Table 5. Effect of dietary energy levels and bedding materials on apparent total tract retention (ATTR) of nutrients in male and female slow-growing Korean meat-type chicken (Hanhyop 3)

Treatments			Nutrients ATTR (%)
Sex	Bedding	Energy	Dry matter	Protein	Fat	Total CHO	Crude ash
Male	Rice husks	High	81.39^a	70.49^a	89.61^bc	70.96^a	39.00^ab
	Rice husks	Low	80.99^ab	68.77^ab	92.94^a	70.89^a	38.09^ab
	Saw dust	High	78.28^c	64.14^bcd	87.43^c	65.65^b	32.12^b
	Saw dust	Low	81.12^ab	68.23^abc	91.70^ab	70.92^a	42.57^a
Female	Rice husks	High	79.44^abc	67.42^abcd	87.90^c	67.66^ab	31.91^b
	Rice husks	Low	79.68^abc	64.01^cd	92.25^ab	67.36^ab	33.90^b
	Saw dust	High	78.72^bc	64.59^bcd	90.27^abc	66.74^b	32.57^b
	Saw dust	Low	79.64^abc	63.09^d	92.74^ab	67.18^ab	35.24^ab
SEM			1.86	3.59	2.49	3.07	6.08
Main effect (P values)		Sex	0.063	0.004	NS	0.011	0.015
		Bedding	NS	0.014	NS	NS	NS
		Energy	0.035	NS	<0.0001	NS	NS
		S×B	NS	NS	0.034	NS	NS
		S×E	NS	0.013	NS	NS	NS
		B×E	NS	NS	NS	NS	NS

Abbreviations, CHO: Carbohydrate, S×B: Sex×Bedding, S×E: Sex×Energy, B×E: Bedding×Energy, NS: Not significant.
Means with different superscripts in the same row differ (P<0.05).