Merck Manual

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Recommended Nutrient Concentrations in Rations a for Horses and Ponies

Recommended Nutrient Concentrations in Rations a for Horses and Ponies

--------------------Example Diet Proportions---------------------

Hay Containing 2.0 Mcal DE/kgb

Hay Containing 1.8 Mcal DE/kgc

Digestible Energy (Mcal/kg)

Crude Protein (%)

Ca (%)

P (%)

Vitamin A (IU/kg)d

Concentrate (%)e

Roughage (%)

Concentrate (%)e

Roughage (%)

Mature horses and ponies, maintenance

1.80

7.2

0.21

0.15

1,650

0

100

0

100

Mares, last 90 days of gestation

2.15

9.5

0.41

0.31

3,280

20B

80

25A

75

Lactating mares, first 3 mo

2.35

12.0

0.47

0.30

2,480

40A

60

50A

50

Lactating mares, 3 mo to weaning

2.20

10.0

0.33

0.20

2,720

30B

70

40A

60

Stallions, breeding season

2.15

8.6

0.26

0.19

2,370

25A

75

30A

70

Creep fed

2.80

16.0

0.65

0.35

1,800

70A

30

Foal (3 mo old)

2.70

14.0

0.65

0.35

1,500

50A

50

70A

30

Weanling (6 mo old)

2.60

13.1

0.55

0.30

1,680

50A

50

60A

40

Yearling (12 mo old)

2.50

11.3

0.40

0.22

1,950

40B

60

50A

50

Long yearling (18 mo old)

2.35

10.4

0.32

0.18

2,050

30B

70

40B

60

2-yr-old (light training)

2.40

10.1

0.31

0.17

2,380

40B

60

50B

50

Mature working horses

Light workf

2.20

8.8

0.27

0.19

2,420

0–25B

75

25B

75

Moderate workg

2.40

9.4

0.28

0.22

2,140

40B

60

50B

50

Intense workh

2.55

10.3

0.31

0.23

1,760

50B

50

60B

40

a 90% dry matter

b Good quality legume-grass hay; DE = digestible energy

c Grass hay

d One mg of β-carotene equals 400 IU of vitamin A for the horse.

e Concentrate containing 3.2 Mcal DE/kg; A or B refers to suitable concentrates (see Table: Concentrates Satisfactory for Use with Hays as Indicated in ).

f Western pleasure, bridle path hack, equitation

g Ranch work, roping, cutting, barrel racing, jumping

h Race training, polo

Adapted, with permission, from Nutrient Requirements of Horses, 1989, National Academy of Sciences, National Academy Press, Washington, DC.