Table 9.

Effect of graded levels of guanidinoacetic acid (GAA) on performance of growing-finishing pigs (Exp. 2)

Item	GAA, mg/kg					SEM	P-value
	0	150	300	600	1,200		ANOVA	Linear	Quadratic
Initial BW, kg	53.20	53.18	53.18	53.18	53.21	0.05	0.98	0.71	0.84
Final BW, kg	77.18b	79.13ab	80.70a	76.97b	79.53ab	0.84	0.02	0.43	< 0.01
ADG, g	707b	758ab	808a	700b	774ab	24	0.03	0.44	< 0.01
ADFI, kg	2.31	2.28	2.31	2.16	2.32	0.06	0.27	0.05	0.45
G:F	0.30	0.34	0.35	0.32	0.34	0.01	0.13	0.51	0.02

Data are the means of 6 replicates per treatment with 6 pigs per pen.

^a,bMeans with different superscripts within a row differ (P ≤ 0.05).