Merck Manual

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Estimated Daily Nutrient Requirements of Growing Horses and Ponies

Estimated Daily Nutrient Requirements of Growing Horses and Ponies

--------------------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

7.5

308

14.7

8.1

7,700

Adult weight 500 kg (average horses)

4

168

0.84

13.3

669

39.1

21.7

7,600

6

216

0.72

15.5

676

38.6

21.5

9,700

12

321

0.45

18.8

846

37.7

20.9

14,500

18

387

0.29

19.2

799

37.0

20.6

17,400

24

365

0.18

18.7

770

36.7

20.4

19,300

Adult weight 900 kg (draft horses)

4

303

1.52

23.9

1,204

70.3

39.1

13,600

6

389

1.30

28.0

1,217

69.5

38.7

17,500

12

578

0.82

33.8

1,522

67.8

37.7

26,000

18

697

0.51

34.6

1,438

66.7

37.1

31,400

24

773

0.324

39.2

1,492

66.0

36.7

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.