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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
Methionine
0.38
0.33
0.30
0.27
0.25
Methionine + cystine
0.73
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
0.23
0.21
Brown-Egg Layers
22.5
20.0
18.0
16.4
1.06
0.94
0.85
0.71
1.05
0.93
0.84
0.76
0.45
0.40
0.36
0.89
0.79
0.65
0.57
0.24
0.19
0.17
5.00
4.44
4.00
3.64
3.33
a Requirements are listed as percentages of diet.
