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Relationship of Broiler Flock Numbers to Litter Microflora

Department of Poultry Science, Mississippi State University, Box 9665, Mississippi State, Mississippi 39762

Correspondence: Y. Vizzier Thaxton, E-mail: yvizzier{at}poultry.msstate.edu

Allowing litter to build up in broiler houses is a common practice. This practice is accompanied by changes in the birds' environment, such as increases in ammonia emissions and litter pH. In order to evaluate mechanisms for control of the environment, it is important to understand the microbiological population and its relationship to these changes. This study was designed to investigate the relationship of microbiological populations to the number of locks previously housed on the litter. Total numbers of aerobic and anaerobic bacteria, coliforms, Staphylococci, mold, and yeasts were determined. There was no correlation of flock numbers to any of the litter microbial populations.

Key Words: poultry litter • microflora • poultry • broiler