. 2020 Nov 19;100(3):100840. doi: 10.1016/j.psj.2020.10.073

Table 4.

Effects of raising system and narasin on growth performance of broilers.

	System			Narasin		P-value
	FL	CM	PN	+	−	System	Narasin	Interaction
12dBW/(g)	441^b	441^b	461^a	443^b	453^a	<0.001	<0.001	0.270
23dBW/(g)	1,351^a	1,317^b	1,366^a	1,333^b	1,357^a	<0.001	<0.001	0.229
36dBW/(g)	2,509^a	2,473^b	2,527^a	2,492	2,514	<0.001	0.134	0.552
1∼12 d
ADG/(g/day)	32.8^b	32.8^b	34.4^a	32.9^b	33.8^a	<0.001	<0.001	0.274
FCR	1.131^a,b	1.121^b	1.136^a	1.133	1.126	0.029	0.142	0.587
ADFI/(g/day)	37.0^b	36.7^b	39.1^a	37.2^b	38.0^a	<0.001	<0.001	0.543
Survival rate/(%)	99.8	99.6	99.2	99.5	99.6	0.311	0.582	0.924
13∼23 d
ADG/(g/day)	82.7^a	79.7^b	82.3^a	80.9^b	82.2^a	<0.001	0.039	0.343
FCR	1.345	1.346	1.350	1.343	1.351	0.649	0.072	<0.001
ADFI/(g/day)	111.3^a	107.2^b	111.1^a	108.7^b	111.0^a	<0.001	<0.001	0.746
Survival rate/(%)	99.6	99.6	98.8	99.1	99.6	0.102	0.158	0.645
24∼36 d
ADG/(g/day)	89.1	88.9	89.3	89.2	89.0	0.905	0.822	0.889
FCR	1.804^a,b	1.788^b	1.827^a	1.782^b	1.832^a	<0.001	<0.001	0.974
ADFI/(g/day)	160.6^a,b	158.9^b	163.1^a	158.8^b	162^a	<0.001	<0.001	0.829
Survival rate/(%)	99.0	99.3	98.3	99.1	98.7	0.224	0.363	0.974
1∼36 d
ADG/(g/day)	68.4^a	67.4^b	68.9^a	67.9	68.5	<0.001	0.127	0.551
FCR	1.527^b	1.520^b	1.537^a	1.517^b	1.539^a	<0.001	<0.001	0.123
ADFI/(g/day)	104.4^b	102.4^c	105.9^a	103.0^b	105.4^a	<0.001	<0.001	0.727
Survival rate/(%)	98.4^a	98.5^a	96.4^b	97.7	97.9	<0.001	0.731	0.841

^a,bWithin a row, numbers with different superscripts differ statistically at P < 0.05.

Abbreviations: FL, flooring litter rearing; MC, multilayer cage rearing; PN, plastic net rearing; BW, body weight; ADG, average daily gain; ADFI, average daily feed intake; FCR, feed conversion ratio.

1n = 12 replications.