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How Much Should You Feed Your Horse? A Complete Guide

By Schneider Saddlery • February 20, 2026 • 8 min read

One of the most common questions horse owners ask is, "How much should I be feeding?" It sounds simple, but the answer depends on your horse's weight, age, activity level, health conditions, and even the quality of your hay. Getting it wrong — in either direction — can lead to serious health problems.

This guide breaks down the science-based approach to horse feeding using the same NRC (2007) standards that board-certified equine nutritionists rely on.

The Foundation: Forage First

Every horse's diet should be built on forage — hay, pasture, or a combination. The National Research Council recommends that horses consume a minimum of 1% of their body weight in forage per day, with most horses doing best at 1.5-2% of body weight.

For a 1,100 lb horse, that means:

  • Minimum forage: 11 lbs/day (1% of body weight)
  • Recommended forage: 16.5 - 22 lbs/day (1.5-2% of body weight)

Dropping forage below 1% of body weight is never recommended, even for overweight horses. Insufficient forage leads to gastric ulcers, behavioral issues, and colic risk.

Feeding by Activity Level

Your horse's workload determines how many calories they need beyond what forage provides. Here are the general forage-to-concentrate ratios recommended by the NRC:

Activity Level Forage % Concentrate % Example
Maintenance100%0%Pasture pet, retired horse
Light Work85%15%1-3 hrs/week trail riding
Moderate Work70%30%Regular training, local shows
Heavy Work60%40%5+ hrs/week competition
Very Heavy50%50%Racing, endurance, upper-level eventing

Adjusting for Body Condition

The Henneke Body Condition Scoring system (scale of 1-9) is the standard way to assess whether your horse is at a healthy weight. A score of 5-6 is ideal for most horses.

  • Easy keepers (BCS 7+): Reduce calories by 10-15%. Use low-NSC hay, replace grain with a ration balancer.
  • Hard keepers (BCS 3-4): Increase calories by 15-20%. Add fat sources like rice bran or oil. Rule out dental, parasite, or ulcer issues first.

The Importance of Weighing Hay

Hay flakes vary enormously — from 3 to 8 lbs per flake depending on the bale. "Two flakes twice a day" could mean 12 lbs or 32 lbs. That's a massive difference in calories.

Invest in a hanging fish scale ($10-15) and weigh several flakes from each new bale. This single step improves feeding accuracy more than any other.

Don't Forget Water and Salt

The average 1,100 lb horse needs 5-10 gallons of water daily, with heavily worked horses needing up to 15 gallons. Provide a white salt block plus loose salt in feed (1-2 oz/day for horses in work).

When to Recalculate

Revisit your horse's feeding plan when:

  • Seasons change (horses need 15-20% more calories in winter)
  • Workload increases or decreases
  • You switch to a new hay source
  • Your horse gains or loses weight
  • Pregnancy or lactation stages change
  • New health conditions are diagnosed

At minimum, review the plan every 3-4 months.

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