. 2021 Mar 15;7(3):773–791. doi: 10.1002/vms3.412

Table 2.

Effect of antibiotic and microbial based administration in Cobb and Arbor acres broilers experimentally infected with Cl. perfringens on body weight changes (BW) and feed intake (FI)

Items	Cobb Breed					Arbor acres Breed
Items	IA	IB	IC	ID	Overall mean	IIA	IIB	IIC	IID	Overall mean
BW 1st week	167.44^a ± 2.81	165.78^a ± 3.31	171.55^a ± 0.22	166.99^a ± 4.56	167.94^A ± 1.49	166.89^a ± 6.44	159.78^a ± 4.41	163.03^a ± 5.27	167.55^a ± 3.95	164.31^A ± 2.37
BW 2nd week	425.56^b ± 4.81	416.84^b ± 8.25	435.80^ab ± 11.42	457.78^a ± 4.43	433.99^A ± 5.67	418.33^b ± 10.09	413.49^b ± 11.53	414.16^b ± 14.50	433.17^ab ± 10.34	419.79^A ± 5.55
BW 3rd week	777.02^ab ± 9.80	759.01^b ± 7.45	822.11^ab ± 36.75	839.57^a ± 20.83	799.43^A ± 13.60	846.07^a ± 7.54	819.80^ab ± 21.67	834.82^ab ± 37.47	800.03^ab ± 21.77	825.18^A ± 11.68
BW 4th week	1,072.85^b ± 58.27	1,066.24^b ± 16.64	1,313.94^a ± 73.39	1,168.02^ab ± 14.97	1,155.26^A ± 36.50	1,235.90^a ± 28.73	1,170.25^ab ± 50.22	1,299.58^a ± 35.59	1,198.37^ab ± 41.98	1,226.03^A ± 22.43
BW 5th week	1546.80^a ± 90.27	1,485.27^a ± 84.52	1711.82^a ± 144.17	1599.86^a ± 62.56	1585.94^A ± 49.47	1637.38^a ± 46.23	1609.59^a ± 10.36	1641.33^a ± 70.01	1632.67^a ± 113.05	1,630.24^A ± 0.32
FI 1st week	153.22^a ± 3.53	140.33^ab ± 2.17	154.11^a ± 4.33	145.19^ab ± 5.82	148.21^A ± 2.48	146.33^ab ± 0.88	136.28^b ± 4.54	154.06^a ± 8.07	148.44^ab ± 3.53	146.27^A ± 2.87
FI 2nd week	325.44^ab ± 2.95	317.67^bc ± 2.14	339.22^a ± 8.81	339.64^a ± 5.16	330.49^A ± 3.65	319.67^bc ± 4.51	302.15^c ± 2.55	328.74^ab ± 10.89	320.33^bc ± 0.19	317.72^B ± 3.89
FI 3rd week	575.87^ab ± 5.93	541.33^b ± 5.57	583.44^ab ± 15.53	603.07^a ± 7.86	575.93^A ± 7.88	588.53^a ± 7.29	581.60^ab ± 16.41	593.72^a ± 27.19	616.53^a ± 10.97	595.10^A ± 8.33
FI 4th week	1,130.95^a ± 103.28	985.73^a ± 46.83	1,144.18^a ± 58.75	1,070.23^a ± 61.27	1,082.77^A ± 35.61	1,047.08^a ± 102.97	1,135.59^a ± 16.30	1,161.62^a ± 38.40	1,045.38^a ± 45.59	1,097.418^A ± 30.02
FI 5th week	1,452.67^a ± 7.54	1,475.13^a ± 81.51	1,446.00^a ± 12.86	1,417.33^a ± 16.34	1,447.78^A ± 19.05	1,424.78^a ± 13.80	1,459.27^a ± 79.45	1,389.70^a ± 20.38	1,380.57^a ± 84.87	1,413.58^A ± 27.02
TFI	3,638.15^a ± 115.70	3,460.20^a ± 30.41	3,666.95^a ± 35.66	3,575.46^a ± 54.39	3,585.187 ^A ± 37.63	3,526.40^a ± 103.86	3,614.89^a ± 57.86	3,627.84^a ± 69.98	3,511.26^a ± 137.32	3,570.097^A ± 44.34

Small letters are significantly different between treated and untreated groups (p ≤ .05), while Capital letters significantly differ among different breeds.