Table 5. Effect of stock density and nutrient levels on carcass, partial meat ratio and proximate analysis in Korean native chickens (d 70)

Treatment1		Carcass rate (%)	(g/BW 100g)			Proximate analysis (%)
SD	EL		Breast	Drumsticks	Abdominal fat	Dry mater	Crude protein	Crude fat
14 ×	Low	70.09	21.04	14.00	2.04	25.06	22.81	0.94
	High	71.47	21.44	14.35	2.15	24.90	23.18	0.89
16 ×	Low	69.49	20.16	13.64	2.05	24.05	23.03	1.03
	High	71.13	20.96	13.40	2.30	24.53	23.06	1.04
14		70.78	21.24	14.18	2.09	24.98	22.99	0.92
16		70.31	20.56	13.52	2.17	24.29	23.05	1.04
	Low	69.79	20.60	13.82	2.04	24.56	22.92	0.99
	High	71.30	21.20	13.88	2.22	24.71	23.12	0.97
SEM2		0.29	0.23	0.23	0.06	0.15	0.06	0.02
P-vlaue3
SD		0.433	0.157	0.170	0.170	0.551	0.028	0.025
EL		0.011	0.210	0.210	0.912	0.183	0.620	0.744
SD × EL		0.827	0.681	0.681	0.538	0.615	0.310	0.545

SD: stock density (birds/m²); EL: energy levels (ME kcal/kg): High: starter (3,150), grower (3,200), final (3,250); Low: starter (2,950), grower (3,000), final (3,050).
SEM: standard error of means.
SD: stock density; EL: energy levels; SD × EL: stock density × energy levels.