. 2019 May 22;97(7):2901–2913. doi: 10.1093/jas/skz179

Table 2.

Effect of different levels of thyme essential oil and antibiotic on total performance of quail during 35 d rearing¹

Treatments	FI², g/d per bird	BWG², g/d per bird	FCR², g feed/g gain
Control	18.40^ab	6.29	2.92^ab
Antibiotic³	18.32^b	6.45	2.84^b
T200	18.61^a	6.14	3.03^a
T300	18.47^ab	6.20	2.98 ^a
T400	18.24^b	6.39	2.82^b
P-value⁴	0.035	0.168	0.009
SEM	0. 089	0.107	0.045
P-value for contrasts⁴
Control vs. antibiotic	0.951	0.785	0.623
Control vs. T200	0.373	0.780	0.372
Control vs. T300	0.962	0.945	0.829
Control vs. T400	0.619	0.958	0.479
Antibiotic vs. T200	0.116	0.191	0.028
Antibiotic vs. T300	0.650	0.363	0.140
Antibiotic vs. T400	0.950	0.990	0.997

¹All data are average of 5 replicates.

²FI = feed intake; BWG = BW gain; FCR = feed conversion ratio.

³Antibiotic is 100 ppm flavophospholipol. T200, T300, and T400 indicate the levels of 200, 300, and 400 ppm of Thymus vulgaris essential oil.

⁴Significance level (P < 0.05) by 95% confidence interval.

^abDifferent superscripts indicate significant differences (P < 0.05) within the same column.