Table 1.

Effects of dietary silybin supplementation on growth performance and diarrhea incidence in weaned piglets (trial 1) ¹.

Item	Silybin Level, mg/kg					SEM	p-Value
	0	50	100	200	400		ANOVA	Linear	Quadratic
BW, kg
Day 0	8.28	8.28	8.28	8.28	8.28	0.49	1.00	1.00	1.00
Day 14	10.39	10.60	10.57	10.23	11.00	0.53	0.88	0.51	0.59
Day 28	16.05	16.05	15.85	16.18	16.51	0.81	0.99	0.62	0.84
Day 42	23.33	23.42	23.63	24.41	24.80	1.12	0.86	0.28	0.88
ADG 2, g
Day 0–14	151	166	164	140	194	16.76	0.25	0.15	0.23
Day 14–28	404	389	377	422	394	26.05	0.82	0.92	0.86
Day 28–42	520	526	556	588	592	25.53	0.20	0.03	0.34
Day 0–42	358	360	366	388	393	17.56	0.54	0.11	0.73
ADFI 3, g
Day 0–14	270	297	280	262	316	22.26	0.47	0.29	0.36
Day 14–28	659	674	671	700	692	29.66	0.90	0.43	0.62
Day 28–42	996	927	963	1038	977	38.63	0.46	0.68	0.61
Day 0–42	642	633	638	672	662	26.63	0.86	0.42	0.75
FCR 4
Day 0–14	1.81	1.86	1.72	1.96	1.65	0.11	0.30	0.34	0.23
Day 14–28	1.67	1.74	1.79	1.68	1.78	0.08	0.77	0.53	0.89
Day 28–42	1.92 a,x	1.77 ab	1.74 ab,y	1.77 ab	1.65 b	0.05	0.02	0.00	0.35
Day 0–42	1.80	1.76	1.75	1.74	1.68	0.03	0.24	0.03	0.91
DI 5, %
Day 0–14	8.93 a	5.36 ab	6.55 a	7.32 a	2.98 b	-	0.02	-	-

SEM = standard error of the mean; BW = body weight. ¹ Six replicates per treatment (n = 6), four piglets per replicate; the total number of animals is 120. ² Average daily gain (ADG) = body weight gain of the pen/piglets’ number/days. ³ Average daily feed intake (ADFI) = feed intake of the pen/piglets’ number/days. ⁴ Feed conversion ratio (FCR) = feed intake of the pen/body weight gain of the pen. ⁵ Diarrhea incidence (DI), % = the number of piglets with diarrhea/the total number of weaned piglets × 100%. ^a,b Values within a row without common letters differ significantly (p < 0.05). ^x,y Values listed in the same row with different superscripts tend to be different (0.05 ≤ p < 0.1).