Merck Manual

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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.