Complete Feeds, Ration Balancers, Supplements & Why the Differences Matter

A tale of two very different 450‑kg horses:

Every morning in the front paddock, two horses graze shoulder‑to‑shoulder. Both sit around 450 kg, both bays, both living on the same pasture under the same sky. From a distance, they look like a matched pair - same grass, same routine, same feed bucket.

But inside their bodies, they couldn’t be more different.

One is a solid Quarter Horse with metabolic syndrome. He gains weight on fresh air, carries a stubborn crest, and gets foot‑sore the moment the pasture flushes. His skin gets a little cranky in spring. He's the type who needs minerals without calories, magnesium without starch, and careful control of everything that might nudge his insulin higher. Too much sugar, too much starch, too many calories, even from “good” feeds, and he tips straight into trouble.

Standing right beside him is his paddock mate - an off‑the‑track Thoroughbred with a history of ulcers. Same weight, same grass, but a completely different engine. He burns through energy, drops condition quickly, and needs more protein, more calories, and more amino acids just to stay even. He can’t tolerate big, starchy feeds either, not because of insulin, but because his gut is sensitive. He needs steady calories, not sugar spikes; amino acids, not filler; and a feeding plan that keeps his stomach calm.

Two horses. Same paddock. Same grass. Same bodyweight.

And yet one needs less of almost everything, and the other needs more of almost everything, but in a very specific, gut‑friendly way.

This is where feeding gets complicated, and where the differences between complete feeds, ration balancers, and targeted supplements really start to matter. Bodyweight is not the only factor.

Complete feeds: great in theory, expensive in practice

“Complete feeds” are designed to be a full diet. To get the advertised vitamin and mineral levels, you must feed the full recommended rate, which is on average 3 - 4kg per day.

Once you feed a complete feed at the actual recommended rate, the monthly bill is rarely under $250–$300 for generic pellets, and often $400–$500+ for specialty or "performance" feeds. That’s before adding chaff, supplements, or extra calories from hay.

Most owners don’t realise this because they feed half a scoop or a token feed, assuming the horse is getting the full nutrient profile. But unless you feed the full rate, your horse is only getting a fraction of what the label promises.

Even though the bag is glossy, and has an equally shiny horse on the front, at less than the recommended rate, you will see signs of mineral deficiencies, and eventually the chronic conditions that follow. You can't feed a complete feed like a ration balancer.

For our hypothetical Quarter Horse, feeding the full rate would mean calories he can’t handle and starch he shouldn’t have.

For our OTTB, feeding the full rate might finally meet his needs, but at a cost that adds up fast. Potentially over $100/week just for pellets.

Also consider, many pellets, especially “complete feeds,” “cool feeds,” “pony pellets,” “horse & pony,” “conditioning,” and “all‑rounder” pellets, use grain-based ingredients because they are cheap, palatable, and easy to pellet.

Common high‑starch ingredients include: wheat, barley, maize/corn, millrun / bran (still grain-based, still fermentable, still starchy)

Even when the label doesn’t list the exact grain, anything described as: “cereal grains and by-products”, “grain and grain by-products”, “millmix / millrun” …is almost always starch-heavy, which will flare up his ulcers.

Ration balancers: concentrated, but not adjustable

Ration balancers are dense vitamin/mineral/protein pellets fed in cups, not scoops. They’re designed to top-up a forage‑based diet without adding calories.

But they come with their own traps. Again, you need to feed the exact recommended amount:

Underfeeding - your horse misses essential nutrients

Overfeeding - you can overshoot minerals like selenium, copper, zinc, iodine or phosphorus.

You can't feed a ration balancer like a complete feed.

Because balancers are concentrated, doubling the dose doesn’t “help more”, it can actually unbalance the diet. And like complete feeds, balancers are still fixed recipes. If your horse needs more copper but less phosphorus, you can’t adjust one without adjusting everything.

For the Quarter Horse, too much balancer can push minerals into unsafe territory, causing a whole raft of adverse effects.

For the OTTB, a balancer alone won’t come close to meeting his calorie or amino acid needs.

Even before you add a single pellet, whether that’s a complete feed or a ration balancer, your horse’s forage already has its own mineral profile, and that profile isn’t neutral. Pasture and hay can be high in iron, low in copper, wildly variable in zinc, and often short on magnesium, or a plethora of other possibilities.

When you tip a complete feed or ration balancer on top, you’re not starting from zero; you’re stacking a fixed recipe onto an existing pattern. That’s how you end up with ratios that can drift in the wrong direction.

Too much iron can block copper and zinc just as effectively as not having enough copper in the first place. Excess phosphorus can interfere with calcium absorption just as much as a deficiency. Even selenium or iodine, both essential in tiny amounts, causes as many symptoms in excess as it does when deficient.

This is why two horses on the same pasture can react so differently to the same pellet: the forage sets the baseline, and a one‑size‑fits‑all feed can easily tip one horse into “too much” while leaving the other still sitting in “not enough.”

Targeted supplements: feeding the horse in front of you

Targeted supplements let you correct exactly what your horse needs, and nothing they don’t.

This matters because two horses in the same paddock can have completely different requirements based on:

metabolic status

ulcer history

pasture type (especially oxalate grasses)

skin health

hoof quality

workload

age

hay type

A fixed pellet can’t adapt to those differences. A balancer can’t adapt either. But individual supplements can.

You can give our hypothetical Quarter Horse minerals without calories, and the OTTB calories without overshooting minerals. You can support each horse’s story without forcing them into the same script.

The Takeaway

Complete feeds only work when fed at full rates, which is expensive and often unsuitable for metabolic horses, or horses with a history of ulcers.

Ration balancers are useful but easy to overfeed, and still not adjustable.

Targeted supplements let you tailor nutrition to the horse in front of you, with full transparency and no wasted calories or ingredients.

Two horses can look the same on the outside and need completely different things on the inside, and your feeding approach should be able to reflect that.

Sound Advice Always Lets Your Horse Do The Talking

When we build diets together, everything is tailored to the horse standing in front of you, not the one imagined on the back of a feed bag.

Because we work with your existing diet, your horse’s history, and your goals, our clients almost always end up with lower feed bills overall, fewer ongoing problems, and horses that stay sounder, calmer, and healthier for longer. Much longer!

Precision nutrition isn’t complicated when someone walks you through it, and adjusting a diet is as simple as a quick message. Most owners check in with us whenever something changes; workload, pasture, seasons, hooves, skin, and together we make small, targeted tweaks that keep everything on track.

It’s easy to understand, easy to adjust, and it gives horses the kind of long, high‑quality life that only comes from feeding them exactly what they need.