2005•Applied Engineering in AgricultureRequires access

DOLOMITIC LIMESTONE BEDDING EFFECTS ON MICROBIAL COUNTS AND COW COMFORT

C. J. Clanton, M.I. Endres, Russell F. Bey, R. J. Farnsworth, K. A. Janni, David Schmidt

Abstract

The effects of dolomitic limestone (DL) on microbial counts (MC) and cow comfort were evaluated in a field study.A cooperating commercial dairy used DL bedding or sand bedding in freestall barns. Coliform bacteria counts in the top 3 cmof the surface of the DL bedding were approximately 15 times greater than bacteria counts observed in the top 3 cm of thesand bedding. However, in subsurface samples (below 3 cm), coliform bacteria counts in the sand bedding were greater thanthose found in DL bedding. Visual observations indicated that cows preferred sand bedding over the DL bedding used in thisfield study.

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Key concepts: Bedding, Animal science, Environmental science, Coliform bacteria, Veterinary medicine, Hydrology (agriculture), Bacteria, Geology