Bacterial Counts Associated with Sawdust and Recycled Manure Bedding Treated with Commercial Conditioners
Open Access
- 1 August 1999
- journal article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 82 (8), 1690-1695
- https://doi.org/10.3168/jds.s0022-0302(99)75398-1
Abstract
Bacteria counts associated with untreated organic bedding materials were compared with those of bed- ding treated with either an alkaline commercial bed- ding conditioner, acidic commercial bedding condi- tioner, or hydrated lime. Bedding materials were recycled manure and kiln-dried sawdust. The effects of bedding treatments on bacteria counts differed be- tween bedding types. Each of the bedding treatments significantly reduced bacteria in recycled manure prior to use. The alkaline conditioner and hydrated lime effectively inhibited bacteria in recycled manure for 1 d. Bedding counts and teat swabs of cows housed on recycled manure treated with the alkaline condi- tioner were reduced on d 2. The use of the acid conditioner in recycled manure had little effect on bacteria in bedding. Sawdust differed from recycled manure in that bacteria in untreated sawdust prior to use were minimal, and populations increased rapidly during the first 2 d after use as bedding. The acid conditioner had a bacteriostatic effect in sawdust, evident by the reduction of bacteria on d 2. The alkaline conditioner and hydrated lime did not alter bacteria counts in sawdust compared with untreated sawdust. Antibacterial activity of each conditioner deteriorated between d 2 and d 6 in both beddings. The antibacterial activities of conditioners were related to the pH of bedding materials. The use of commercial bedding conditioners initially reduced bacterial counts; however, the antibacterial effects had diminished between d 2 and 6 after use in bed- ding.Keywords
This publication has 5 references indexed in Scilit:
- Bacteria Counts in Sawdust BeddingJournal of Dairy Science, 1997
- Bacterial Counts Associated with Recycled Newspaper BeddingJournal of Dairy Science, 1990
- Coliform Counts in Various Bedding MaterialsJournal of Dairy Science, 1982
- Primary Klebsiella identification with MacConkey-inositol-carbenicillin agarApplied and Environmental Microbiology, 1978
- Microbial Populations of Teat Ends of Dairy Cows, and Bedding MaterialsJournal of Dairy Science, 1975