Coarser ground limestone such as screenings is more desirable. 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.