Table 2.

Effect of dietary supplementation with heat-inactivated compound probiotics on the growth performance in yellow-feathered broilers.

Item	Treatment1
	NC	PC	BFI
Initial BW, g	36.56 ± 0.51	36.91 ± 0.31	36.69 ± 0.52
Final BW, g	1603.89 ± 41.31	1624.97 ± 7.20	1616.63 ± 19.21
ADG, g/d
1–21 d	16.93 ± 0.59	17.23 ± 0.21	16.59 ± 0.11
22–42 d	31.86 ± 0.98	31.77 ± 0.27	30.79 ± 0.42
43–63 d	27.09 ± 1.11	27.19 ± 1.16	27.57 ± 1.13
1–63 d	25.68 ± 0.64	25.31 ± 0.80	25.33 ± 0.23
ADFI, g/d
1–21 d	26.32 ± 0.25	26.60 ± 0.40	26.86 ± 0.28
22–42 d	69.03 ± 1.84	67.09 ± 0.37	64.77 ± 0.86
43–63 d	81.67 ± 2.11	77.33 ± 2.70	76.73 ± 0.29
1–63 d	58.97 ± 1.39	58.05 ± 0.41	56.21 ± 0.56
FCR
1–21 d	1.56 ± 0.06	1.54 ± 0.01	1.62 ± 0.01
22–42 d	2.16 ± 0.02	2.11 ± 0.03	2.10 ± 0.03
43–63 d	3.02 ± 0.06	2.86 ± 0.16	2.79 ± 0.11
1–63 d	2.30 ± 0.01a	2.29 ± 0.02a	2.21 ± 0.02b

¹NC, negative control without in-feed antibiotics; PC, positive control containing 200 mg/kg with oxytetracycline calcium + 250 mg/kg of nasiheptide; BFI, compound probiotics supplementation at 500 mg/kg containing heat-inactivated Bacillus subtilis and Lactobacillus acidophilus BFI at a ratio of 1:1.

^a,bMeans in the same row with different superscripts differ (P < 0.05).