Epidemiological study of pasture-associated laminitis and concurrent risk factors in the South of England     

Menzies-Gow NJ  Katz LM  Barker KJ  Elliott J  De Brauwere MN  Jarvis N  Marr CM  Pfeiffer DU 《The Veterinary record》2010,167(18):690-694

A retrospective study of laminitis was carried out to identify risk factors associated with this disease on an East Anglian farm with approximately 1000 animals living in an area of 1000 acres. Medical records between January 1997 and May 2000 and between April 2005 and March 2008 were reviewed, and the age, sex, weight (kg), height (inches [in] and hands [H]) and weight-to-height ratio (kg/in) was recorded. The prevalence, incidence and seasonality of laminitis were determined and their relationship to the monthly temperature, rainfall and hours of sunshine was evaluated. Averaged over the six years, the highest prevalence (2.6 per cent) and incidence (16 cases/1000 animals) of laminitis occurred in May. The findings of a multivariate analysis revealed that females (P=0.007, odds ratio [OR] 1.46, 95 per cent confidence interval [CI] 1.1053 to 1.9646) and light animals (P ≤ 0.001, OR=0.995, 95 per cent CI =0.9932 to 0.9963) had the greatest risk of developing laminitis. A positive association was found between hours of sunshine and incidence (P=0.007, relative risk [RR] 1.009, 95 per cent CI 1.001 to 1.012) and prevalence (P=0.002, RR 1.008, 95 per cent CI 1.003 to 1.012) of laminitis. The data suggest that there is a relationship between season, sex of the animal and the development of laminitis.  相似文献   

Blood lipid concentrations and lipoprotein patterns in captive and wild American black bears (Ursus americanus)     

Frank N  Elliott SB  Allin SB  Ramsay EC 《American journal of veterinary research》2006,67(2):335-341

OBJECTIVE: To compare blood lipid concentrations and lipoprotein patterns for captive and wild American black bears (Ursus americanus). ANIMALS: 7 captive and 9 wild adult (> or = 4 years old) black bears. PROCEDURE: Blood was collected from 2 groups of captive black bears (groups A and B) and 1 group of wild black bears (group C). Blood triglyceride (TG) and cholesterol concentrations were compared among groups. Plasma lipoproteins were isolated by use of a self-generating gradient of iodixanol, and lipoprotein patterns were compared between groups A and B. RESULTS: Captive bears (mean +/- SD, 187.8 +/- 44.4 kg) weighed significantly more than wild bears (mean, 104.8 +/- 41.4 kg), but mean body weight did not differ between groups A and B. Mean blood TG concentrations for groups B (216.8 +/- 16.0 mg/dL) and C (190.7 +/- 34.0 mg/dL) were significantly higher than that of group A (103.9 +/- 25.3 mg/dL). Mean blood cholesterol concentration was also significantly higher for group B (227.8 +/- 8.2 mg/dL) than for groups A (171.7 +/- 35.5 mg/dL) or C (190.8 +/- 26.8 mg/dL). Mean very-low-density lipoprotein TG and low-density lipoprotein cholesterol concentrations were 2- and 3-fold higher, respectively, for group B, compared with concentrations for group A. CONCLUSIONS AND CLINICAL RELEVANCE: Blood lipid concentrations vary significantly among populations of black bears. Plasma lipoprotein patterns of captive bears differed significantly between colonies and may have reflected differences in diet or management practices.  相似文献   

Satellite remote sensing of breeding habitat for an African weaver-bird   总被引：2，自引：0，他引：2  

David O. Wallin  Clive C. H. Elliott  Herman H. Shugart  Compton J. Tucker  Friedrich Wilhelmi 《Landscape Ecology》1992,7(2):87-99

Data derived from the Advanced Very High Resolution Radiometer (AVHRR) on board the NOAA series of operational, polar orbiting, meteorological satellites have previously been shown to be quite useful for monitoring vegetation dynamics at scales ranging from regional (10⁴ km²) to global. In this report, we demonstrate that these same data can be used to monitor potential breeding habitat for a highly mobile, granivorous African weaver-bird, the red-billed quelea (Quelea quelea). This species is often considered to be an agricultural pest, affecting cereal production throughout sub-Saharan Africa. The temporal resolution and very large (continental) spatial coverage provided by these data can provide a unique context within which to examine species distribution and abundance patterns.  相似文献   

Surgical, medical, and nutritional management of gastric adenocarcinoma in a dog     

G S Elliott  D A Stoffregen  D C Richardson  W E Blevins  R C Richardson 《Journal of the American Veterinary Medical Association》1984,185(1):98-101

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Malignant fibrous histiocytoma in a dog     

JB THOMAS 《Australian veterinary journal》1988,65(8):252-254

A large tumour present on the proximal tibia of a Bull Mastiff dog was diagnosed on histological appearance as a Malignant Fibrous Histiocytoma. These tumours, rarely identified in domestic animals, but well recognised in humans, are typically pleomorphic sarcomas with histiocytic and fibroblastic differentiation. Less commonly, one cell type predominates. In this case there was prominent histiocytic differentiation.  相似文献   

Comparative feeding behaviour and food preferences of oxpeckers (Buphagus erythrorhynchus and B. africanus) in captivity     

I M Stutterheim  J D Bezuidenhout  E G Elliott 《The Onderstepoort journal of veterinary research》1988,55(3):173-179

The feeding methods, activities and behaviour of red-billed and yellow-billed oxpeckers in captivity were compared. Both species were found to be very similar with regard to feeding. The differences observed were a greater dependence on ectoparasites such as flies and larger ticks (Amblyomma hebraeum) and a higher food intake for the yellow-billed oxpecker. These differences are the result of the larger size, limited choice of host animals and closer host/oxpecker relationship of the yellow-billed oxpecker.  相似文献   

Generalised protothecosis in a Collie dog     

JB THOMAS  N. PRESTON† 《Australian veterinary journal》1990,67(1):25-27

A case of generalised protothecosis in a Collie dog is discussed. A long-standing history of severe colitis was the major clinical sign. Dissemination to many organs was confirmed histologically. Possible pathogenesis is discussed along with a review of the literature. The possibility of a breed disposition in Collie dogs is discussed. The organisms are ubiquitous in the environment and generalised disease suggests the possibility of immune competence.  相似文献   

T lymphocyte subset alterations following bluetongue virus infection in sheep and cattle     

J A Ellis  A J Luedke  W C Davis  S J Wechsler  J O Mecham  D L Pratt  J D Elliott 《Veterinary immunology and immunopathology》1990,24(1):49-67

To determine potential mechanisms of differential disease expression in ruminants infected with bluetongue virus (BTV), clinically normal, BTV-seronegative, yearling sheep and cattle were infected subcutaneously with a standardized insect-source inoculum of BTV serotype 17 (BTV-17) (three infected and one contact control each) or animal adapted BTV serotype 10 (BTV-10) (three sheep only). BTV was isolated from peripheral blood cell components of infected sheep and cattle and all infected animals showed evidence of seroconversion by 14 days post infection (PI). Sheep infected with both serotypes of BTV developed pyrexia, oral lesions, and leukopenia which were most severe on days 7-8 PI. Analysis of peripheral blood mononuclear leukocytes with specific monoclonal antibodies and flow cytometry revealed panlymphocytopenia on day 7 PI. This response was further characterized by an increase in the CD4/CD8 ratio (greater than 3) resultant from a greater decrease in absolute numbers of circulating SBU-T8(CD8+) ("cytotoxic/suppressor") lymphocytes compared to SBU-T4 (CD4)+ ("helper") lymphocytes. SBU-T19+ lymphocytes were also decreased below baseline values on days 5-14 post infection. On day 14 PI there were increased CD8+ lymphocytes and decreased CD4/CD8 ratios (approximately 0.6) in these sheep. Clinical and hematologic changes in cattle infected with BTV-17 were minimal and consisted of mild pyrexia (rectal temperature 103 degrees F) on day 9 PI in two of three infected animals and mild leukopenia on several days PI in one animal. This leukopenia was the result of a pan T lymphocytopenia with CD4/CD8 ratios in the expected range (1-2). Similar to infected sheep, infected cattle did have a shift (decrease, approximately 0.8) in the peripheral CD4/CD8 ratio associated with an increase in circulating BoT8 (CD8)+ lymphocytes on day 14 post infection. Lymphocytes in the peripheral blood of all sheep and cattle infected with BTV-17 proliferated in vitro in response to purified BTV-17. These results confirm and extend those of previous studies that indicate species differences in the hematologic response to an equivalent BTV infection in domestic ruminants.  相似文献   

Dynamic surface water distributions influence wetland connectivity within a highly modified interior landscape     

Blake A. Barbaree  Matthew E. Reiter  Catherine M. Hickey  Nathan K. Elliott  Danica Schaffer-Smith  Mark D. Reynolds  Gary W. Page 《Landscape Ecology》2018,33(5):829-844

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Psychometric Validation of a General Health Quality of Life Tool for Cats Used to Compare Healthy Cats and Cats with Chronic Kidney Disease          下载免费PDF全文

E.S. Bijsmans  R.E. Jepson  H.M. Syme  J. Elliott  S.J.M. Niessen 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2016,30(1):183-191

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