Table: Nutrient Requirements of Laying Hens at Different Feed Intakes a

Nutrient Requirements of Laying Hens at Different Feed Intakes ^a

Pounds (approx.)/100 birds/day	18	20	22	24	26
Grams of feed/bird/day	80	90	100	110	120
*White-Egg Layers*
Protein	18.8	16.7	15.0	13.6	12.5
Arginine	0.88	0.78	0.70	0.64	0.58
Lysine	0.86	0.77	0.69	0.63	0.58
Methionine	0.38	0.33	0.30	0.27	0.25
Methionine + cystine	0.73	0.64	0.58	0.53	0.48
Threonine	0.59	0.52	0.47	0.43	0.39
Tryptophan	0.20	0.18	0.16	0.15	0.13
Calcium	4.12	3.67	3.30	3.00	2.75
Phosphorus, available	0.31	0.28	0.25	0.23	0.21
*Brown-Egg Layers*
Protein	22.5	20.0	18.0	16.4	15.0
Arginine	1.06	0.94	0.85	0.77	0.71
Lysine	1.05	0.93	0.84	0.76	0.70
Methionine	0.45	0.40	0.36	0.33	0.30
Methionine + cystine	0.89	0.79	0.71	0.65	0.59
Threonine	0.71	0.63	0.57	0.52	0.48
Tryptophan	0.24	0.21	0.19	0.17	0.16
Calcium	5.00	4.44	4.00	3.64	3.33
Phosphorus, available	0.38	0.33	0.30	0.27	0.25
^a Requirements are listed as percentages of diet.
Adapted, with permission, from Nutrient Requirements of Poultry, 1994, National Academy of Sciences, National Academy Press, Washington, DC.