Table 3. Age at first egg laying and egg production performance in Korean native commercial chicken combinations

Cross combinations	Age at first egg laying(days)	Hen-day egg production(Week 20~60, %)	Hen-housed egg production(Week 20~60, eggs)
YDYC	121.0±2.9	69.3±6.7^b	170.6±39.9
YDCK	122.3±1.0	73.1±6.9^ab	166.7±49.0
YDCF	120.2±2.8	78.1±3.2^a	192.0±18.2
YCCK	122.2±3.0	78.2±3.7^a	198.7±20.8
YCCF	121.3±2.6	75.3±3.4^ab	172.3±41.2
CKCF	121.0±2.2	69.5±8.5^b	179.8±30.7
Means	121.3±2.5	74.0±6.4	181.4±33.8

Values are mean±standard deviation.
The different letters of superscript within the column significantly differ (P<0.05).