. 2021 Mar 4;7(2):488–495. doi: 10.1016/j.aninu.2020.07.008

Table 5.

Effects of dietary treatments on cumulative performance of broiler chickens¹.

Diet²	Treatment³	0 to 29 d			0 to 42 d
Diet²	Treatment³	BWG, g	FI, g	FCR⁴, g/g	BWG, g	FI, g	FCR, g/g	EPEF
PC		1,029	1,547	1.506^b	2,066	3,445	1.670^b	282^a
NC1		960	1,470	1.548^ab	1,948	3,275	1.688^ab	260^b
NC2		845	1,353	1.612^a	1,749	3,028	1.735^a	220^c
	-STBIO	846	1,348	1.604^a	1,764	3,044	1.729^a	230^b
	+STBIO	1,044	1,565	1.506^b	2,078	3,455	1.667^b	278^a
PC	-STBIO	991^b	1,514^bc	1.530	1,978^b	3,373^b	1.706	264
PC	+STBIO	1,068^a	1,580^ab	1.482	2,154^a	3,517^a	1.634	300
NC1	-STBIO	807^c	1,316^d	1.638	1,722^c	2,974^c	1.730	224
NC1	+STBIO	1,114^a	1,623^a	1.458	2,173^a	3,576^a	1.646	295
NC2	-STBIO	740^d	1,213^e	1.646	1,592^d	2,785^d	1.751	201
NC2	+STBIO	950^b	1,493^c	1.577	1,906^b	3,271^b	1.719	239
SEM		11	13	0.011	17	24	0.009	3
P-Diet		<0.001	<0.001	0.016	<0.001	<0.001	0.046	<0.001
P-Treatment		<0.001	<0.001	0.001	<0.001	<0.001	0.005	<0.001
P-Interaction		<0.001	<0.001	0.145	0.001	<0.001	0.581	0.060

BWG = body weight gain; FI = feed intake; FCR = feed conversion ratio; EPEF = European poultry efficiency factor; SEM = standard error of the mean.

^a–e Means with a different superscript letter differ (P < 0.05) based on t-test Student honestly significant difference test for the interaction.

Means were obtained from 8 replicate pens of 25 birds per replicate pen.

Diet: PC, positive control diet; NC1, negative control 1, with a 50 kcal/kg AME reduction; NC2, negative control 2, with 50 kcal/kg apparent metabolizable energy (AME) reduction and reducing amino acids by 3%.

Treatment: (−) is the control treatment; (+) is the basal diet supplemented with 100 g/tone of the stimbiotic (STBIO) a combination of xylanase and xylo-oligosaccharide.

⁴

Corrected for the weight of dead birds.