Merck Manual

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Estimated Average Daily Nutrient Requirements of Mature Horses and Ponies

Estimated Average Daily Nutrient Requirements of Mature Horses and Ponies

-------------------------------------Daily Nutrients Per Animala---------------------------------------------------

Body Weight (kg)

Digestible Energy (Mcal)

Crude Protein (g)

Ca (g)

P (g)

Vitamin Ab (IU)

Daily Milk Production (kg)

Maintenance

200

6.7

252

8

6

6,000

500

16.7

630

20

14

15,000

900

30.0

1,134

36

25.2

27,000

Last 90 Days of Gestation

214–226

7.7–8.6

319–357

14.4

10.5

12,000

500

19.2–21.4

797–893

36

26.3

30,000

600

34.6–38.5

1,434–1,607

64.8

47.3

54,000

Lactating Mares, First 3 Mo

200

12.2–12.7

587–614

22.4–23.6

14.4–15.3

12,000

6.0–6.5

500

30.6–31.7

1,468–1,535

55.9–59.0

36.0–38.3

30,000

15.0–16.3

900

52.4–54.4

2,642–2,763

100.6–106.4

64.9–68.9

54,000

26.91–29.3

Lactating Mares, 3 Mo to Weaning

200

10.9–12.2

506–587

15.0–22.4

9.3–10.5

12,000

4.4–6.0

500

27.2–30.6

1,265–1,468

37.4–55.9

23.2–36.0

30,000

10.9–14.9

900

46.3–52.5

2,277–2,642

67.4–100.6

41.8–64.9

54,000

19.6–26.9

a Assumes good-quality forage with or without additional concentrates. Maximal daily intake is estimated to be 2.5%–3.0% body wt in dry matter. Ranges are given for requirements that change with time of pregnancy/lactation.

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