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Nutrient Requirements of Poultry: Ninth Revised Edition, 1994
Nutrient and Estimated Requirement
Age Period (Days)
Response Criteria
Breed
References
0.76
28–35
Computer model
Not specified
Hurwitz et al., 1978
0.68
35–42
Computer model
Not specified
Hurwitz et al., 1978
0.69
42–49
Computer model
Not specified
Hurwitz et al., 1978
0.39
49–56
Computer model
Not specified
Hurwitz et al., 1978
0.86
1–21
Growth, feed efficiency
Broiler strain
Attia and Latshaw, 1979
0.90
1–21
Growth, feed efficiency
Cobb
Waldroup et al., 1979
0.80
8–21
Growth, feed efficiency
New Hampshire × Columbian
Robbins and Baker, 1980a
0.52
8–21
Growth, feed efficiency
New Hampshire × Columbian
Robbins and Baker, 1980a
0.55
8–21
Growth, feed efficiency
Hubbard
Robbins and Baker, 1980b
0.57
8–16
Growth, feed efficiency
New Hampshire × Columbian
Willis and Baker, 1980
0.70
35–42
Growth, feed efficiency
Cornish × White Plymouth Rock
Holsheimer, 1981
0.87, males
1–14
Growth, feed efficiency, feathering
White Mountain × Hubbard
Moran, 1981
0.92, females
1–14
Growth, feed efficiency, feathering
White Mountain × Hubbard
Moran, 1981
0.81, males
35–52
Growth, feed efficiency, feathering
White Mountain × Hubbard
Moran, 1981
0.82
1–21
Growth, feed efficiency
Cobb
Wheeler and Latshaw, 1981
>0.70–<0.76
21–42
Growth, feed efficiency
Cobb
Wheeler and Latshaw, 1981
0.65
8–16
Growth, feed efficiency
New Hampshire × Columbian
Willis and Baker, 1981a
0.50
7–17
Growth, feed efficiency
New Hampshire × Columbian
Baker et al., 1983
0.87
7–24
Growth, feed efficiency
New Hampshire × Columbian
Baker et al., 1983
0.80
1–21
Growth, feed efficiency
Hubbard
Mitchell and Robbins, 1983
0.72
21–42
Growth, feed efficiency
Hubbard
Mitchell and Robbins, 1983
0.77
7–21
Growth, feed efficiency
Broiler strain
Thomas et al., 1985
0.78
21–42
Growth, feed efficiency, carcass fat
Peterson × Arbor Acres
Jensen et al., 1989
Phenylalanine + tyrosine, %
1.6
10–20 or 40
Growth
Not specified
Almquist, 1947
=1.0
4–10
Growth, feed efficiency
New Hampshire × Columbian
Fisher et al., 1957
1.30
8–13 or 15
Growth, feed efficiency
New Hampshire × Columbian
Klain et al., 1960
1.31
8–16
Growth, feed efficiency
New Hampshire × Columbian
Dean and Scott, 1965
0.87
8–14
Growth, feed efficiency
New Hampshire × Columbian
Sasse and Baker, 1972
1.09–1.12
14–28
Total protein efficiency
Ross
Woodham and Deans, 1975
0.95
8–16
Growth, feed efficiency
New Hampshire × Columbian
Baker et al., 1979
Threonine, %
0.60
10–20
Growth, feed efficiency
Not specified
Almquist, 1947
0.45
1–14
Growth, feed efficiency
White Leghorn
Grau, 1947
0.55–0.60
7–21
Growth, feed efficiency
Barred Plymouth Rock
Krautmann et al., 1958
0.58
7–14
Growth, feed efficiency
Not specified
Klain et al., 1960
0.65
7–14
Growth, feed efficiency
New Hampshire × Columbian
Dean and Scott, 1965
0.70
1–18
Growth, feed efficiency
New Hampshire × White Leghorn
Bhargava et al., 1971
0.53
7–21
Growth, feed efficiency
Broiler strain
Hewitt and Lewis, 1972
0.52
14–28
Growth, feed efficiency
Not specified
Woodham and Deans, 1975
0.80
7–14
Computer model
Not specified
Hurwitz et al., 1978
0.71
14–21
Computer model
Not specified
Hurwitz et al., 1978
0.71
21–28
Computer model
Not specified
Hurwitz et al., 1978
0.67
28–35
Computer model
Not specified
Hurwitz et al., 1978
0.60
35–42
Computer model
Not specified
Hurwitz et al., 1978
0.60
42–49
Computer model
Not specified
Hurwitz et al., 1978
0.64
49–56
Computer model
Not specified
Hurwitz et al., 1978
0.73–0.75
1–21
Growth, feed efficiency
ISA JV 715
Uzu, 1986
0.68
22–42
Growth, feed efficiency
ISA JV 715
Uzu, 1986
0.85
3–14
Growth, feed efficiency (adjusted to 23% crude protein
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