SOY HULLS

Soya Hull are a great substitute for Beet Pulp – they have a lower glycemic index and require less soaking.

Pellets are available in 20 kg bag and work well with our Dan Patch mineral

Fiber Max HX Fact Sheet

Fiber Max HX (Hay Extender):

This is simply soy hulls in a pellet form.

Why should I buy this product?

This is a revolutionary product. Soy hulls are a source of the so-called super fibers which are now being used to allow horses to get the energy they need without relying on sugar and starch. In fact, recent research at the U of C Davis Campus shows that relative to oats with a glycemic index of 100, soy hulls have virtually no glycemic index. This is good news, as we now have an ingredient that helps us get the rapidly available carbs that boost blood sugar and cause an insulinemic response under control.

The non fiber carbs are soluble fiber, not sugar and starch so at least it is friendly in the carb department. In fact, there is such a low sugar and starch level and, of course “NO” fructans as in grass hay & pasture. This feed would be ideal for horses with Cushings or insulin resistance.

The fiber is not stiffened, so while some soy hulls can be used to extend the hay supply, or as a concentrate replacement, you will still need some effective fiber with some texture or crunch, so feed long forage or hay cubes at all times to your horse at a minimum of 1.5% of body weight unless you’re on a senior horse feed program. The fiber in soy hulls is unique and much like the fiber in Beet Pulp, it has relatively high level of solubility. It absorbs water and holds water. This can actually be an advantage, but it does mean it should be fed wet. Soak it 2 parts water to 1 part pellets for 2 hours to make sure it is well hydrated, before feeding.

The fiber is not lignified, so it can be well digested in the hind gut. Because the fiber is digested slowly compared to fructans in grasses, and there are no fructans anyway, as we find on grasses, the final products of digestion are volatile fatty acids. These are acetic, proprioic and butyric acid, and especially gut friendly ones like acetate reduce the risk of lactic acid. Now we have a product that ferments slowly to hind gut friendly products. Grasses vary a lot in the amount of fructans which are polymers of the fructose sugar and glucose side chains that cannot be digested in the small intestine and end up in the hind gut where they can be a problem if too high. They ferment like a grain overload in that situation if too high.

What are they?

Soy hulls are the skin of the soybean seed, this is removed when the seeds are made into soybean meal and the oil extracted.  The residue is the hull and this has virtually no starch, and we have measured the sugars at less than 1.0% dry matter.  The horse can happily ferment the fiber in soy hulls rather well so they actually have a decent energy level. Our values range around 2.5 Mcals per kg compared to 2.85 for decent Oats.

Nutrient content?

Soy hulls vary a bit in protein, but 8% seems reasonable to use for a value. Calcium is about .5-.8% as fed and phosphorous is low at .08-.2%. It should be balanced in a program to see if it will work well for your horse. Energy is lower than grain but higher than hay, one of those in between feeds. Trace minerals are low as well, and magnesium is fine.

Horses with HYPP/EPSM (Hyperkalemic Periodic Paralysis), excess potassium, may really benefit because potassium is usually lower than hay, at 1-1.3% potassium. Lower potassium soy hulls may help the HYPP/EPSM horses where hay potassium is high. Potassium may need to be looked at if the main forage is high in potassium. Soaking hay and draining off water as per a Cushing’s horse or insulin resistance horse will lower potassium too.

PSSM (Poly Sacharide Storage Myopathy) horses should be able to consume this product without fear of bumping up blood sugar and in turn enhancing muscle glycogen synthesis aggravating this problem.