Abstract: An animal feed supplement that provides good nutrition is prepared as a homogenous, non-tacky, substantially solid mass. The supplement contains yeast having fermenting activity, a texturizing component selected from ground meal, ground legumes or mixtures thereof, a mineral mixture, a liquid binder, a vitamin mixture, and ground montmorillonite. The yeast is mixed with the texturizing component. This mixture is mixed with the mineral mixture followed by impregnating the resultant mixture with the liquid binder. The resultant mixture is then mixed with the vitamin mixture whereby the vitamin mixture is encapsulated, and the encapsulated vitamin mixture is mixed with the ground montmorillonite.