| Dehydrating and bacterial elimination effects of fecal dehydrating system for reducing bovine mastitis derived from environmental contamination |
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Dong Hyeok Kim1, Jung Ju Lim1, Jin Ju Lee1, Dae Geun Kim1, Hong Hee Chang2, Seung Joo Lee3, Yun Beom Lee4, Dong Il Chang4, Hu Jang Lee1, Won-Gi Min1, Sang Hun Kim3, Kwon Young Oh6, Suk Kim1 |
1College of Veterinary Medicine, Gyeongsang National University
2College of Agriculture & Life Science,Institute of Agriculture and Life Science, Gyeongsang National University
3Department of Bio-Industrial and Machinery, Chungnam National University
4Institute of Agriculture and Life Science, Gyeongsang National University
5Department of Bio-Industrial and Machinery
6College of Veterinary Medicine, Department of Agricultural Engineering, National Academy of Agricultural Science
7College of Veterinary Medicine, Gyeongsang National University, Department of Agricultural Engineering, National Academy of Agricultural Science |
| 환경유래 젖소유방염 저감을 위한 우분뇨 탈수 시스템의 탈수 및 유방염 원인체 제균 효과 규명 |
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김동혁1, 임정주1, 이진주1, 김대근1, 장홍희2, 이승주3, 이윤범4, 장동일4, 이후장1, 민원기1, 김상훈3, 오권영6, 김석1 |
1경상대학교 수의과대학
2경상대학교 농업생명과학대학,경상대학교 농업생명과학연구원
3충남대학교 농과대학
4경상대학교 농업생명과학연구원
5
6국립농업과학원 농업공학부
7 |
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| Abstract |
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Bovine mastitis is an important disease causing serious economic loss in dairy production and food poison in public health. Escherichia coli and Staphylococcus aureus are the major causative agents of bovine mastitis. These bacteria were found in milk and environmental condition such as feces, water, soil and so on. Bovine mastitis causative micro-organisms can survive in 1-2 weeks in feces and bed complexes. Low level of percentage of water content (PWC) of feces and bed complexes can reduce the spreading of bovine mastitis incidence from environmental contamination. In this study, we developed the fecal dehydrating system and determined the elimination rates of bovine mastitis causative agent from feces and bed complexes. To develop the fecal dehydrating system, the screw pressurized dehydrating system was used and the maximum rate of dehydrating was reached to 52% PWC using 90% PWC (wet base) of fecal and bed complexes. The elimination rates of the dehydrating system for E. coli and S. aureus were reached at 41.19 $pm$ 7.84% to 62.55 $pm$ 8.71% in various percentages of PWC of feces and bed complexes (80, 85 and 90%). These results suggested that the application of fecal dehydrating system would reduce the exposure of dairy cattle to bovine mastitis causing agents contaminated feces and bed complexes, and can be used for environmental bovine mastitis control avoiding misuse or abuse of chemical disinfectants and antibiotics in dairy farm. |
| Key Words:
bacterial elimination, bovine mastitis, dehydrating system, environmental contamination |
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