. 2021 Jul 24;7(3):829–840. doi: 10.1016/j.aninu.2021.03.008

Table 3.

Effect of probiotics on the growth performance and immune organ indexes of broilers (n = 6/group).

Item	Treatments¹			SEM	P-value
Item	Control	BSC10	Lac16	SEM	P-value
Body weight, g
Day 1	47.89	47.82	48.07	0.49	0.34
Day 14	344.29	357.14	355.24	4.76	0.10
Day 21	637.88^b	659.85^ab	679.55^a	9.67	0.003
Day 42	2,030.87	2,069.44	2,071.30	24.28	0.47
Average daily gain, g/d
Day 1 to 14	22.80	23.79	23.63	0.34	0.07
Day 14 to 21	41.94^b	43.24^ab	46.33^a	1.12	0.001
Day 1 to 21	28.09^b	29.14^ab	30.07^a	0.47	0.02
Day 21 to 42	69.65	70.48	69.59	1.01	0.85
Day 1 to 42	48.11	49.09	49.1	0.56	0.46
Average daily feed intake, g/d
Day 1 to 14	39.30	39.45	40.37	0.46	0.22
Day 14 to 21	75.81	76.24	74.62	0.65	0.19
Day 1 to 21	52.14	52.27	52.45	0.33	0.84
Day 21 to 42	150.86	148.35	151.15	1.71	0.57
Day 1 to 42	104.43	103.54	104.01	1.60	0.94
Feed conversion rate
Day 1 to 14	1.72	1.66	1.71	0.03	0.28
Day 14 to 21	1.81^a	1.76^a	1.61^b	0.06	0.01
Day 1 to 21	1.86^a	1.79^ab	1.74^b	0.04	0.04
Day 21 to 42	2.17	2.10	2.17	0.03	0.27
Day 1 to 42	2.16	2.10	2.11	0.05	0.76
Spleen index
Day 14	0.86	0.68	0.92	0.08	0.054
Day 21	0.85	0.96	1.01	0.14	0.67
Day 42	1.30	1.14	0.92	0.14	0.12
Bursa of fabrieius index
Day 14	1.97	1.95	2.15	0.17	0.63
Day 21	1.87	2.49	2.21	0.28	0.27
Day 42	1.67	1.85	1.62	0.23	0.76

^{a, b} Mean values within a row with no common superscript differ significantly (P < 0.05).

Control: control group; BSC10: basal diet supplemented with Paenibacillus polymyxa 10 (1.0 × 10⁸ CFU/kg feed); Lac16: basal diet supplemented with Lactobacillus plantarum 16 (1.0 × 10⁸ CFU/kg feed).