Table 4. Effect of dietary supplementation on growth performance and carcass characteristics (least-square means and SEM).

Performance	Control	Chitosan	SEM	P value
Dietary intake (kg/d)	2.99	2.67	0.05	0.001
Body weight gain (kg/d)	0.88	0.79	0.03	0.042
Feed efficiency ratio (kg/kg) ††	3.57	3.30	0.37	0.593
Carcass characteristics
Carcass weight (kg)	93.8	90.1	1.52	0.092
Kill-out proportion (%)	74.7	75.5	0.38	0.151
Back-fat depth (mm)	12.8	11.4	0.37	0.011
Fat content (kg)	36.4	33.6	0.74	0.012
Lean meat (%)	58.2	59.7	0.38	0.008
Loin eye muscle depth (mm)	55.3	57.5	1.39	0.258

SEM, standard error of mean.

^†† Body weight gain/ dietary intake.