摘要:

Leptospirosis is an important animal and human health problem in New Zealand, and the epidemiological and ecological aspects of infection in domestic species and free-living species are described. The characteristics of infection with a particular serovar are often considerably different in different species of animal and primary epidemiological investigations involve differentiating between maintenance-host populations and accidental-host populations for the serovars present in a particular ecosystem.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34815

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Zinc sulphate was added to the drinking water of Angus cows and calves grazing an area considered marginal for copper nutrition of cattle. Mean daily intakes of approximately 12–15 mg Zn/kg live-weight further depressed already low plasma copper concentrations to levels considered to indicate copper deficiency. The plasma copper concentrations in untreated animals increased during the trial indicating adequate copper intakes during this period, but the high zinc intakes of treated animals prevented this seasonal rise. Injection of copper glycinate (0.24 g/animal) alleviated the depression of plasma copper associated with the high zinc intakes. The zinc supplements had little effect on plasma zinc concentrations.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34816

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Free-living members of the Mustelidae and feral cats (Felis catus) inhabiting farmland in the southern half of the North Island of New Zealand were examined for evidence of leptospiral infection. Nine stoats (Mustela erminea), 9 ferrets (Putorious putorious) and 4 weasels (Mustela nivalis) showed no serological or bacteriological evidence of infection. No leptospires were isolated from the kidneys of 11 feral cats but 2 animals had low titres topomonaandballumrespectively. All animals examined were from ecosystems whereballuminfection was endemic in rodents; thus predator-chain transmission does not appear to be an important natural route of transmission for this serovar.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34817

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

The serological, bacteriological and histopathological characteristics of experimental infection with serovarbalcanicain possums (Trichosurus vulpecula) are described, and the possum is shown to be a potential maintenance host for this organism. Serum agglutination titres were maintained at almost constant levels for longer than a year, and leptospiruria was present in 50% of animals for a similar period. A paradoxical reaction tohardjoantigen was found in sera from all possums infected withbalcanica.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34818

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Diaphragmatic muscle from red deer (Cervus elaphus) infected withSarcocystiswas fed to dogs and cats. Dogs producedSarcocystissporocysts after 10 days. Thirty sporocysts measured (mean ± SD) 15.9 ± 0.5 × 10.1 ± 03 ώn. The transmission ofSarcocystisto red deer under New Zealand conditions and the potential importance of sarcocystosis to deer farming is discussed. Cats gave rise toToxoplasmaoocysts. This is the first report of toxoplasmosis in deer in New Zealand.

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34819

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

Extract

ISSN:0048-0169    

DOI:10.1080/00480169.1981.34820

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor