Table 3.

Effect of different stocking densities and concentrations of dl-methionine supplementation on plasma indicators of broilers¹

Density	Normal		High			P-value
Methionine	100%	130%	100%	130%	SEM	Density	MET	Interaction
ALT, U/L
Grower	0.82	0.76	0.75	0.72	0.08	0.55	0.60	0.88
Finisher	0.92	1.04	0.86	1.03	0.11	0.78	0.24	0.82
AKP, U/mL
Grower	284b	287b	251b	455a	31.8	0.05	<0.01	<0.01
Finisher	324	370	314	328	23.0	0.29	0.22	0.51
PIP, mg/dL
Grower	68.3	70.6	69.2	67.3	1.24	0.34	0.87	0.09
Finisher	55.8	56.6	55.9	53.9	2.12	0.54	0.78	0.54
Glucose, g/L
Grower	2.94ab	2.81b	3.11a	2.73b	0.08	0.57	<0.01	0.14
Finisher	2.55	2.75	2.68	2.66	0.12	0.88	0.49	0.36
Uric acid, mmol/L
Grower	281	291	288	289	15.8	0.89	0.75	0.79
Finisher	238b	287a	267ab	298a	13.1	0.17	<0.01	0.51
TC, mg/dL
Grower	78.9b	89.4a	86.1ab	90.6a	2.46	0.12	<0.01	0.25
Finisher	75.6	71.8	74.4	74.7	2.14	0.69	0.42	0.33
TG, mg/dL
Grower	40.9a	31.7b	44.4a	40.6a	2.29	0.02	0.01	0.28
Finisher	35.0ab	40.0a	32.3b	37.7ab	2.00	0.23	0.02	0.93
NEFA, μmol/L
Grower	0.15	0.15	0.17	0.16	0.01	0.18	0.74	0.69
Finisher	0.13	0.13	0.12	0.11	<0.01	0.09	0.64	0.29

¹Data are expressed as means (n = 10). The main effects (the stocking density and concentration of supplemental dl-methionine) were analyzed by two-way ANOVA and Duncan’s multiple range test was used to compare the treatment means. Means in the same row without a common letter differ significantly (P < 0.05).