. 2020 Nov 26;7:572142. doi: 10.3389/fvets.2020.572142

Table 5.

Effect of dietary probiotic (PROB) or probiotic/prebiotic/essential oil (PPEO) supplementation on broiler performance under a naturally occurring subclinical necrotic enteritis model¹.

	Dietary treatments²				Statistics
Item³	NC	PC	PROB	PPEO	SEM⁴	*P-value*
d 0–8
ADFI, g	26.87	26.46	27.53	27.42	0.31	0.077
ADG, g	21.46^b	21.71^b	22.87^a	22.74^a	0.23	<0.001
FCR, g/g	1.25^a	1.22^ab	1.20^b	1.20^b	0.01	0.051
d 9–14
ADFI, g	61.63^c	62.80^bc	65.54^ab	66.39^a	1.02	0.007
ADG, g	41.26^c	44.34^b	46.52^a	46.57^a	0.73	<0.001
FCR	1.49	1.42	1.41	1.43	0.02	0.119
d 0–14
ADFI, g	40.61^b	41.00^b	42.75^a	43.18^a	0.52	0.003
ADG, g	30.18^c	31.52^b	33.10^a	33.06^a	0.34	<0.001
FCR	1.34	1.30	1.29	1.30	0.02	0.109
d 15–28
ADFI, g	121.99	125.80	123.23	125.38	1.35	0.172
ADG, g	77.35^b	85.18^a	80.35^ab	83.68^a	1.79	0.020
FCR	1.58	1.48	1.54	1.50	0.03	0.121
d 29–42
ADFI, g	203.51	202.73	200.37	203.47	2.44	0.783
ADG, g	115.27	116.75	111.70	113.15	2.99	0.650
FCR	1.77	1.75	1.79	1.80	0.04	0.797
d 0–42
ADFI, g	116.60	118.47	116.35	119.43	1.33	0.338
ADG, g	73.69^b	77.61^a	75.00^ab	77.15^a	1.00	0.036
FCR	1.58^a	1.53^b	1.55^b	1.54^b	0.01	0.005

^a−c

In each column, means with the same letter are not significantly different (P < 0.05).

Data represent the mean value of 8 replicate pens of 30 birds.

Treatments include: NC (negative control): corn-soybean meal basal diet; PC (positive control): NC + 20 g virginiamycin (453 g Stafac^®20)/ton diet; PROB: NC + B. licheniformis spores at the level of 227 g/ton diet; PPEO: NC + 453 g/ton of a supplement containing B. licheniformis spores, mannan-oligosaccharides, β-glucans (1,3 and 1,6), capsaicin and curcuma.

ADFI, Average daily feed intake; ADG, average daily gain; FCR, feed conversion ratio.

⁴

SEM, Standard error of means.