. 2020 Oct 6;99(12):6606–6618. doi: 10.1016/j.psj.2020.09.082

Table 4.

Effects of different treatments on growth performance of SPF chickens.

Stage	Indicator	Control	CP	CA	CA + CP	AB	AB + CP	SEM	P-value
Day 1–14	ADG(g)	4.98^c	4.36^d	5.35^a	5.10^b	5.27^a	5.13^b	0.057	<0.001
	ADFI(g)	8.38^b	8.43^b	8.40^b	8.22^c	8.77^a	8.41^b	0.051	<0.001
	F/G	1.68^b	1.93^a	1.57^c	1.61^c	1.66^b,c	1.64^b,c	0.030	<0.001
	Survival rate (%)	100	94	100	100	100	100	1.000	0.416
Day 14–17	ADG(g)	9.38^d	9.04^e	9.77^a	9.53^c	9.72^b	9.49^c	0.022	<0.001
	ADFI(g)	20.09^a,b	20.15^a,b	19.81^b	19.75^b	20.36^a	20.09^a,b	0.222	0.114
	F/G	2.14^b	2.23^a	2.03^c	2.07^c	2.09^b,c	2.12^b,c	0.024	<0.001
	Survival rate (%)	100	98	100	100	100	100	0.333	0.416
Day 17–21	ADG(g)	12.04^c	9.97^f	12.36^a	11.81^d	12.11^b	10.77^e	0.016	<0.001
	ADFI(g)	27.04^a	24.74^b,c	24.26^c	23.90^c	24.25^c	24.89^b	0.259	<0.001
	F/G	2.26^c	2.48^a	1.97^e	2.03^d	1.99^d,e	2.32^b	0.027	<0.001
	Survival rate (%)	100	98	100	100	100	100	0.043	0.416
Day 1–21	ADG(g)	6.95^c	6.10^e	7.32^a	7.01^c	7.21^b	6.83^d	0.039	<0.001
	ADFI(g)	13.61^a	13.21^c	13.05^e	12.85^d	13.37^b	13.22^c	0.070	<0.001
	F/G	1.96^b	2.17^a	1.78^d	1.83^c	1.86^c	1.94^b	0.020	<0.001
	Survival rate (%)	100	92	100	100	100	100	1.333	0.416

In the same line, the same letter superscripts mean no significant difference (P > 0.05), and the different letter superscripts mean significant difference (P < 0.05).

Abbreviations: AB, antibiotic group; AB + CP, antibiotic + C. perfringens group; ADFI, average daily feed intake (g/head/d); ADG, average daily gain (g/head/d); CA, chlorogenic acid group; CA + CP, chlorogenic acid + C. perfringens group; CP, Clostridium perfringens group; F/G, feed to gain ratio; specific-pathogen-free; SR, survival rate.