Landscape-ecological mapping of the Netherlands   总被引：1，自引：0，他引：1  

Kees J. Canters  Cees P. den Herder  Aart A. de Veer  Paul W. M. Veelenturf  Rein W. de Waal 《Landscape Ecology》1991,5(3):145-162

The Landscape-ecological Mapping of the Netherlands project (LMN project) started in 1983 with the aim of establishing a landscape-ecological database for use in developing and evaluating national land-use plans. The project, working with grid cells of 1 km², has four working objectives: a) development of mapping potential for basic landscape-ecological data, b) assessment of susceptibility to interventions, c) evaluation of significance for nature conservation and d) production of vulnerability maps, as a combination of susceptibility and significance. In addition to information on soil, groundwater, ecotopes, flora and fauna, the database also incorporates information on physiographical features and entire landscapes. The resulting database is a geographic information system (GIS). This article describes the second phase of the project (1985–1989), covering the Randstad area, and focusses on the methods and the applications potential of the database.  相似文献   

Covalently protein-bound bilirubin conjugates in cholestatic disease of dogs     

J Rothuizen  T van den Ingh 《American journal of veterinary research》1988,49(5):702-704

We investigated the occurrence of covalently protein-bound bilirubins in the plasma of dogs with hyperbilirubinemia attributable to hepatobiliary diseases or Coombs test-positive hemolysis. The bilirubins in plasma were measured with the conventional Van den Bergh reaction, by treatment with diazotized p-iodoaniline, and by high-performance liquid chromatography of bilirubin and its methylesters after alkaline methanolysis. All but one dog had covalently protein-bound bilirubin conjugates. The concentration and the fraction of total bilirubins varied in all diseases investigated, but they tended to be low in primary hemolysis. The "biliprotein" complex accounted for 2 to 94% of total plasma bilirubins. Because biliprotein usually is not cleared by the liver, but has a half-life comparable with that of albumin, it prevents the evaluation of the actual state of the underlying disease. Measurement of the total bilirubin concentration exclusively with the Van den Bergh reaction, therefore, is clinically useless. Other methods should be introduced for routine bilirubin assays, permitting the measurement of noncovalently bound pigment as a meaningful estimate of the course of the disease.  相似文献   

Estimation of the costs of mastitis, using National Animal Health Monitoring System and milk somatic cell count data     

J K Lightner  G Y Miller  W D Hueston  C R Dorn 《Journal of the American Veterinary Medical Association》1988,192(10):1410-1413

Data collected by the National Animal Health Monitoring System in Ohio for a 12-month period during 1986 and 1987 were used to determine the relative magnitude of costs associated with mastitis in the following categories: milk production loss, veterinary services, drugs, producer labor, and "other" factors. The cost of milk loss associated with mastitis that was reported by producers cooperating in the National Animal Health Monitoring System program was compared with estimates based on bulk tank somatic cell counts and individual cow milk somatic cell counts. Using producer-reported estimates, milk loss accounted for about one third of the total cost associated with mastitis. When estimates of milk loss were replaced by estimates based on bulk tank somatic cell counts, milk loss accounted for over 80% of the total cost of mastitis. Estimates of the cost of milk loss based on studies relating milk yield to somatic cell counts differed considerably. Consequently, it was unclear how to best estimate the relative magnitude of the milk loss component of mastitis costs.  相似文献   

The Future of the CVMA Auxiliary          下载免费PDF全文

Bulmer J 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(6):491-492

  相似文献   

Newfoundland. Health status of pigs          下载免费PDF全文

Whitney HG 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(7):594

  相似文献   

Actinobacillus (Haemophilus) pleuropneumoniae Symposium   总被引：1，自引：0，他引：1       下载免费PDF全文

Lynch JA  Larivière S 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(7):571

  相似文献   

The Use of an Enzyme-linked Immunosorbent Assay for Diagnosis of Actinobacillus pleuropneumoniae Infection in Pigs   总被引：7，自引：0，他引：7       下载免费PDF全文

Willson PJ  Schipper C  Morgan ED 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(7):583-585

  相似文献   

Evaluation of ivermectin on performance of beef cattle on pasture in alberta   总被引：2，自引：2，他引：0       下载免费PDF全文

Kennedy MJ  Zobell DR 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(7):566-568

  相似文献   

A review of the experimental use of antimicrobial agents in the treatment of periodontitis and gingivitis in the dog          下载免费PDF全文

Reed JH 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(9):705-708

Tetracycline, metronidazole, and chlorhexidine have been tested for their effectiveness in the treatment of periodontitis in dogs under experimental conditions. Tetracycline has been effective in reducing bone resorption in dogs with periodontitis when used in the long-term. When used for short times, it can result in reduction of the numbers of microorganisms that are associated with disease. Tetracycline can inhibit the activity of mammalian collagenase thought responsible for the destruction of alveolar bone and it may be capable of inhibiting the adherence of microorganisms and thus preventing infection. In some experiments, metronidazole was more effective than tetracycline in eliminating spirochetes from the periodontal flora, and it has been found effective in preventing the inflammation and the development of the bacterial flora usually associated with the natural accumulation of plaque. Chlorhexidine (0.2% aqueous solution) has been found effective in preventing the normal progression of periodontal disease when used as a spray for the long-term treatment of dogs. It could prove to be as effective as brushing for the long-term control of periodontitis in the dog. Limited information is available on the use of clindamycin, spiramycin, and vancomycin.  相似文献   

The discovery of Chiron's cave, a prehistoric school of medicine for animals and humans          下载免费PDF全文

Hausmann W  Jöchle W 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(10):857-860

  相似文献