Research has confirmed the ability of a urease inhibitor (Yucca schidigera extract) to reduce mortality.
In Mexico, in a test with Yucca schidigera extract fed to heavy broilers, general mortality was reduced from 27 % to 21 % and ascites related mortality reduced from 19 % to 14 %
In a British journal it was reported that Yucca schidigera reduces ammonia and H2S gas levels in "piggeries". Solids in slurry are broken down more quickly because the sarsaponin in Yucca increases bacteria. A surprising spin-off to this activity in the sludge is that sarsaponin also seems to act as a natural growth promoter, possibly by conditioning the absorbent cells in the gut and/or by reducing surface tension at the point of absorption.
A research project at Oregon State University determined that dietary Yucca schidigera extract reduces atmospheric ammonia in poultry and rabbit houses, and increases growth rate.
Another test performed on steers at Oregon State University showed a tendency for Yucca schidigera to reduce rumen ammonia levels, plasma ammonia levels, and plasma urea-N levels. This could lead to more efficient utilization of dietary nitrogen, particularly when high roughage diets with urea are fed.