A case of bovine raw milk contamination with <it>Listeria monocytogenes</it>
<p>Abstract</p> <p>During routine sampling of bulk raw milk on a dairy farm, the pathogenic bacteria <it>Listeria monocytogenes</it> was found to be a contaminant, at numbers < 100 cfu/ml. A strain with an indistinguishable pulsed-field gel electrophoresis pattern wa...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2012-07-01
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| Series: | Irish Veterinary Journal |
| Subjects: | |
| Online Access: | http://www.irishvetjournal.org/content/65/1/13 |
| _version_ | 1828476170047324160 |
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| author | Hunt Karen Drummond Niall Murphy Mary Butler Francis Buckley Jim Jordan Kieran |
| author_facet | Hunt Karen Drummond Niall Murphy Mary Butler Francis Buckley Jim Jordan Kieran |
| author_sort | Hunt Karen |
| collection | DOAJ |
| description | <p>Abstract</p> <p>During routine sampling of bulk raw milk on a dairy farm, the pathogenic bacteria <it>Listeria monocytogenes</it> was found to be a contaminant, at numbers < 100 cfu/ml. A strain with an indistinguishable pulsed-field gel electrophoresis pattern was isolated from the bulk milk two months later. Environmental swabs taken at the dairy environment were negative for the presence of <it>L. monocytogenes</it>, indicating a possible case of excretion of the <it>L. monocytogenes</it> directly into the milk. Milk samples were collected from the individual cows and analysed, resulting in the identification of <it>L. monocytogenes</it> excretion (at 280 cfu/ml) from one of the 4 mammary quarters of one dairy cow out of 180. When the infected cow was isolated from the herd, no <it>L. monocytogenes</it> was detected from the remaining herd. The pulsed-field gel electrophoresis pattern of the strain from the individual cow was indistinguishable from that originally isolated from the bulk milk. The infected cow did not show any clinical signs of disease, nor did the appearance of the milk have any physical abnormalities. Antibiotic treatment of the infected mammary quarter was found to be ineffective. This study shows that there can be risks associated with direct contamination of raw milk with <it>L. monocytogenes</it>.</p> |
| first_indexed | 2024-12-11T06:24:45Z |
| format | Article |
| id | doaj.art-8d493d4eb1ff4e3db9202e671cde9fac |
| institution | Directory Open Access Journal |
| issn | 2046-0481 |
| language | English |
| last_indexed | 2024-12-11T06:24:45Z |
| publishDate | 2012-07-01 |
| publisher | BMC |
| record_format | Article |
| series | Irish Veterinary Journal |
| spelling | doaj.art-8d493d4eb1ff4e3db9202e671cde9fac2022-12-22T01:17:42ZengBMCIrish Veterinary Journal2046-04812012-07-016511310.1186/2046-0481-65-13A case of bovine raw milk contamination with <it>Listeria monocytogenes</it>Hunt KarenDrummond NiallMurphy MaryButler FrancisBuckley JimJordan Kieran<p>Abstract</p> <p>During routine sampling of bulk raw milk on a dairy farm, the pathogenic bacteria <it>Listeria monocytogenes</it> was found to be a contaminant, at numbers < 100 cfu/ml. A strain with an indistinguishable pulsed-field gel electrophoresis pattern was isolated from the bulk milk two months later. Environmental swabs taken at the dairy environment were negative for the presence of <it>L. monocytogenes</it>, indicating a possible case of excretion of the <it>L. monocytogenes</it> directly into the milk. Milk samples were collected from the individual cows and analysed, resulting in the identification of <it>L. monocytogenes</it> excretion (at 280 cfu/ml) from one of the 4 mammary quarters of one dairy cow out of 180. When the infected cow was isolated from the herd, no <it>L. monocytogenes</it> was detected from the remaining herd. The pulsed-field gel electrophoresis pattern of the strain from the individual cow was indistinguishable from that originally isolated from the bulk milk. The infected cow did not show any clinical signs of disease, nor did the appearance of the milk have any physical abnormalities. Antibiotic treatment of the infected mammary quarter was found to be ineffective. This study shows that there can be risks associated with direct contamination of raw milk with <it>L. monocytogenes</it>.</p>http://www.irishvetjournal.org/content/65/1/13<it>Listeria monocytogenes</it>Raw milkSubclinical mastitisMilk quality |
| spellingShingle | Hunt Karen Drummond Niall Murphy Mary Butler Francis Buckley Jim Jordan Kieran A case of bovine raw milk contamination with <it>Listeria monocytogenes</it> Irish Veterinary Journal <it>Listeria monocytogenes</it> Raw milk Subclinical mastitis Milk quality |
| title | A case of bovine raw milk contamination with <it>Listeria monocytogenes</it> |
| title_full | A case of bovine raw milk contamination with <it>Listeria monocytogenes</it> |
| title_fullStr | A case of bovine raw milk contamination with <it>Listeria monocytogenes</it> |
| title_full_unstemmed | A case of bovine raw milk contamination with <it>Listeria monocytogenes</it> |
| title_short | A case of bovine raw milk contamination with <it>Listeria monocytogenes</it> |
| title_sort | case of bovine raw milk contamination with it listeria monocytogenes it |
| topic | <it>Listeria monocytogenes</it> Raw milk Subclinical mastitis Milk quality |
| url | http://www.irishvetjournal.org/content/65/1/13 |
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