Ovine and bovine abortion associated with Fusobacterium nucleatum
| Autor: | Clyde A. Kirkbride, Melissa C. Libal, Connie Gates |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
0301 basic medicine
Microbiological culture 040301 veterinary sciences 030106 microbiology ved/biology.organism_classification_rank.species Cattle Diseases Sheep Diseases Serology Microbiology 0403 veterinary science 03 medical and health sciences Pregnancy Fusobacterium necrophorum Animals Sheep General Veterinary biology ved/biology Aborted Fetus Pestivirus 04 agricultural and veterinary sciences Abortion Veterinary Fusobacterium biology.organism_classification Fusobacterium Infections Cattle Female Anaerobic bacteria Fusobacterium nucleatum Anaerobic exercise |
| Zdroj: | Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc. 1(3) |
| ISSN: | 1040-6387 |
| Popis: | 1commented on the dearth of knowledge concerning of anaerobic bacteria other than clostridia in diseases of veterinary importance. Although anaerobic culture methods and media have been improved, reports of research on animal diseases caused by anaerobic bacteria are still scarce. Investigation into the involvement of anaerobes in animal abortions appears to be particularly neglected. The few surveys of anaerobes in veterinary clinical specimens usually have not included aborted fetuses, 2-4,11-13 and routine diagnostic procedures to determine the causes of abortion in food animals usually do not include anaerobic culture. 5,6 A search of the literature revealed a single report of an anaerobic bacterium associated with a bovine abortion (Sit ME, Reddy CA: 1985, Abstr Conf Res Workers Anim Dis #181). Recently a nonclassified flagellated anaerobic or microaerophilic bacterium has been implicated in ovine abortion. 7,8 During the last 2 years, we have isolated, in pure or nearly pure culture, an anaerobic bacterium from the abomasal contents of 5 aborted lambs and 2 aborted calves. The organism was identified by API system 28 a as Fusobacterium nucleatum or Fusobacterium necrophorum. Gas chromatography revealed that it did not convert lactate to proprionate. It did not produce gas in peptone-yeast-extract agar deep stab and, on initial isolation, it grew in the presence of 6% oxygen. It was thus identified as F. nucleatum. 10 In each case, there were lesions indicating an infectious condition. The lesions included suppurative bronchopneumonia, peribronchiolar or perivascular lymphoid hyperplasia or both, focal gliosis, and necropurulent placentitis. The lesions were not pathognomonic for the specific infection, and all the lesions were not present in every case. Other diagnostic procedures including aerobic and microaerophilic bacterial culture; virus isolation attempts; fluorescent antibody tests for leptospira, pestivirus, and bovine herpesvirus- 1; examination of Gimenez-stained placental smears for Chlamydia1 elementary bodies; and serologic examination of ovine fetal serum for toxoplasma1 antibodies failed to reveal another cause for the lesions or the abortions. The herd histories submitted with the cases were not com |
| Databáze: | OpenAIRE |
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