. 2023 Jan 15;12(1):201. doi: 10.3390/antiox12010201

Table 2.

Effects of dietary protected sodium butyrate (PSB) and/or olive leaf and grape-based by-product (OLG-mix) and their interaction on average daily gain (ADG, g), average daily feed intake (ADFI, g), and feed conversation ratio (FCR) in starter, grower, and finisher phases in broilers.

PSB (g/kg)	OLG-Mix (g/kg)	0–12 Days			13–28 Days			29–40 Days			0–40 Days
PSB (g/kg)	OLG-Mix (g/kg)	ADG	ADFI	FCR	ADG	ADFI	FCR	ADG	ADFI	FCR	ADG	ADFI	FCR
0	0	33.1 ^b	39.2	1.19 ^a	91.1	127	1.40	121 ^a	211	1.75 ^b	82.1	125	1.52
2	0	33.6 ^a	38.8	1.16 ^b	92.5	127	1.38	117 ^b	209	1.79 ^a	81.8	124	1.52
0	2	32.5 ^c	38.6	1.19 ^a	90.5	127	1.40	121 ^a	212	1.75 ^b	82.1	125	1.53
2	2	33.3 ^ab	38.5	1.16 ^b	91.9	127	1.38	117 ^b	210	1.80 ^a	81.3	124	1.53
Main effects
PSB
	0	32.8	38.9	1.19	90.8	127	1.40	121	211	1.75	82.1	125	1.53
	2	33.4	38.7	1.16	92.2	127	1.38	117	210	1.79	81.5	124	1.52
OLG-mix
	0	33.3	39.0	1.17	91.8	127	1.39	119	210	1.77	82.0	125	1.52
	2	32.9	38.6	1.17	91.2	127	1.39	119	211	1.77	81.7	125	1.53
SD ¹		0.936	1.109	0.023	3.627	3.075	0.040	6.454	6.378	0.074	1.479	2.355	0.021
p-value ²
General		0.0131	0.4172	< 0.0001	0.4605	0.9474	0.2641	0.1583	0.7201	0.1495	0.3700	0.369	0.858
PSB		0.0068	0.4712	< 0.0001	0.1376	0.9918	0.0507	0.0253	0.3038	0.0253	0.122	0.086	0.726
OLG-mix		0.0696	0.1472	0.5616	0.5563	0.5526	0.7688	0.8669	0.6128	0.8116	0.533	0.957	0.448
PSBxOLG-mix		0.5085	0.6575	0.7432	0.9912	0.9408	0.9314	0.7804	0.9401	0.6589	0.561	0.703	0.819

¹ SD: standard deviation (n = 30 replicates for each main effects, n = 15 replicates for the interaction). ² p: differences were statistically significant when p < 0.05; ^{a, b, c}. Letter with different superscript were statistically significant.