Table 5.

Effect of dietary L-lysine·H₂SO₄ levels on serum chemistry of broiler chickens¹

Items	Dietary L-lysine·H2SO4 levels, %					SEM	P-value
	0	1	4	7	10		ANOVA	Linear	Quadratic
Albumin, g/L	11.1c	11.3c	12.3bc	14.5a	13.0b	0.38	<0.01	< 0.01	< 0.01
Total protein, g/L	23.7c	25.4bc	28.2ab	29.1a	27.7ab	0.79	< 0.01	< 0.01	< 0.01
Globulin, g/L	12.6	14.2	15.9	14.6	14.8	0.85	0.13	0.09	0.05
Alanine amino transferase, U/L	21.3ab	22.9ab	16.8b	31.6a	23.8ab	2.78	0.02	0.15	0.36
Aspartate amino transferase, U/L	65.3	86.9	69.6	68.6	95.1	7.24	0.06	0.18	0.33
Total bilirubin, μmol/L	19.4b	22.2b	22.7b	42.5a	20.6b	2.90	< 0.01	0.04	0.02
Creatinine, μmol/L	24.0	25.3	26.5	25.2	21.6	1.18	0.12	0.36	0.03
Uric acid, μmol/L	332.2	356.1	291.7	250.5	365.5	46.66	0.43	0.66	0.55
Lactic dehydrogenase, U/L	1508.0	1443.8	1567.5	1146.0	1792.7	182.12	0.24	0.84	0.52

¹Means in the same row with different superscripts differ from one another (P < 0.05). SEM standard error of the mean; n = 6/diet