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Elimination of patogenic microoganisms in equine bedding through a composting system
Teixeira Neto Antonio Raphael...
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On equine industry, there are multiple problems related to waste management. Constant and direct contact can lead to human and animal health problems.and contribute to unhealthy conditions on facilities. Composting is a sustainable solution that is becoming very useful on biomass treatment. The aim of the present research was to check if higher temperature achieved in a composting system using saturated equine bedding, was sufficient for pathogenic microrganisms elimination. A composting system with 6 piles (1,80x1,90x2,10m) was done. Throughout the hole process (90 days) the temperature was daily monitored. For pathogenic bacteria analysis, total coliforms, termotolerants coliforms was determined by more probable number (NMP.g-1) (Kornacki & Johnson, 2001), and Salmonella sp detected by Andrews & Hammack (2007), method. Peak temperature (56,3oC) was reached in all piles at day 4, and remained elevated until day 18. At the beginning, termotolerants and total coliforms quantification was higher than 1,6 x103 NMP.g-1. At the end of composting process total coliforms results was lower than 0.53x103 NMP.g-1 and fecal coliforms lower than 1x103 NMP.g-1. These results are in accordance with Brazilian environmental normative instructions. Samonella sp isolates were not found in this experiment. In conclusion, equine bedding composting revealed to be a reasonable way of microbiologic control on farms.
References
- Kornacki, J.L., Johnson, J. L.Enterobacteriaceae, coliforms and Escherichia coli quality and safety indicators. In:Vanderzant, C., Splittstoesser, D.F. Compendium of methods for microbiological examination of foods. 4 ed. Washington: American Public Health Association, 2001, cap 8, p.62-82.
- Andrews, H., Hammack, T.S. Bacteriological analytical manual. 8 ed. New Hampshire: FDA, 2007. Available from: https://www.fda.gov/food/laboratory-methods-food/bam-chapter-1-food-samplingpreparation-sample-homogenate. Accessed on: August 1, 2023.
- Souza, H. D., Oliveira, E. L., Faccioli-Martins, P. Y., Santiago, L., Primo, A. A., Melo, M. D., & Pereira, G. A. C. Características físicas e microbiológicas de compostagem de resíduos animais. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2019,71, 291-302.
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About
Affiliation of the authors at the time of publication
1 UNIVERSITY OF BRASILIA, FAV/VTH, Brasília, Brasil ; 2 University of Brasilia, FAV/VTH, Brasilia, Brasil ; 3 University of Brasilia, FAV, Brasília, Brasil
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