Table 2. Effects of dietary coated CuSO4 and ZnO on growth performance of weaned pigs¹⁾.

Item2)	CON	T1	T2	T3	SEM	p-value
Day 1 to 14
Initial BW (kg)	7.30	7.31	7.29	7.27	0.31	1.000
Final BW (kg)	10.73	11.27	11.75	11.87	0.44	0.503
ADG (g/d)	245b	283ab	319a	328a	20.72	0.040
ADFI (g/d)	437	429	415	429	26.52	0.994
G:F (g/g)	0.561b	0.659ab	0.768a	0.766a	0.042	0.021
Day 15 to 42
Initial BW (kg)	10.73	11.27	11.75	11.87	0.44	0.503
Final BW (kg)	21.49b	22.23ab	22.85a	22.98a	0.31	0.030
ADG (g/d)	384	391	396	397	13.02	0.925
ADFI (g/d)	956	951	963	965	29.55	0.999
G:F (g/g)	0.402	0.412	0.412	0.411	0.020	0.993
Day 1 to 42
Initial BW (kg)	7.30	7.31	7.29	7.27	0.31	1.000
Final BW (kg)	21.49b	22.23ab	22.85a	22.98a	0.31	0.030
ADG (g/d)	338b	355ab	371a	374a	7.28	0.020
ADFI (g/d)	783	777	780	786	24.78	0.999
G:F (g/g)	0.431	0.457	0.475	0.476	0.016	0.419
Frequency of diarrhea3)(%)	13.87	9.28	10.14	9.92		0.051

¹⁾Each value is the mean of 6 replicates (4 pigs/pen).

²⁾CON, a basal weaner diet based on corn and soybean meal; T1, CON + 2,500 ppm standard ZnO; T2, CON + 100 mg/kg dietary coated CuSO₄ and 100 mg/kg dietary coated ZnO; T3, CON + 200 mg/kg dietary coated CuSO₄ and 200 mg/kg dietary coated ZnO; BW, body weight; ADG, average daily gain; ADFI, average daily feed intake; G:F, gain to feed ratio.

³⁾Frequency of diarrhea for the first 2 weeks after weaning (%) = (number of diarrhea score of 4 or higher / number of pen days) × 100. Data was analyzed using the Chi-square test.

^a,bMeans in the same row with different superscripts are different (p < 0.05).