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--------------------Daily Nutrients Per Animala-------------------
Age (mo)
Body Weight (kg)
Daily Gain (kg)
Digestible Energy (Mcal)
Crude Protein (g)
Ca (g)
P (g)
Vitamin Ab (IU)
Adult weight 200 kg (ponies)
4
67
0.34
5.3
268
15.6
8.7
3,000
6
86
0.29
6.2
270
15.5
8.6
3,900
12
128
0.18
7.5
338
15.1
8.4
5,800
18
155
0.11
7.7
320
14.8
8.2
7,000
24
172
0.07
308
14.7
8.1
7,700
Adult weight 500 kg (average horses)
168
0.84
13.3
669
39.1
21.7
7,600
216
0.72
676
38.6
21.5
9,700
321
0.45
18.8
846
37.7
20.9
14,500
387
19.2
799
37.0
20.6
17,400
365
18.7
770
36.7
20.4
19,300
Adult weight 900 kg (draft horses)
303
1.52
23.9
1,204
70.3
13,600
389
1.30
28.0
1,217
69.5
38.7
17,500
578
0.82
33.8
1,522
67.8
26,000
697
0.51
34.6
1,438
66.7
37.1
31,400
773
0.324
39.2
1,492
66.0
34,800
a Assumes good-quality forage with or without additional concentrates. Maximal daily intake is estimated to be 2.5%–3% body wt in dry matter.
b One mg of β-carotene equals 400 IU of vitamin A for the horse.
Adapted from Nutrient Requirements of Horses, 2007, National Academy of Sciences, National Academy Press, Washington, DC.