Seasonality of sarcoptic mange in pigs in South Australia     

PR DAVIES  MJ MOORE  AM POINTON 《Australian veterinary journal》1991,68(12):390-392

Retrospective analysis of records, from July 1987 to June 1991, of 1140 inspections of slaughtered pigs from 154 swine herds in the Pig Health Monitoring Scheme of South Australia was conducted to evaluate patterns of variation in the prevalence and severity of skin lesions typical of sarcoptic mange. An increase in the severity of sarcoptic mange in winter and spring was observed. There was a substantial reduction in the severity of mange over the period of monitoring. These observations support the role of monitoring at slaughter in the management of endemic disease. They provide some basis for refining control programs for mange to improve cost-effectiveness.  相似文献   

Experimental ischaemia of the ileum and concentrations of the intestinal isoenzyme of alkaline phosphatase in plasma and peritoneal fluid     

J. V. DAVIES  E. L. GERRING  R. GOODBURN  P. MANDERVILLE 《Equine veterinary journal》1984,16(3):215-217

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Assessment of contrasting perennial ryegrasses, with and without clover, under continuous sheep stocking in the uplands. 4. Animal performance in years 4–6     

D. A. DAVIES  M. FOTHERGILL  C. T. MORGAN 《Grass and Forage Science》1992,47(3):249-258

Relative sheep production from Aurora (very early flowering), Mellra (late-flowering tetraploid) and Aberystwyth S23 (late flowering) perennial ryegrass ( Lolium perenne L.) varieties was compared during harvest years 4-6 (1988-90) as grass only (200 kg N ha⁻¹) and grass/clover (75 kg N ha ⁻¹ in 1988, 0 kg N ha⁻¹ in 1989 and 1990) at Bronydd Mawr Research Centre (310-363 m) in mid-Wales. The pastures were continuously stocked with Beulah Speckled Face ewes and their Suffolk cross lambs from spring to mid-July. From late July to early November only the weaned lambs grazed the swards.
Mean (1988-90) total annual lamb production per hectare from Aurora and Meltra was 70% and 16% more than that from S23. However, the difference between both varieties and S23 was much greater as grass/clover (Aberystwyth S184 small-leaved type) than as grass-only swards. Differences between the grasses in individual lamb growth rates were most pronounced during the post-weaning period, when that on Meltra was 38% and 23% more than on Aurora and S23 respectively.
Mean annual lamb output from grass/clover swards was only 70% of that from grass-only swards during the 2 years when the former swards received no fertilizer N. Averaged over the 3 years (1988-90) individual lamb liveweight gain post weaning was 38% higher on grass/clover than on grass-only swards.
The results are discussed in relation to those for the first 3 harvest years (1985-87). It is concluded that, although Aurora was less persistent than both late-flowering varieties, its superiority in providing an average of 29% more lamb output than S23 during the critical spring period (up to early June) would be of considerable practical significance in upland sheep systems, as would be the overall superiority of the tetraploid Meltra over S23.  相似文献   

Triceps tendon rupture in the dog following corticosteroid injection     

J. V. DAVIES  D. G. CLAYTON JONES 《The Journal of small animal practice》1982,23(12):779-787

Two cases are described in which rupture of the triceps tendon in the dog, has followed the local infiltration of a long acting corticosteroid preparation.  相似文献   

Bronchial foreign bodies in four dogs     

SERENA E. BROWNLIE  J. V. DAVIES  D. G. CLAYTON JONES 《The Journal of small animal practice》1986,27(4):239-245

This paper describes the history, clinical signs and diagnosis of cereal ear foreign bodies in four dogs. Presternal tracheotomy was required for removal of the foreign bodies in three out of the four cases and the technique is described.  相似文献   

Diet of cormorants, Phalacrocorax carbo L., from two fisheries in north-west England     

M. J. FELTHAM  J. M. DAVIES 《Fisheries Management and Ecology》1995,2(2):157-159

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QUANTITATIVE ULTRASONOGRAPHY FOR ASSESSMENT OF BONE MINERAL DENSITY IN THE CANINE RADIUS AND TIBIA     

SUSANNE K. LAUER  EMMA S. DAVIES  GISELLE HOSGOOD  JEANNETTE CREMER 《Veterinary radiology & ultrasound》2009,50(1):97-103

Quantitative ultrasound allows noninvasive assessment of cortical bone density. Potential applications include monitoring of fracture healing, rehabilitation, and skeletal diseases. The objectives of this study were to determine the three most accessible portals to obtain speed of sound measurements of the radius and tibia with an Omnisense multisite quantitative ultrasound device and to determine probe-dependent intra- and interoperator variability for speed of sound measurements of the radius and tibia in six healthy hounds. The radius was most accessible at the cranial proximal metaphysis, the cranial middiaphysis, and medial distal metaphysis. Speed of sound measurements were possible at these sites on the radius with acceptable intra- and interoperator variation (1.6–4.6%). Measurements differed significantly when performed with different probes at the cranial proximal radial metaphysis. The tibia was most accessible at the cranial proximal metaphysis, the medial middiaphysis, and medial distal metaphysis. The medial middiaphyseal and mediodistal tibial sites allowed measurements with lowest intra- and interoperator variation (<3.5%). A smaller probe allowed tibial measurements with lowest interoperator variation. Measurements did not differ significantly at each tibial site when different probes were used. Measurements did not differ significantly between observers when measuring with the same probe at each specific site on radius and tibia. A medium-size probe allowed for most time-efficient measurements and the least number of failed measurements on the radius and tibia. Speed of sound can be consistently measured by different observers on the radius and tibia in healthy hounds.  相似文献   

Fish wounding by cormorants, Phalacrocorax carbo L.     

J.M. DAVIES  M.J. FELTHAM  M.V. WALSINGHAM 《Fisheries Management and Ecology》1995,2(4):321-324

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A disease of Vinca rosea caused by Rhizopus stolonifer     

D. C. HARRIS  D. L. DAVIES 《Plant pathology》1987,36(4):608-609

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A comparison of conservative treatment and fenestration for thoracolumbar intervertebral disc disease in the dog     

J. V. DAVIES  N. J. H. SHARP † 《The Journal of small animal practice》1983,24(12):721-729

Many dogs will recover after a thoracolumbar disc protrusion whether they are treated conservatively or surgically. Two statistically similar groups of dogs submitted to the Department of Surgery, Royal Veterinary College (RVC) and to the Department of Surgery, University of Glasgow Veterinary School (UGVS) were reviewed. At the RVC an aggressive surgical policy was adopted and at the UGVS a conservative regime was followed. A comparison has been made between the two groups to evaluate the advantages of each regime. This comparison has provided the basis for a treatment protocol for cases of thoracolumbar intervertebral disc disease in the dog.  相似文献