Table 4. Comparison of viability between crossbred Korean native chickens and Hy-Line Brown from initial to 12-week after hatching¹

Treatments	Viability (%)
	Initial	Week 2	Week 4	Week 6	Week 8	Week 10	Week 12
CFYD	100	99	97	97	97	94	91
YDCK	100	92	84	84	84	83	82
CKYC	100	99	99	97	97	97	92
CKCF	100	100	100	100	100	100	98
YCCK	100	93	93	93	93	62	55
CKYD	100	99	99	99	98	98	89
YCYD	100	99	97	97	97	95	92
YDCF	100	99	98	98	98	98	90
YCCF	100	91	83	83	83	66	63
YDYC	100	97	95	95	94	90	84
CFCK	100	100	100	100	100	100	90
CFYC	100	95	92	92	92	88	85
Hy-Line Brown	100	100	100	100	100	100	98

Before gender identification.