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TABLE A-14. RECOMMENDED NUTRIENT CONTENT OF DIETS FOR DAIRY COWS
(DRY MATTER BASIS)
Cow
weight
(lb)		 Milk
fat
%		 Weight
gain
lb/day		 Lactating cow diets
Milk yield, lb/day
900 5.0 0.5 14 29 44 58 74 Early
lact.
(weeks 0-3) 		Dry
pregnant
cows 		Maximum
tolerable
levels
1100 4.5 0.6 18 36 55 73 91
1300 4.0 0.7 23 47 70 93 117
1500 3.5 0.8 26 52 78 104 130
1700 3.5 1.0 29 57 86 114 143
Energy
  NEL Mcal/lb
  ME, Mcal/lb
  DE, Mcal/lb
  TDN, % of DM
Protein equivalent
  Crude protein, %
  UIP, %
  DIP, %
Fiber content (minimum)
  Crude fiber, %
  ADF, %
  NDF, %
  NDF, % in DM from forage
Ether extract (minimum), %
Added fat (maximum), %
Minerals
  Calcium, %
  Calcium, with added fat, %
  Phosphorus, %
  Magnesium, %
  Magnesium, with added fat, %
  Potassium, %
  Sodium, %
  Chloride, %
  Sulfur, %
  Iron, ppm
  Cobalt, ppm
  Copper, ppm
  Manganese, ppm
  Zinc, ppm
  Iodine, ppm
  Selenium, ppm
Vitamins
  Vitamin A, IU/lb
  Vitamin D, IU/lb
  Vitamin E, IU/lb
 
0.65
1.07
1.26
63
 
12
4.5
7.9
 
17
21
28
21
3
3-4
 
0.43
0.65
0.28
0.20
0.25
0.90
0.18
0.25
0.20
50
0.10
10
40
40
0.60
0.30
 
1450
450
7
 
0.69
1.16
1.35
67
 
15
5.4
8.8
 
17
21
28
21
3
3-4
 
0.53
0.70
0.34
0.20
0.25
0.90
0.18
0.25
0.20
50
0.10
10
40
40
0.60
0.30
 
1450
450
7
 
0.73
1.25
1.44
71
 
16
5.7
9.7
 
17
21
28
21
3
3-4
 
0.60
0.75
0.38
0.20
0.25
0.90
0.18
0.25
0.20
50
0.10
10
40
40
0.60
0.30
 
1450
450
7
 
0.78
1.31
1.50
75
 
17
6.0
10.4
 
15
19
25
21
3
3-4
 
0.65
0.80
0.42
0.25
0.30
1.00
0.18
0.25
0.20
50
0.10
10
40
40
0.60
0.30
 
1450
450
7
 
0.78
1.31
1.50
75
 
18
6.3
10.4
 
15
19
25
21
3
3-4
 
0.66
0.80-0.90
0.41
0.25
0.30
1.00
0.18
0.25
0.20
50
0.10
10
40
40
0.60
0.30
 
1450
450
7
 
0.76
1.27
1.46
73
 
19
7.2
9.7
 
17
21
28
21
3
3-4
 
0.77
0.90-1.00
0.49
0.25
0.30
1.00
0.18
0.25
0.25
50
0.10
10
40
40
0.60
0.30
 
1800
450
7
 
0.57
0.93
1.12
56
 
12
 
 
 
22
27
35
35
3
 
 
0.39
 
0.24
0.16
 
0.65
0.10
0.20
0.16
50
0.10
10
40
40
0.25
0.30
 
1800
540
7
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2.00
 
1.00
0.50
 
3.00
 
 
0.40
1000
10
100
1000
500
50
2.00
 
30000
4500
900

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