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Incidence of pathogenic bacteria in raw milk in Ireland
| Content Provider | Scilit |
|---|---|
| Author | Rea, Mary Cogan, T. M. Tobin, S. |
| Copyright Year | 1992 |
| Description | Journal: Journal of Applied Bacteriology Raw milk from 70 farms was sampled over 13 months for salmonellas, listerias, Escherichia coli, Staphylococcus aureus and mastitic streptococci; total bacterial counts (TBC), coliforms and somatic cells were also counted. TBC < or = 30,000/ml were obtained in 63% of samples. High count milks were found mainly during the winter months: 13% of samples had > 10(4) mastitis pathogens/ml of milk. The mean somatic cell count varied from 4.0 x 10(5) to 8.0 x 10(5)/ml throughout the year with highest counts during the late lactation period. Coliforms were present in all samples, but 65-71% of samples had < 100 coliforms/ml. Up to 60% of supplies had < or = 10 E. coli/ml. One of the 589 samples tested (0.1%) was positive for salmonellas. Yersinia enterocolitica and Y. enterocolitica-like organisms were isolated from 39% of samples with up to 68% of samples positive at some sampling periods. A total of 222 strains of yersinias were isolated; Y. enterocolitica (59%) was the most common strain followed by Y. fredriksenii (35%), Y. kristensenii (1.0%), Y. intermedia (4.5%) and Y. aldovae (0.5%). Listerias were isolated from 8.3% of samples tested; 4.9% were Listeria monocytogenes and 3.4% were L. innocua. There was a significant rise in the isolation rate between December and April from a base line of 0-5% during the spring and summer to 35-37% during the winter months while the cows were indoors. Of 66 silage samples tested from the farms involved in the survey 9% of samples were positive for listerias; 3% of these were L. monocytogenes and 6% were L. innocua.(ABSTRACT TRUNCATED AT 250 WORDS) |
| Related Links | http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2672.1992.tb04985.x/pdf |
| Ending Page | 336 |
| Page Count | 6 |
| Starting Page | 331 |
| ISSN | 00218847 |
| DOI | 10.1111/j.1365-2672.1992.tb04985.x |
| Journal | Journal of Applied Bacteriology |
| Issue Number | 4 |
| Volume Number | 73 |
| Language | English |
| Publisher | Wiley-Blackwell |
| Publisher Date | 1992-10-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Applied Bacteriology Food Science and Technology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Microbiology Applied Microbiology and Biotechnology |
