Estimated Average Minimum Daily Nutrient Requirements of Mature (Over 3 to 4 Years of Age) Horses and Ponies
------------------------------Daily Nutrients Per Animala-------------------------------------------- | |||||
|---|---|---|---|---|---|
Body Weight, kg | Digestible Energy, Mcal | Crude Protein, g | Ca, g | P, g | Vitamin A, IUb |
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 months | |||||
200 | 12.2–12.7 | 587–614 | 22.4–23.6 | 14.4–15.3 | 12,000 |
500 | 30.6–31.7 | 1,468–1,535 | 55.9–59.0 | 36.0–38.3 | 30,000 |
900 | 52.4–54.4 | 2,642–2,763 | 100.6–106.4 | 64.9–68.9 | 54,000 |
Lactating mares, 3 months to weaning | |||||
200 | 10.9–12.2 | 506–587 | 15.0–22.4 | 9.3–10.5 | 12,000 |
500 | 27.2–30.6 | 1,265–1,468 | 37.4–55.9 | 23.2–36.0 | 30,000 |
900 | 46.3–52.5 | 2,277–2,642 | 67.4–100.6 | 41.8–64.9 | 54,000 |
Abbreviations: Ca, calcium; P, phosphorus. | |||||
Adapted from Nutrient Requirements of Horses. 6th ed. National Research Council. National Academies Press; 2007. | |||||
a Assumes good-quality forage with or without additional concentrates. Maximal daily intake is estimated to be 2.5–3.0% body weight in dry matter. Ranges are given for requirements that change with time of pregnancy/lactation. | |||||
b One mg of beta carotene equals 400 IU of active vitamin A for the horse. | |||||