Table 3. Comparison of body weight between crossbred Korean native chickens and Hy-Line Brown from week 18 to 64

Period	Treatment¹													SEM²	P-value
Period	CFCK	CFYC	CFYD	CKCF	CKYC	CKYD	YCCF	YCCK	YCYD	YDCF	YDCK	YDYC	Hy-Line Brown	SEM²	P-value
Week 18—20	1,721.33^abc	1,630.00^abc	1,648.00^abc	1,803.86^c	1,683.43^abc	1,551.86^a	1,625.63^abc	1,629.67^abc	1,735.44^bc	1,593.7^ab	1,621.22^abc	1,659.89^abc	1,655.22^abc	7.613	<0.001
Week 24—28	2,217.89^ab	2,001.38^a	1,998.71^a	2,323.71^b	2,049.86^ab	1,988.71^a	2,101.5^ab	2,081.5^ab	2,088.44^ab	2,046.9^ab	2,144.89^ab	2,076.89^ab	2,183.44^ab	16.708	0.008
Week 32—64	2,168.11^ab	1,988.63^a	2,061.57^ab	2,223.43^b	2,061.57^ab	2,015.86^a	2,099.25^ab	2,013.33^a	2,134.11^ab	2,051.3^ab	2,084.11^ab	2,104.67^ab	2,084.22^ab	11.893	0.019
Week 18—64	2,106.78^ab	1,935.13^a	1,988.29^a	2,174.29^b	2,001.57^a	1,940.14^a	2,026.75^ab	1,964.67^a	2,065.67^ab	1,980.1^a	2,022.33^ab	2,032.00^ab	2,033.33^ab	10.344	0.001

Values in a row with different superscripts differ significantly (P<0.05).
C, D: Korean Rhode Island; F, K: Korean Leghorn; Y: Korean domestic chicken.
SEM, standard error of the means.