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4.
J Parasitol ; 84(3): 622-3, 1998 Jun.
Article in English | MEDLINE | ID: mdl-9645870
5.
J Am Vet Med Assoc ; 196(5): 731-4, 1990 Mar 01.
Article in English | MEDLINE | ID: mdl-2407704

ABSTRACT

In a sheep flock, Chlamydia psittaci, Campylobacter fetus, Ca jejuni, and Salmonella dublin caused abortions. A vaccine that contained C psittaci type I from 2 sources: a cow with pneumonia and an aborted ovine fetus, Ca fetus, Ca jejuni, and 4 strains of K99 Escherichia coli was given to 240 ewes before they were bred. All fetuses, placentas, and lambs, that died within 36 hours of birth were examined for infectious agents. Of 55 abortions, 30 (55%) were caused by Chlamydia or Campylobacter spp; 25 of the 30 (83%) abortions took place in the nonvaccinated group (n = 240). Forty-five more lambs survived in the vaccinated group than in the nonvaccinated group. Abortion rates for Chlamydia and Campylobacter spp (2.1 vs 10.4% in vaccinated and nonvaccinated groups, respectively) were significantly different (P = 0.003). Abortion rates for S dublin were not significantly different between groups. The Salmonella epizootic was controlled quickly by sanitation and treatment procedures. The vaccine was at least 80% efficacious against Chlamydia and Campylobacter spp and appeared to be protective.


Subject(s)
Abortion, Veterinary/prevention & control , Bacterial Vaccines , Campylobacter Infections/veterinary , Psittacosis/veterinary , Sheep Diseases/prevention & control , Animals , Campylobacter Infections/prevention & control , Campylobacter fetus/immunology , Chlamydophila psittaci/immunology , Escherichia coli/immunology , Female , Pregnancy , Psittacosis/prevention & control , Sheep , Vaccination/veterinary
6.
J Am Vet Med Assoc ; 196(2): 291-4, 1990 Jan 15.
Article in English | MEDLINE | ID: mdl-2105287

ABSTRACT

Between 1983 and 1989, we examined 586 fetuses and dead lambs submitted to a diagnostic laboratory in Oregon. Toxoplasmosis was diagnosed in 74 (12.6%), campylobacteriosis in 89 (15.2%), chlamydiosis in 75 (12.8%), miscellaneous infections in 153 (26.1%), noninfectious causes in 37 (6.3%), and undetermined causes in 158 (27.0%). Detection of Toxoplasma gondii agglutinating antibodies (greater than or equal to 20) in body fluids or heart serum was considered specific for the diagnosis of toxoplasmosis in ovine fetuses or lambs. Toxoplasma gondii antibody titers (reciprocal) in 285 fluids from fetuses or dead lambs were less than 20 (64.5%), 20 (4.5%), 40 (1.7%), 80 (0.7%), 160 (2.1%), 320 (1.7%), 640 (4.9%), 1,280 (2.8%), 2,560 (4.5%), 5,120 (3.8%), 10,240 (2.1%), and greater than or equal to 20,480 (6.3%).


Subject(s)
Abortion, Veterinary/diagnosis , Sheep Diseases/diagnosis , Toxoplasmosis, Animal/diagnosis , Abortion, Veterinary/pathology , Agglutination Tests , Animals , Female , Immunodiffusion , Pregnancy , Retrospective Studies , Sheep , Sheep Diseases/pathology , Toxoplasmosis, Animal/pathology
7.
J Med Vet Mycol ; 26(2): 101-4, 1988 Apr.
Article in English | MEDLINE | ID: mdl-3418466

ABSTRACT

Coccidioides immitis was isolated from lesions in the lung of a Sonoran Gopher snake, Pituophis melanoleucus affinis. A lactophenol cotton blue mount of a fungal colony grown on Sabouraud's agar revealed coarse, branching, septate hyphae with alternating thick-walled arthroconidia. Histologically, the lung lesions contained spherical, non-budding, double-walled spherules in various stages of maturity. Some spherules contained endospores. Spherules were also present in granulomas associated with the thyroid and pancreas. A diagnosis was made of disseminated coccidioidomycosis, a condition not previously reported in a reptile.


Subject(s)
Coccidioidomycosis/veterinary , Snakes/microbiology , Animals , Coccidioides , Lung Diseases, Fungal/veterinary , Oregon
8.
Lab Anim Sci ; 38(2): 167-8, 1988 Apr.
Article in English | MEDLINE | ID: mdl-3374093

ABSTRACT

The isolation of Clostridium spiroforme from intestinal contents of rabbits was achieved by sampling the supernatant-pellet interphase of centrifuged specimens processed for routine toxin analysis. High-speed centrifugation at 20,000x for 15 minutes provided a rapid and effective means of separating this anaerobic pathogen from the majority of both indigenous and non-indigenous intestinal microbial flora. The unusual helically-coiled, semicircular shape of the microorganism is considered, at least in part, responsible for this phenomenon.


Subject(s)
Clostridium Infections/veterinary , Clostridium/isolation & purification , Rabbits/microbiology , Animals , Centrifugation , Clostridium Infections/diagnosis , Feces/microbiology
9.
Vet Pathol ; 24(5): 419-26, 1987 Sep.
Article in English | MEDLINE | ID: mdl-3672807

ABSTRACT

Campylobacter jejuni was inoculated intravenously into pregnant ewes on gestation days 114 and 123 to reproduce ovine abortion. All ewes aborted 7-12 days post-inoculation. High numbers of C. jejuni were isolated from ewe tissues (caruncle, bile, cecal feces), fetal tissues, and placenta. C. jejuni colonies were identified in caruncles and placenta by light microscopy and immunoperoxidase techniques. Histologically, inoculated ewes had a severe purulent endometritis with vasculitis. Placentas from inoculated ewes and field cases showed necrosis and purulent inflammation; however, placentas from inoculated ewes had large numbers of bacterial colonies compared to few bacteria found in field cases. Histologically, only one fetus from the inoculated ewes showed lesions (purulent bronchopneumonia), whereas all fetuses from field cases had a distinct bronchopneumonia, and one fetus showed multifocal hepatic necrosis. These results suggest that C. jejuni (serotypes Penner 1 and Lior 2) is an important abortifacient organism for sheep.


Subject(s)
Abortion, Veterinary/pathology , Campylobacter Infections/veterinary , Pregnancy Complications, Infectious/veterinary , Sheep Diseases/pathology , Abortion, Veterinary/microbiology , Animals , Campylobacter Infections/microbiology , Campylobacter Infections/pathology , Campylobacter fetus/isolation & purification , Female , Fetus/pathology , Placenta/microbiology , Placenta/pathology , Pregnancy , Pregnancy Complications, Infectious/microbiology , Pregnancy Complications, Infectious/pathology , Sheep , Sheep Diseases/microbiology
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