Table 7.

Effect of graded levels of guanidinoacetic acid (GAA) on tissue metabolite concentrations (Exp. 1)

Item	GAA, mg/kg					SEM	P-value
	0	300	600	900	1,200		ANOVA	Linear	Quadratic
Muscle
GAA, mg/kg	7.77	8.17	9.15	7.95	8.88	0.83	0.78	0.82	0.46
Creatine, mg/kg	2.88	2.91	2.97	2.80	2.86	0.11	0.85	0.65	0.72
Liver
GAA, mg/kg	2.36	2.22	2.14	2.04	2.27	0.29	0.95	0.42	0.98
Creatine, mg/kg	92.61	131.14	117.28	120.37	102.29	11.38	0.18	0.07	0.21
Kidney
GAA, mg/kg	139.16	153.28	130.01	133.57	128.80	9.43	0.41	0.73	0.58
Creatine, mg/kg	210.63	240.73	234.63	235.24	240.38	21.57	0.84	0.54	0.44

Data are the means of 6 replicates of 1 pig per pen.