. 2021 May 5;100(8):101231. doi: 10.1016/j.psj.2021.101231

Table 3.

Effects of different methionine levels and stocking density on growth performance of broilers from d 21 to d 42.

Stocking density	Methionine (%)	Body weight (kg/bird)	Daily feed intake (g/bird)	Daily weight gain (g/bird)	Feed conversion ratio	Mortality rate (%)
LSD	0.35	2.38	149.63	72.48	2.07	0.00^c
	0.40	2.35	148.68	73.85	2.01	0.00^c
	0.45	2.30	146.43	74.23	2.05	0.00^c
	0.50	2.30	139.11	68.60	2.05	0.00^c
HSD	0.35	2.22	140.02	65.75	2.13	7.14^a
	0.40	2.25	138.19	68.72	2.04	3.54^b
	0.45	2.28	132.59	65.90	2.07	0.00^c
	0.50	2.34	140.77	71.60	1.98	0.00^c
SEM	0.017	1.712	1.128	0.018	0.586
Main effect analysis
Stocking density	LSD	2.33	145.96^a	72.19^a	2.05	0.00
Stocking density	HSD	2.27	137.87^b	67.99^b	2.05	2.30
Methionine	0.35	2.30	144.82	69.11	2.10	2.68
	0.40	2.30	144.01	71.28	2.03	1.77
	0.45	2.29	139.51	69.60	2.06	0.00
	0.50	2.32	139.94	70.10	2.02	0.00
P-value
Stocking density × Methionine		0.189	0.382	0.125	0.660	<0.01
Stocking density		0.084	0.021	0.020	0.865	<0.01
Methionine		0.915	0.602	0.851	0.418	<0.01

Means in the same column lacking a common superscript differ (P < 0.05). The specific stocking density is:LSD 14 broilers/m², HSD 20 broilers/m².