Inspection of lymph nodes for caseous lymphadenitis and its effect on the density of microbes on sheep carcasses |
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| Affiliation: | 1. New South Wales Department of Primary Industries, 1243 Bruxner Highway, Wollongbar, NSW 2478, Australia;2. Food Safety Services, PO Box 344, Lyndoch, South Australia 5351, Australia;3. Kurrajong Meat Technology, PO Box 181 Kurmond, NSW 2758, Australia;4. Meat & Livestock Australia, Locked Bag 991, North Sydney, NSW 2059, Australia;3. Robert Koch Institute, 13353 Berlin, Germany;4. Lehrstuhl für Biochemie, Technische Universität München, 85747 Garching, Germany;1. School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia;2. CRC for Sheep Industry Innovation, CJ Hawkins Homestead, University of New England, Armidale, NSW 2351, Australia;3. From the Lehrstuhl für Biochemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany,;4. Working group “Cellular Interactions of Bacterial Pathogens,” ZBS 2, Robert Koch-Institute, Seestrasse 10, 13353 Berlin, Germany, and;5. ZBS 6 “Proteomics and Spectroscopy,” Robert Koch-Institute, Nordufer 20, 13353 Berlin, Germany;1. Department of Environmental Engineering Bushehr branch, Islamic Azad University, Bushehr, Iran;2. The Persian Gulf Marine Biotechnology Research Center, Bushehr University of Medical Sciences, Bushehr, Iran;3. Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran;4. Systems Environmental Health, Oil, Gas and Energy Research Center, Bushehr University of Medical Sciences, Bushehr, Iran;5. Department of Fisheries and Natural Resources, Bushehr Branch, Islamic Azad University, Bushehr, Iran |
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| Abstract: | This study aimed to measure the amount of microbial contamination caused by inspecting the lymph nodes of adult sheep carcasses for caseous lymphadenitis (CLA). Surface swabs from carcasses pre-inspection (N = 296) and post-inspection (N = 296) were obtained for enumeration of indicator organisms at three commercial abattoirs. At the scapular site, inspection doubled the probability of detecting E. coli (Pr before = 0.35, Pr after = 0.67) and increased the expected count of E. coli from 2 cfu/cm2 to 13 cfu/cm2. Inspection at the rump site increased the probability of detecting E. coli by 1.1 times (Pr before = 0.84, Pr after = 0.93) and increased the expected count from 32 cfu/cm2 to 45 cfu/cm2. Effects were also observed for Enterobacteriaceae and total viable count. The findings show that routine inspection of adult sheep carcasses for CLA has a detrimental impact on carcass microbiological traits. |
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