Table 3.

Effects of zinc sulfate and zinc amino acid complex (ZnAA) on growth performance in weanling pigs¹⁾ (Zn, mg/kg)

Items	ZnSO4	ZnAA					SEM	p-value
	40	0	20	40	80	120		ANOVA	Linear2)	Quadratic2)
Early phase, d 0 to 14
ADG (g)	231ab	201a	237b	249b	255b	227ab	12	0.049	0.221	0.007
ADFI (g)	404	395	408	396	390	403	22	0.993	0.976	0.822
F:G	1.75	1.97	1.73	1.62	1.58	1.78	0.11	0.223	0.308	0.028
Mortality rate (%)	2.78	2.78	2.78	0.00	2.78	2.78	2.54	0.960	0.898	0.631
Late phase, d 15 to 42
ADG (g)	542	518	557	546	552	548	13	0.420	0.309	0.223
ADFI (g)	772	852	825	770	766	778	33	0.338	0.085	0.165
F:G	1.43	1.65	1.48	1.43	1.39	1.43	0.06	0.090	0.021	0.037
Mortality rate (%)	0.00	0.00	0.00	0.00	0.00	0.00	-	-	-	-
Entire experiment, d 0 to 42
ADG (g)	438ab	413a	450b	447b	453b	441b	9	0.046	0.128	0.019
ADFI (g)	649	700	686	645	641	653	24	0.417	0.104	0.170
F:G	1.49ab	1.70a	1.52b	1.45b	1.42b	1.48b	0.06	0.026	0.011	0.006
Mortality rate (%)	2.78	2.78	2.78	0.00	2.78	2.78	2.54	0.960	0.898	0.631

SEM, standard error of the mean; ANOVA, analysis of variance; ADG, average daily gain; ADFI, average daily feed intake; F:G, feed to gain ratio.

¹⁾Data are the means of six replicates of six pigs (three barrows and three gilts) per pen.

²⁾Linear and quadratic analysis of increasing ZnAA (0 to 120 mg Zn from ZnAA).

^abcMeans within the same column lacking a common superscript letter differ (p<0.05).