Table 11.

Least square means of interactive effects of Zn and Cu sources and phytase on metacarpal mineral concentrations (DM basis) in nursery pigs

	Main effects						Interactions
							ZnO				Zn-MHACb
	Zn source		Cu source		Phytasea		CuSO4		Cu-MHACc		CuSO4		Cu-MHAC
Items	ZnO	Zn-MHAC	CuSO4	Cu-MHAC	No	Yes	No	Yes	No	Yes	No	Yes	No	Yes
Zn, mg/kg	119.35	104.83	112.27	111.91	107.66	116.52	111.18	125.45	109.02	131.76	108.09	104.37	102.35	104.51
Cu, mg/kg	1.06	0.96	1.22	0.79	1.60	0.42	2.21	0.57	1.21	0.24	1.62	0.48	1.34	0.38
Ca, %	13.76	13.55	13.59	13.72	12.80	14.51	13.28	14.19	12.69	14.88	12.80	14.08	12.42	14.89
P, %	7.10	7.04	7.01	7.13	6.55	7.59	6.73	7.37	6.51	7.79	6.56	7.38	6.38	7.83
Ash, %	39.04	38.44	38.55	38.93	36.32	41.16	36.97	40.58	36.32	42.27	36.41	40.24	35.58	41.54

^aNo and yes represent 0 and 500 FTU/kg phytase in the diets, respectively.

^bZn-MHAC represents Zn methionine hydroxy analogue chelate (MINTREX Zn), which is manufactured by Novus International Inc., St. Charles, MO.

^cCu-MHAC represents Cu methionine hydroxy analogue chelate (MINTREX Cu), which is manufactured by Novus International Inc., St. Charles, MO.