Tomato pomace in ruminant rations: what the analysis tells you

Start with the form, not a presumed nutrient value

Tomato pomace is a processing co-product made up of varying proportions of tomato skins, seeds and pulp. That mix matters in a ruminant ration: a seed-rich lot and a peel-heavy lot are not interchangeable just because both are called tomato pomace. The physical form also changes how the material is stored, sampled and incorporated.

Dried tomato pomace is a feed ingredient with moisture removed; wet pomace retains substantial water from processing. Pomace-containing silage is different again: it is a fermented mixture, so the other ingredients and the ensiling process contribute to what the finished material contains. Treat each form as its own ingredient for analysis and formulation rather than assuming one analysis represents them all.

What fiber and composition tell the formulator

The peel, pulp and seed fractions contribute different characteristics. Peel and pulp contribute fibrous plant material, while seeds can contribute a different nutrient profile, including residual oil. Because the proportions vary, a single crude-protein or fiber result cannot describe every lot or explain every ration effect.

Fiber measures help a nutritionist understand how tomato pomace fits alongside the ration’s other fiber sources, but the result needs context. Ask which fiber measures were reported, whether values are on an as-fed or dry-matter basis, and whether the sample represents the product being offered. Dry-matter basis is especially important when comparing wet material with dried feed: water changes the concentration expressed per delivered weight, even when the dry portion is similar.

A broader analysis may also be relevant to the intended ration, including protein, fat, ash and energy-related measures. The nutritionist should determine which values are needed for the animal and complete diet. Do not infer a safe or effective inclusion rate from a single trial or from a headline nutrient value; formulation depends on the analyzed ingredient, the rest of the ration and the animals receiving it.

Wet pomace and pomace-containing silage are not the same

Wet pomace brings water into the ration and requires a plan for prompt receiving, use and storage appropriate to the material’s condition. Its delivered weight is not the same as its dry-matter contribution, so ration comparisons based only on as-fed weight can mislead. Moisture analysis helps the nutritionist and buyer assess how much dry ingredient is actually being handled.

Silage containing tomato pomace should be evaluated as the finished mixture, not as if it were unaltered wet pomace. The other forage or feed components, fermentation and storage conditions all affect the material presented to the animals. Request an analysis representative of the silage being fed and identify its ingredients; a separate pomace analysis does not, by itself, characterize the finished silage.

Match the analysis to the animals and the full ration

Before a nutritionist evaluates tomato pomace for ruminant feed formulation, define the animal group and production purpose, then review the complete ration. Cattle type, stage of production, current forage and concentrate ingredients, and the way the ration is delivered can all affect which ingredient values matter. A result that informs one ration is not automatically transferable to another.

For the offered material, establish its identity and form, the proportions of peel, seed and pulp if known, and the date and sampling basis of the analysis. For wet pomace or silage, moisture and the representative sampling plan are central. For dried feed, the nutritionist still needs a lot-relevant analysis; drying does not make variable raw-material composition uniform.

The useful question is not simply whether tomato pomace is “high” or “low” in one nutrient. It is how the analyzed lot contributes to the complete diet, including fiber and other nutrients, and whether its physical form fits the farm’s storage and feeding system. That assessment belongs with a qualified nutritionist using the intended animals and full ration.

Define the formulation requirements before sourcing

When comparing offers, specify whether the requirement is dried tomato pomace, wet pomace or pomace-containing silage. Share the quantity and unit, delivery destination, receiving constraints and expected timing, then identify the analysis and any composition details the nutritionist needs. Those details help distinguish an ingredient that fits the formulation from one that merely shares its name.

Once the intended form and analysis requirements are clear, visit the Tomato Pomace sourcing page to discuss the relevant bulk product. Exact composition and commercial terms depend on the specific offer and lot; assess them against the ration rather than assuming the product name guarantees a particular nutrient profile.

Common questions.