The distribution of Mycobacterium bovis in Queensland cattle herds with observations on the laboratory diagnosis of tuberculosis :
Of 1791 tissues submitted from 1975 to 1978 for histological examination for tuberculosis, 78,5 per cent were classified as tuberculosis, 8.1 per cent club-forming granulomas, 3.3 per cent as hydatid cysts, 3.4 per cent as other granulomas and 2.4 per cent as squamous cell carcinomas. Cultural examination of 2682 tissues for mycobacteria yielded Mycobacterium bovis from 42.88 per cent, other mycobacteria from 7.64 per cent and 0.89 per cent Rhodococcus (Corynebacterium) equi. Of 1478 tissues on which both examinations were performed, culture and histology results were in agreement on 94.1 per cent. M. bovis was isolated on one or more occasions from 564 herds with the highest herd prevalence being recorded in western areas of the state. Culture of 1024 tissues from no visible lesion (NVL) reactors yielded 0.59 per cent M. bovis, 15.04 per cent other mycobacteria and 0.19 per cent R. equi. Of 120 isolates of other mycobacteria from tissues of NVL reactors, 39 were Runyon Group III (20 M. avium complex) and 61 Runyon Group IV. Approximately half of the herds from which NVL tissues were collected were confirmed M. bovis infected properties
| Main Authors: | , , |
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| Format: | biblioteca |
| Language: | eng |
| Published: |
Nov
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| Subjects: | DISTRIBUCION NATURAL, MYCOBACTERIUM, CORYNEBACTERIUM, BACTERIOSIS, TUBERCULOSIS BOVINA, GANADO BOVINO, DIAGNOSTICO DE LABORATORIO, LESIONES, HISTOLOGIA, AUSTRALIA, |
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