Table 3.

Effects of sodium butyrate on growth performance of broilers.

Item	Sodium butyrate level1, mg/kg				SE	P-value
	CON	T1	T2	T3		Linear	Quadratic
BW (g)
Day 1	32.83	31.67	31.83	31.67	0.85	0.3900	0.5621
Day 21	709.57a	711.79a	725.58a,b	674.71b	5.19	0.0009	<0.0001
Day 35	1449.67c	1508.00b	1549.67a	1458.67c	5.50	0.0112	<0.0001
ADG (g)
Day 1–21	32.22b	32.39a,b	33.04a	30.62c	0.25	0.0013	<0.0001
Day 22–35	52.87a	56.87b	58.86c	56.00d	0.06	<0.0001	<0.0001
Day 1–35	40.48c	42.18b	43.37a	40.77c	0.16	0.0082	<0.0001
ADFI (g)
Day 1–21	51.39a	50.69a	50.03a,b	48.81b	0.56	0.0031	0.6458
Day 22–35	106.44b	111.84a,b	112.37a,b	115.29a	2.04	0.0076	0.5495
Day 1–35	73.41	75.15	74.97	75.40	0.91	0.1690	0.4808
FCR
Day 1–21	1.60	1.57	1.51	1.59	0.02	0.4840	0.0063
Day 22–35	2.01	1.97	1.91	2.06	0.04	0.6503	0.0173
Day 1–35	1.81	1.78	1.73	1.85	0.07	0.5825	0.0030

^a,b,cWithin the same row with different superscripts differ (P < 0.05).

Abbreviation: FCR, feed conversion ration.

¹Sodium butyrate level: CON, control diet without sodium butyrate; T1, sodium butyrate at 300 mg/kg; T2, sodium butyrate at 600 mg/kg; T3, sodium butyrate at 1,200 mg/kg.