND	ND	ND	ND	ND	ND
Magnesium (μg/mL)	18.67	18.67	19.67	22.67	19.67	1.98	0.16	0.15	0.26

¹Values are the means of six replicates.

²ND = Not detected.