Table 3. Hen-day egg production of broiler breeder hens fed graded levels of total lysine from 23 to 29 week of age¹⁾

Total lysine (%)	Daily lysine intake (mg/d)	Overall egg production (%)	Egg weight (g)	Egg mass (g/d)
0.55	732	31.4^a	49.6^a	16.54^a
0.59	785	34.6^ab	50.7^ab	19.11^b
0.63	838	37.2^ab	51.8^bc	20.61^b
0.67	891	37.3^ab	53.2^c	22.24^b
0.71	944	41.7^b	51.6^bc	24.60^c
0.75	998	41.0^b	51.2^b	23.26^bc
0.79	1,051	38.6^ab	53.3^c	22.34^b
SEM		1.01	0.28	1.11
p-value		0.008	0.001	0.009

Results are the mean of 6 replicates per treatment.
Means within the same column with no common script differ significantly (p < 0.05).
SEM, standard error of the mean.