Equine nutrition coverage spotlights smarter supplement selection

A pair of protected sponsored articles in Equus and The Horse is spotlighting a perennial issue in equine care: how to choose vitamin and mineral supplements for horses without oversimplifying the ration. Although the full text isn’t publicly accessible, the article titles, sponsorship labels, and related published guidance suggest the coverage is aimed at helping readers distinguish between broad supplement categories, understand common forage-related gaps, and know when to bring in an equine nutritionist. (madbarn.com)

That focus reflects a broader shift in equine feeding advice over the past several years. Rather than recommending blanket supplementation, many nutrition resources now start with the base diet: hay, pasture, concentrate intake, workload, and life stage. Ohio State’s equine micronutrient guidance says horses get most nutrients from forage, but forage quality and mineral content vary with species, maturity, soil fertility, and weather, making testing central to decision-making. Rutgers’ forage analysis guidance similarly notes that published feed values can only estimate nutrient content, while laboratory analysis is needed to assess what a specific forage is contributing. (ohioline.osu.edu)

The practical question for clinicians and nutrition consultants is what kind of product is actually needed once the ration is assessed. In a 2024 The Horse commentary, equine nutritionist Clair Thunes, PhD, explained that ration balancers and concentrated vitamin-mineral supplements may provide similar trace-mineral levels per serving, but they differ in what else they deliver. Ration balancers typically contribute more macrominerals and protein because they’re fed in larger amounts, while concentrated supplements are designed to fortify forage-based diets in much smaller servings. That distinction matters when a horse doesn’t need extra calories, or when a pet parent is feeding less than the labeled minimum of a commercial concentrate. (thehorse.com)

Industry-sponsored educational content is also reinforcing that message. Mad Barn’s publicly available buyer’s guide says concentrated vitamin and mineral supplements are often used when horses are on forage-based diets or receiving low levels of grain, and it stresses attention to nutrient ratios such as calcium-to-phosphorus and zinc-copper-iron. A separate Sentinel-sponsored Equus article on feed value advises working with a veterinarian or equine nutritionist to identify what nutrients are missing, and warns that underfeeding a complete feed can create nutrient gaps that later get “patched” with supplements. Because both are sponsor-linked materials, they’re best read as commercially informed education rather than neutral comparative reviews, but their core recommendations align with independent extension and veterinary guidance. (madbarn.com)

Expert guidance remains cautious about assuming common supplement formats will solve the problem by themselves. AAEP-reviewed educational material says trace minerals support immune function, bone development, enzyme activity, and muscle function, and warns that deficiency or imbalance can affect health and performance. Ohio State adds that trace-mineral blocks often don’t supply enough minerals in a consistent enough amount to ensure adequacy or proper balance, because horses’ intake from blocks varies widely. In other words, “best supplement” claims are only meaningful if they’re matched to the rest of the ration and the horse’s actual intake. (aaep.org)

Why it matters: For veterinary professionals, especially those advising equine clients in primary care, sports medicine, reproduction, and ambulatory practice, this is less a product story than a workflow story. Nutrition questions increasingly land in the clinic, yet many horses arrive on layered feeding programs built from hay, pasture, partial concentrate servings, and multiple supplements. That raises the risk of both under-supplying key trace minerals and overcomplicating the diet with overlapping products. The most defensible clinical approach is to start with forage analysis, review actual daily intake against label directions, and then decide whether the horse needs a ration balancer, a concentrated vitamin-mineral supplement, or a full reformulation with nutritionist input. (esc.rutgers.edu)

There’s also a communication opportunity with pet parents. Sponsored articles on equine media sites can drive interest in supplements, but they can also create the impression that every horse needs the same add-on. Veterinarians are well positioned to reframe the conversation around measurable deficits, life stage, workload, regional forage variation, and safety. That’s particularly relevant for nutrients like selenium and other trace minerals, where both deficiency and excess can be concerns depending on geography and the total ration. (aaep.org)

What to watch: Expect more sponsored educational content and more “ration balancing” tools aimed directly at horse-feeding decisions, but the clinically important next step will remain the same: pairing those tools with forage testing, independent ration review, and case-by-case veterinary oversight. (madbarn.com)