Table 3.

Phenotypic correlations (standard error) in the KKU1 (above diagonal) and KKU2 (below diagonal) chickens.

Traits	BW0	BW2	BW4	BW6	BrC6	ADG0–2	ADG0–4	ADG0–6
BW0	-	0.28 (0.05)	0.17 (0.05)	0.14 (0.03)	0.09 (0.04)	0.17 (0.02)	0.12 (0.02)	0.25 (0.03)
BW2	0.26 (0.04)	-	0.68 (0.01)	0.58 (0.00)	0.51 (0.04)	0.59 (0.01)	0.61 (0.03)	0.51 (0.03)
BW4	0.17 (0.01)	0.75 (0.01)	-	0.85 (0.00)	0.66 (0.01)	0.67 (0.02)	0.71 (0.01)	0.68 (0.08)
BW6	0.13 (0.05)	0.79 (0.02)	0.80 (0.01)	-	0.76 (0.02)	0.58 (0.01)	0.71 (0.02)	0.75 (0.09)
BrC6	0.10 (0.01)	0.50 (0.06)	0.64 (0.06)	0.71 (0.03)	-	0.62 (0.02)	0.73 (0.00)	0.81 (0.01)
ADG0–2	0.15 (0.01)	0.58 (0.01)	0.75 (0.05)	0.59 (0.05)	0.50 (0.02)	-	0.62 (0.01)	0.72 (0.01)
ADG0–4	0.10 (0.02)	0.65 (0.05)	0.77 (0.01)	0.79 (0.04)	0.63 (0.02)	0.56 (0.02)	-	0.75 (0.02)
ADG0–6	0.06 (0.01)	0.46 (0.05)	0.67 (0.05)	0.84 (0.01)	0.66 (0.01)	0.67 (0.02)	0.72 (0.01)	-

BW0 = birth weight (g); BW2, BW4, and BW6 = body weight at 2, 4, and 6 weeks of age (g), respectively; BrC6 = breast circumference at 6 weeks of age (cm); ADG0–2, ADG0–4, and ADG0–6 = average daily gain at 0–2, 0–4, and 0–6 weeks of age, respectively; KKU1 = crossbred chicken between commercial broiler and Thai indigenous synthetic chickens (Kaimook e-san1); KKU2 = crossbred chicken between Kaimook e-san2 and Kaimook e-san1 (both of which are Thai indigenous synthetic chickens).