Some dairy producers feel that limestone reduces bacterial growth, but research does not support this idea. Rubber Mats Rubber mats are sometimes placed on top or embedded into a concrete stall base. They are uncomfortable to cows, and the underside of the mat can be a good environment for bacterial growth. Dairymen have seen an increased incidence of knee and leg abrasions with the use of rubber mats. Rice hulls provide a comfortable bedding for cattle.
Hulls are relatively inexpensive, easy to handle, and work well in liquid-manure handling systems.
The big disadvantage is that rice hulls readily support the growth of microorganisms that cause mastitis. It is shown to be a better medium for microbial growth than any of the more commonly used organic bedding materials. Kenaf Kenaf is used for dairy cattle bedding on a limited basis. This material has been used extensively in horse stalls and small animal cages. Kenaf can be effective dairy bedding in loose housing situations.