Table 5. Estimated dietary total lysine requirements and recommendations for broiler breeder hens from 23 to 29 weeks of age based on linear-plateau and quadratic-plateau regression analysis

Item	Requirement (%)	SE	R2 (%)	p-value	Recommendation (%)
Egg production rate
LP	0.68	0.035	77.76	< 0.001	0.73
QP	0.78	0.118	76.26	0.003
Settable egg production
LP	0.67	0.055	74.85	< 0.001	0.77
QP	0.87	0.370	72.28	< 0.001
Egg mass
LP	0.69	0.022	93.56	0.001	0.71
QP	0.73	0.045	92.76	0.001

SE, standard error; LP, linear-plateau regression analysis; QP, quadratic-plateau regression analysis.