Table 3.

Male (n = 42) and female (n = 42) body weight (BW, g), liver (% BW), and yolk Sac (% BW) at embryonic day (ED) 15 (A) and hatch (B) in meat-type chickens exposed to CON or CORT administered via injection into the chorioallantoic membrane at ED 11.

		ED 15		Hatch
Body and organ weights	Treatment	Male	Female	Male	Female
BW (g)	CON	16.24 ± 0.47ab	16.91 ± 0.39ab	49.68 ± 0.79	48.40 ± 0.69
	CORT	17.15 ± 0.36a	16.12 ± 0.38b	50.20 ± 0.71	49.22 ± 0.98
P value	Treatment	P = 0.883		P = 0.436
	Sex	P = 0.664		P = 0.197
	Sex × treatment	P = 0.040		P = 0.850
Liver % BW	CON	2.13 ± 0.06	2.06 ± 0.06	2.37 ± 0.06	2.54 ± 0.07
	CORT	2.03 ± 0.5	2.06 ± 0.05	2.43 ± 0.07	2.41 ± 0.06
P value	Treatment	P = 0.446		P = 0.671
	Sex	P = 0.729		P = 0.288
	Sex × treatment	P = 0.386		P = 0.149
Yolk sac % BW	CON	97.75 ± 6.68a	88.83 ± 6.40a	13.41 ± 0.57	13.28 ± 0.55
	CORT	115.65 ± 6.28b	109.87 ± 6.28b	13.78 ± 0.55	13.71 ± 0.67
P value	Treatment	P = 0.002		P = 0.498
	Sex	P = 0.221		P = 0.876
	Sex × treatment	P = 0.793		P = 0.962

Values are mean ± SEM.

^a,bMeans with different superscripts are significantly different between sex and treatment factors at the corresponding age.