NUTRITIONAL REQUIREMENTS

Nutrient Requirements of Horses

Stallions Pregnant Mares Lactating Mares Working Horses Weanlings Yearlings Two-Year olds

Concentrate - to - Hay ration 30:70 20:80 to 30:70 35:65 to
50:50
35:65 to
65:35
70:30 60:40 to
50:50
35:65

Protein g/kg 80-96 100-106 110-132 98-114 145 126 104-113

Lysine g/kg 3.4 3.5-3.7 3.7-4.6 3.5-4.0 6.0-6.1 5.3 4.2-4.5

ME mj/kg 10.05 9.42-10.05 10.25-10.89 10.25-11.93 12.14 11.72 10.25-11.93

Calcium g/kg 2.9 4.3-4.5 3.6-5.2 3.0-3.5 5.6-6.8 4.3-4.5 3.1-3.4

Phosphorus g/kg 2.1 3.2-3.4 2.2-3.4 2.2-2.5 3.1-3.8 2.4-2.5 1.7-2.0

Magnesium g/kg 1.1 1.0-1.1 0.9-1.0 1.1-1.3 0.8 0.8 0.9-1.0

Potassium g\kg 3.6 3.5-3.8 3.3-4.2 3.7-4.3 3.0 3.0 3.0-3.2

Sodium g/kg 1.0 1.0 1.0 3.0 1.0 1.0 1.0

Sulpher g/kg 1.5 1.5 1.5 1.5 1.5 1.5 1.5

Iron mg\kg 40 50 50 40 50 50 50

Manganese mg/kg 40 40 40 40 40 40 40

Copper mg/kg 10 10 10 10 10 10 10

Zinc mg/kg 40 40 40 40 40 40 40

Selenium mg/kg 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Iodine mg/kg 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Cobalt mg/kg 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Vit A IU/kg 2000 3000 3000 2000 2000 2000 2000

Vit D IU/kg 300 600 600 300 800 800 800

Vit E IU/kg 50 80 80 80 80 80 80

Riboflavin mg/kg 2.0 2.0 2.0 2.0 2.0 2.0 2.0

Thiamine mg/kg 3.0 3.0 3.0 3.0 3.0 3.0 3.0

Source : National Research Council 1989 : Cheeke - Applied Animal Nutrition

	Stallions	Pregnant Mares	Lactating Mares	Working Horses	Weanlings	Yearlings	Two-Year olds
Concentrate - to - Hay ration	30:70	20:80 to 30:70	35:65 to 50:50	35:65 to 65:35	70:30	60:40 to 50:50	35:65

Protein g/kg	80-96	100-106	110-132	98-114	145	126	104-113
Lysine g/kg	3.4	3.5-3.7	3.7-4.6	3.5-4.0	6.0-6.1	5.3	4.2-4.5

ME mj/kg	10.05	9.42-10.05	10.25-10.89	10.25-11.93	12.14	11.72	10.25-11.93

Calcium g/kg	2.9	4.3-4.5	3.6-5.2	3.0-3.5	5.6-6.8	4.3-4.5	3.1-3.4
Phosphorus g/kg	2.1	3.2-3.4	2.2-3.4	2.2-2.5	3.1-3.8	2.4-2.5	1.7-2.0
Magnesium g/kg	1.1	1.0-1.1	0.9-1.0	1.1-1.3	0.8	0.8	0.9-1.0
Potassium g\kg	3.6	3.5-3.8	3.3-4.2	3.7-4.3	3.0	3.0	3.0-3.2

Sodium g/kg	1.0	1.0	1.0	3.0	1.0	1.0	1.0
Sulpher g/kg	1.5	1.5	1.5	1.5	1.5	1.5	1.5
Iron mg\kg	40	50	50	40	50	50	50
Manganese mg/kg	40	40	40	40	40	40	40
Copper mg/kg	10	10	10	10	10	10	10
Zinc mg/kg	40	40	40	40	40	40	40
Selenium mg/kg	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Iodine mg/kg	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Cobalt mg/kg	0.1	0.1	0.1	0.1	0.1	0.1	0.1

Vit A IU/kg	2000	3000	3000	2000	2000	2000	2000
Vit D IU/kg	300	600	600	300	800	800	800
Vit E IU/kg	50	80	80	80	80	80	80
Riboflavin mg/kg	2.0	2.0	2.0	2.0	2.0	2.0	2.0
Thiamine mg/kg	3.0	3.0	3.0	3.0	3.0	3.0	3.0
Source : National Research Council 1989 : Cheeke - Applied Animal Nutrition