Table 1.

The Organo-somatic index of pre-hatch and post-hatch broiler chicken. Data are presented as mean ± SEM

Days	Mean body weight (g)	Mean bursa weight (g)	Burso-somatic indices
ED 14	9.41 ± 0.31	0.02 ± 0.00	0.19 ± 0.05a
ED 17	24.12 ± 1.37	0.17 ± 0.14	0.77 ± 0.65b
ED 19	26.72 ± 0.42	0.03 ± 0.00	0.11 ± 0.01ac
PD 1	39.78 ± 0.60	0.05 ± 0.01	0.12 ± 0.01ac
PD 3	65.68 ± 2.70	0.10 ± 0.00	0.16 ± 0.01ac
PD 5	101.23 ± 3.43	0.24 ± 0.02	0.24 ± 0.03ac
PD 7	148.63 ± 5.71	0.40 ± 0.05	0.27 ± 0.04abc
PD 11	210.46 ± 12.41	0.42 ± 0.05	0.20 ± 0.03ac
PD 14	299.31 ± 15.89	0.53 ± 0.03	0.18 ± 0.01ac
PD 21	537.18 ± 40.48	0.98 ± 0.15	0.18 ± 0.01ac
PD 28	933.33 ±66.67	1.18 ± 0.11	0.13 ± 0.00ac
PD 35	1,533.33 ± 176.38	1.50 ± 0.70	0.09 ± 0.03ac
PD 42	1,800.00 ± 230.94	2.21 ± 0.95	0.12 ± 0.04ac
PD 56	2,000.00 ± 57.74	1.15 ± 0.20	0.06 ± 0.01ac

ED: embryonic day, and PD: post-hatch day.

^abc Different superscripts in a column indicate significant differences across the groups (p < 0.05).