Table 4.

Serum metabolites in broiler chickens fed diets supplemented with L-lysine.HCl and L-lysine sulfate.

Measurements1		Source of supplemental lysine			SE	Significance (P value)
	Day	Control#	L-lysine.HCl	L-lysine sulfate		Diet	Day	Diet-day
Total protein g/L	0	44.7	44.5	44.8
	40	36.1	38.2	34.8
	Trial mean	40.4	41.4	39.8	0.89	.634	.0001	.623
Albumin g/L	0	28.3	28.9	28.7
	40	18.3	18.8	14.5
	Trial mean	23.3	23.9	23.6	1.01	.618	.0001	.623
Globulin g/L	0	14.4	15.5	16.2
	40	17.8	19.4	18.9
	Trial mean	16.1	17.5	17.5	0.47	.412	.0001	.868
Creatinine μmol/L	0	60.8	54.8	57.3
	40	62.2	62.5	58.1
	Trial mean	61.5	58.3	57.7	3.73	.91	.634	.894
Uric acid μmol/L	0	390.8	396.4	394.6
	40	321.1	456.9	460.4
	Trial mean	360.9	426.7	427.5	9.78	.11	.911	.001
Urea—N m mol/L	0	4.77	4.61	4.61
	40	4.88	4.43	2.77
	Trial mean	3.83	4.52	3.69	0.27	.91	.634	.894
Glucose m mol/L	0	9.14	8.55	8.85
	40	8.17	8.32	8.82
	Trial mean	8.66	8.44	8.68	0.21	.112	.241	.762
Cholesterol m mol/L	0	4.48	4.23	4.73
	40	3.65	3.81	3.89
	Trial mean	3.57	4.05	4.31	0.14	.112	.178	.348
Chloride m mol/L	0	104.3	106.4	105.2
	40	101.3	100.9	98.8
	Trial mean	102.9	103.7	102.1	0.32	.105	.0001	.088

¹Mean value of 10 birds selected at random from the entire flock prior to the start of the experiment and then 10 birds selected randomly from each of the treatment group on day 40.

Means bearing dissimilar superscripts varied significantly.