HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Interpretive Summary Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Hogan, J. S. Articles by Petersson-Wolfe, C. S. Search for Related Content PubMed PubMed Citation Articles by Hogan, J. S. Articles by Petersson-Wolfe, C. S.

Bacterial Counts in Organic Materials Used as Free-Stall Bedding Following Treatment with a Commercial Conditioner¹

Department of Animal Sciences, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster 44691

¹ Corresponding author: hogan.4{at}osu.edu

An acidic conditioner was tested in recycled manure and sawdust used as free-stall bedding to determine the effect on bacterial counts of common environmental mastitis pathogens. Free stalls were bedded with 10 kg of either kiln-dried sawdust or recycled manure per stall. All bedding was removed and fresh bedding was applied every 7 d. Approximately 1 kg of commercial bedding conditioner containing 93% sodium hydrosulfate (wt/wt) was spread evenly over bedding in the back one-third of each treated stall. Control bedding received no treatment. Cows were bedded on the same material for 3 consecutive weeks. After 3 wk on a bedding treatment, cows remained in the same pens and bedding treatments were changed between rows within pens in a switchback design. The addition of bedding conditioner to sawdust reduced gram-negative bacterial, coliform, Klebsiella spp., and streptococcal counts immediately after application and 1 d after application. Bacterial counts did not differ between treated and untreated sawdust on d 2 and 6 after the conditioner treatment. Each bacterial count measured was reduced in recycled manure immediately after application. Gram-negative bacterial and streptococcal counts were reduced in treated recycled manure compared with untreated recycled manure on d 1 after conditioner was applied. Bacterial counts did not differ between treated and untreated recycled manure bedding on d 2 and 6 after application in free stalls. The antibacterial activity of the conditioner was related to the pH of the bedding and was diminished by d 2 after application in both bedding types.

Key Words: bedding • bacterial count

This article has been cited by other articles:

				M. A. Munoz, G. J. Bennett, C. Ahlstrom, H. M. Griffiths, Y. H. Schukken, and R. N. Zadoks Cleanliness Scores as Indicator of Klebsiella Exposure in Dairy Cows J Dairy Sci, October 1, 2008; 91(10): 3908 - 3916. [Abstract] [Full Text] [PDF]

				M. A. Kristula, Z. Dou, J. D. Toth, B. I. Smith, N. Harvey, and M. Sabo Evaluation of Free-Stall Mattress Bedding Treatments to Reduce Mastitis Bacterial Growth J Dairy Sci, May 1, 2008; 91(5): 1885 - 1892. [Abstract] [Full Text] [PDF]

				S. Godden, R. Bey, K. Lorch, R. Farnsworth, and P. Rapnicki Ability of Organic and Inorganic Bedding Materials to Promote Growth of Environmental Bacteria J Dairy Sci, January 1, 2008; 91(1): 151 - 159. [Abstract] [Full Text] [PDF]

				M. Magnusson, B. Svensson, C. Kolstrup, and A. Christiansson Bacillus cereus in Free-Stall Bedding J Dairy Sci, December 1, 2007; 90(12): 5473 - 5482. [Abstract] [Full Text] [PDF]