Asian-Australasian Journal of Animal Sciences

  • 제30권11호
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  • Pages.1660-1666
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  • 2017
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  • 1011-2367(pISSN)
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  • 1976-5517(eISSN)
아세아태평양축산학회 (Asian Australasian Association of Animal Production Societies)
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Comparison of bacterial communities in leachate from decomposing bovine carcasses

  • Yang, Seung Hak (Hanwoo Research Institute, National Institute of Animal Science, Rural Development Administration) ;
  • Ahn, Hee Kwon (Department of Animal Biosystems Science, Chungnam National University) ;
  • Kim, Bong Soo (Department of Life Science, Hallym University) ;
  • Chang, Sun Sik (Hanwoo Research Institute, National Institute of Animal Science, Rural Development Administration) ;
  • Chung, Ki Yong (Hanwoo Research Institute, National Institute of Animal Science, Rural Development Administration) ;
  • Lee, Eun Mi (Hanwoo Research Institute, National Institute of Animal Science, Rural Development Administration) ;
  • Ki, Kwang Seok (Hanwoo Research Institute, National Institute of Animal Science, Rural Development Administration) ;
  • Kwon, Eung Gi (Hanwoo Research Institute, National Institute of Animal Science, Rural Development Administration)
  • 투고 : 2017.07.26
  • 심사 : 2017.09.15
  • 발행 : 2017.11.01
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초록

Objective: Burial is associated with environmental effects such as the contamination of ground or surface water with biological materials generated during the decomposition process. Therefore, bacterial communities in leachates originating from the decomposing bovine carcasses were investigated. Methods: To understand the process of bovine (Hanwoo) carcass decomposition, we simulated burial using a lab-scale reactor with a volume of $5.15m^3$. Leachate samples from 3 carcasses were collected using a peristaltic pump once a month for a period of 5 months, and bacterial communities in samples were identified by pyrosequencing of the 16S rRNA gene. Results: We obtained a total of 110,442 reads from the triplicate samples of various sampling time points (total of 15 samples), and found that the phylum Firmicutes was dominant at most sampling times. Differences in the bacterial communities at the various time points were observed among the triplicate samples. The bacterial communities sampled at 4 months showed the most different compositions. The genera Pseudomonas and Psychrobacter in the phylum Proteobacteria were dominant in all of the samples obtained after 3 months. Bacillaceae, Clostridium, and Clostridiales were found to be predominant after 4 months in the leachate from one carcass, whereas Planococcaceae was found to be a dominant in samples obtained at the first and second months from the other two carcasses. The results showed that potentially pathogenic microbes such as Clostridium derived from bovine leachate could dominate the soil environment of a burial site. Conclusion: Our results indicated that the composition of bacterial communities in leachates of a decomposing bovine shifted continuously during the experimental period, with significant changes detected after 4 months of burial.

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