Preferences of veterinarians for drugs to treat heart disease in dogs and cats     

ADJ WATSON  DB CHURCH 《Australian veterinary journal》1995,72(11):401-403

SUMMARY Responses (473) were collated from a questionnaire sent to 5054 veterinarians in Australia enquiring about drug preferences for treating cardiac disease in dogs and cats. When treating a small breed dog with endocardiosis and mild left congestive heart failure, 74% of 472 respondents used a diuretic, 67% a theophylline derivative, 27% a vasodilator and 20% a positive inotrope. Frusemide was the preferred diuretic and digoxin the preferred inotrope, but vasodilator use varied. Low sodium diets were “often recommended” by 71% of respondents. Propranolol was preferred to diltiazem for treating feline hypertrophic cardiomyopathy. Digoxin was clearly preferred for treating supraventricular dysrhythmias, while lignocaine and digoxin were preferred equally for ventricular dysrhythmias. Respondents appeared more willing than US veterinarians to use theophylline derivatives and prasozin, and less inclined to employ nitrates, hydralazine, inotropes other than digoxin, and low sodium diets.  相似文献   

Transmissibility of Australian strains of Newcastle disease virus     

H A Westbury  J Waddington 《Avian diseases》1979,23(3):555-563

The transmission of Newcastle disease virus strains from infected to direct-, indirect-, and aerosol-contact groups of chickens was studied. Chickens 7, 21, and 63 days old were used in separate trials. Chicken age and virus strain were found to be important in spread of the virus. Strain V4 spread quickly to all contact groups and was classed as highly transmissible, whereas strain JA failed to infect all contact chickens of each age group, thus spreading less efficiently than strain V4. The viruses spread more readily among the 2 older groups. The significance of the transmissibility of Newcastle disease virus vaccine is briefly discussed.  相似文献   

Dynamics of Oxidation of a Fe2+-Bearing Aluminosilicate (Basaltic) Melt     

RF Cooper  JB Fanselow  JKR Weber  DR Merkley  DB Poker 《Science (New York, N.Y.)》1996,274(5290):1173-1176

Rutherford backscattering spectroscopy (RBS) and microscopy demonstrate that the approximately 1400°C oxidation of levitated droplets of a natural Fe2+-bearing aluminosilicate (basalt) melt occurs by chemical diffusion of Fe2+ and Ca2+ to the free surface of the droplet; internal oxidation of the melt results from the required counterflux of electron holes. Diffusion of an oxygen species is not required. Oxidation causes the droplets to go subsolidus; magnetite (Fe3O4) forms at the oxidation-solidification front with a morphology suggestive of a Liesegang-band nucleation process.  相似文献   

Inhibited development of trichostrongylid worms in grazing cattle     

JP FABIYI  DB COPEMAN 《Australian veterinary journal》1989,66(8):240-242

Inhibition of development of gastro-intestinal trichostrongylid worms was studied using successive groups of tracer calves and groups of continuously grazed calves over one year in the Tully area of North Queensland lowland wet tropics. The results, assessed by means of worms from these calves recovered at necropsy 3 weeks after their removal from pastures, showed inhibition in the development of Haemonchus placei and Cooperia punctata at the early fourth stage at the approach to and during the relatively dry period in the area. Inhibition was however minor and inhibited larvae formed but only a small percentage of worm burdens in both categories of calves, indicating that they were not in any way of major epidemiological importance. It was suggested that the minor nature of inhibition was due to the mild climatic conditions which could not produce appropriate conditioning treatment, or caused only mild selection pressure for inhibition in the area.  相似文献   

Virological studies of Adelie Penguins (Pygoscelis adeliae) in Antarctica   总被引：2，自引：0，他引：2  

I R Morgan  H A Westbury 《Avian diseases》1981,25(4):1019-1026

Serum antibodies to influenza virus hemagglutinin 7, Newcastle disease virus (NDV), and avian paramyxoviruses were detected in Adelie penguin colonies in Antarctica. Infection with NDV and avian influenza virus was confined to particular colonies, whereas antibodies to the paramyxoviruses were detected in all seven colonies samples. Two avian paramyxoviruses were also isolated fromcloacal swabs. Results of serological tests must be interpreted with caution, as little as known about the persistence of specific antibodies in Adelie penguins.  相似文献   

THE PATHOGENESIS OF INFECTIOUS AVIAN ENCEPHALOMYELITIS   总被引：2，自引：0，他引：2  

H. A. Westbury  B. Sinkovic 《Australian veterinary journal》1978,54(2):68-71

The age of the chicken at the time of infection with infectious avian encephalomyelitis virus (IAEV) and the route of the administration of the virus had a marked effect on the development of the clinical disease. Chickens given the virus by intramuscular, intraperitoneal and oral routes exhibited a decreased susceptibility to development of clinical disease with increasing age. Irrespective of age, chickens were consistently susceptible to intracerebral inoculation of IAEV. Chickens infected with the virus at 1-, 7- and 14-days of age developed lower neutralising antibody titres to IAEV than chickens infected at 21 and 28 days. A relationship between the ability to produce specific neutralising antibody to IAEV and susceptibility to the development of clinical disease is discussed.  相似文献   

NEWCASTLE DISEASE VIRUS IN AUSTRALIA   总被引：1，自引：0，他引：1  

H. A. Westbury 《Australian veterinary journal》1981,57(6):292-298

  相似文献   

Hendra virus: a highly lethal zoonotic agent     

Westbury H 《Veterinary journal (London, England : 1997)》2000,160(3):165-166

  相似文献   

Peggy Elizabeth Roberta Read, AM (Lady Humphreys)     

R. Giesecke  DB Lindsay 《Australian veterinary journal》2000,78(11):785-785

  相似文献   

Managing arable weeds for biodiversity     

Storkey J  Westbury DB 《Pest management science》2007,63(6):517-523

As a result of the recent intensification of crop production, the abundance and diversity of UK arable weeds adapted to cultivated land have declined, with an associated reduction in farmland birds. A number of questions need to be addressed when considering how these declines can be reversed. Firstly, can the delivery of crop production and biodiversity be reconciled by spatially separating cropping from designated wildlife areas? A number of subsidised environmental schemes in the UK take this approach and are focused on establishing vegetation cover on uncropped land. However, because of the lack of regular disturbance in these habitats, they are dominated by perennials and they therefore have limited potential for promoting the recovery of annual weed populations. A number of farmland bird species also rely on the provision of resources in field centres, and it is therefore likely that the recovery of their populations will rely on weed management options targeted at the cropped areas of the field. This raises two further questions. Firstly, is it possible to identify beneficial weed species that are relatively poor competitors with the crop and also have biodiversity value? Secondly, are the tools available to manage these species at acceptable levels while controlling pernicious weeds? A number of approaches are being employed to answer these questions, including predicting yield loss from weed competition models and exploiting herbicide selectivity. The further development of these tools is crucial if farmer opposition to managing weeds in crops is to be overcome. Copyright © 2007 Society of Chemical Industry  相似文献