Beet Pulp

Diffusion is a gentle process: it removes the sugar from the beet cell without destroying the cell wall around it. That is why beet pulp emerges as recognisable strips of intact structure rather than a mash, and why its composition is essentially the beet minus its sugar — a material rich in pectins, cellulose, and hemicellulose.

Molassed beet pulp is made by adding beet molasses back onto the pulp before or during drying. It is a deliberate product rather than a way of hiding a surplus: the molasses adds energy and palatability, binds dust, and helps the pellet hold together. Plain and molassed pulp are sold as separate goods, and the buyer chooses between them.

The pulp leaves diffusion carrying a great deal of water and is pressed. What happens next is one of the more consequential economic decisions a beet factory makes. Pressed pulp can be sold as it is to farms near the factory, where it is fed fresh or ensiled — cheap, but perishable, heavy, and viable only over a short radius. Or it can be dried and pelleted, which makes a dense, stable, storable product that can be shipped anywhere and traded internationally.

Drying is energy-intensive, and it is the reason beet pulp economics track energy prices closely. When energy is expensive, drying erodes the value it creates, and factories lean toward selling pressed pulp locally; when energy is cheap, the traded pellet is more attractive. The same pulp can therefore reach the market in quite different forms from one season to the next.

Beet pulp occupies a distinctive place in ruminant nutrition. Its energy is carried in highly fermentable fibre — chiefly pectin — rather than in starch, and rumen microbes ferment it readily without the rapid acid load that a starchy cereal produces. That gives feeders a way to add energy to a ration while keeping rumen conditions more stable than a cereal-based alternative would, which is why beet pulp has the informal reputation it does among nutritionists.

It is fed to dairy and beef cattle, to sheep, and — very commonly — to horses, where the same fermentable-fibre character suits the equine hindgut. Dried pulp takes up a great deal of water and swells substantially, a property that matters practically in how it is prepared and fed.

Buyers of dried pulp look at moisture, residual sugar, ash — which largely reports how much soil came in with the beet and survived washing — molasses content where the product is molassed, and pellet durability, since a pellet that turns to dust in transit is worth less on arrival. Pressed pulp is judged mainly on dry matter, freshness, and how well it was ensiled if it was.

Dried pellets store and ship like any dense feed pellet: kept dry, since they are hygroscopic and will swell, spoil, and mould if wetted, and watched for storage insects. Pressed pulp is the opposite — it is a perishable wet feed that must be fed or ensiled promptly, and it will not wait.