摘要:

The effect of cobalt supplementation on serum vitamin B12, growth rate and survival rate was measured in controlled field experiments with Texel twin lambs of the same sex, grazing cobalt‐deficient pastures.

ISSN:0165-2176    

DOI:10.1080/01652176.1997.9694727

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

From February to June 1995, 5–12 blood samples were collected in each Dutch pig herd and tested for antibodies against pseudorabies virus (PRV). The percentage of PRV‐seropositive pig‐finishing herds in three regions with more than 1,000 pigs/km2(regions 2, 4 and 7) was 6% (region 2), 12% (region 7), and 25% (region 4). The percentage of PRV‐seropositive pig‐finishing herds in five regions with fewer than 1,000 pigs/km2(regions 1, 3, 5, 6, and 8) was 3% (region 1), 9% (region 3), 6% (region 5), 0% (region 6), and 4% (region 8). The small sample size allows only the detection of major outbreaks and the percentages of PRV‐seropositive herds therefore underestimate the actual virus circulation in the regions. The fraction of PRV introductions that will result in a major outbreak depends on the herd immunity and thus on the vaccination programme of the herds. By combining for each herd the occurrence or absence of a major outbreak with the herd immunity induced by the vaccination programme, we estimated the average rate at which PRV was introduced into finishing herds in the eight regions. The average number of PRV introductions per finishing herd per finishing period (16 weeks) in the pig‐dense regions was estimated at 0.20 in region 2, 0.83 in region 4, and 0.48 in region 7. In the less densely populated regions this rate was estimated at 0.08 in region 1, 0.34 in region 3, 0.17 in region 5, 0.00 in region 6, and 0.09 in region 8. The eight regions could be classified into four areas with a statistically different (P < 0.05 in Mann Whithey U test) rate of PRV introduction: i) regions 1, 6, and 8; ii) regions 2 and 5; iii) regions 3 and 7; and iv) region 4.

ISSN:0165-2176    

DOI:10.1080/01652176.1997.9694728

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

The efficacy of IV versus SC administration of Glucantime® (100 mg/kg of body weight/day) was studied in 41 dogs with leishmaniasis without serious renal insufficiency. Remission was obtained in 35 dogs (85.4%) after 3 to 6 weeks of treatment but there was a relapse within 1 year in 26 dogs (74.3%). The median period of remission was 6 months. Cross‐over therapy resulted in remission in 17 of 20 dogs. The percentage of remission after initial and cross‐over therapy, the median relapse free period, and survival did not differ significantly between the two groups. There were very few complications and most were of minor clinical importance. Thrombophlebitis developed in one dog after IV injection. In dogs with leishmaniasis without serious renal insufficiency, there is a 75% probability of survival for more than 4 years following treatment with Glucantime®for 3 to 6 weeks, with additional treatment when relapses occur.

ISSN:0165-2176    

DOI:10.1080/01652176.1997.9694729

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

Faecal samples from 272 dogs and 236 cats from Dutch households were examined for nematode eggs.Toxocaraeggs were found in 8 dogs (2.9%) and 11 cats (4.7%).Toxascariseggs were found in 1 dog (0.4%) andTrichuriseggs in 2 dogs (0.7%). Examination of faeces from 56 stray cats revealedToxocarain 12 cases (21%) andToxascariseggs in 3 cases (5.4%). No hookworm eggs were found. The percentage of positive samples was significantly higher in young animals than in older animals.Toxocaraeggs were found significantly more frequently in stray cats than in cats kept in households.

ISSN:0165-2176    

DOI:10.1080/01652176.1997.9694730

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

In a study on the differentiation between pituitary‐dependent hyperadrenocorticism (PDH) and hyperadrenocorticism due to adrenocortical tumour (AT), two questions were addressed: 1. Do basal urinary corticoid/creatinine (c/c) ratios have any value in this respect, and 2. what is the reference percentage suppression of the urinary c/c ratios in the high‐dose dexamethasone suppression test?

ISSN:0165-2176    

DOI:10.1080/01652176.1997.9694731

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

The macroscopic and histological appearance of cutaneous incisions closed with polyglecaprone 25 (Monocryl)* and polyglactin 910 (Vicryl)†suture materials were compared in four dogs. Polyglecaprone 25 compared favourably to polyglactin 910 suture material for closure of canine skin incisions, and was associated with significantly less tissue reaction in the early phases of the healing process than was polyglactin 910 suture material. This difference was not present at later evaluation times.

ISSN:0165-2176    

DOI:10.1080/01652176.1997.9694732

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

In this clinical study, 19 full metal crown restorations of canine teeth were placed in seven working dogs. Thirteen canine teeth were severely abraded with no involvement of the pulp cavities; six fractured canine teeth were endodontically treated. At least 1/3 of the coronal part of the canine tooth was available for a supragingivally performed, minimal tooth crown preparation. An adhesive technique to bond the electrolytically etched crown (an alloy of cobalt‐chrome‐molybdenum) to the tooth was used. The metal crowns, slightly shorter and with a rounder tip than the original tooth, were bonded to the enamel and dentine by using a resin luting cement. Posts or postand‐core techniques were not used. Mean follow‐up period was 32 months (range 24 ‐ 52 months), at which stage 17 crowns were found to be intact and functional. Two crowns were lost as a result of trauma resulting in a fracture of the tooth below the crown.

ISSN:0165-2176    

DOI:10.1080/01652176.1997.9694733

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

A 15‐year‐old Dutch warmblood mare was presented because of lethargy, which had been present for several weeks, and severe anaemia. Total protein was high and serum electrophoresis revealed a monoclonal peak in the alpha‐2 region. Monoclonal immunoglobulin, IgG(T), was detected by immuno‐electrophoresis in serum and urine. Postmortem examination revealed a relatively large number of plasmacytoid cells in the bone marrow and a monotonous population of plasmacytoid cells in the spleen. These findings are suggestive of a plasma cell myeloma.

ISSN:0165-2176    

DOI:10.1080/01652176.1997.9694734

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

The seasonal occurrence of anaplasmosis (Anaplasma marginale) outbreaks in dairy and beef cattle was analysed for a region of Argentina (29° to 31° S and 58° to 62° W) that is free ofBoophilus microplusticks, using data collected from December 1978 to November 1995. The outbreaks were confirmed by inspection of blood smears obtained from sick or dead cattle. A total of 94 outbreaks were identified: 48 in beef cattle and 46 in dairy herds. The proportional seasonal distribution of outbreaks was different in beef and dairy cattle (chi‐square= 15.08, P < 0.01). While no seasonal pattern of anaplasmosis outbreaks was found in dairy cattle, there was a concentration of outbreaks during the summer months (54 % of the total) in beef cattle. Rural practices that are carried out more frequently on dairy than on beef cattle may have favoured iatrogenic transmission ofA. marginalein the milk production system.

ISSN:0165-2176    

DOI:10.1080/01652176.1997.9694735

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

Clinical, histopathological, and EM findings are described for two Cairn terrier litter mates, an 18‐month‐old male and an 11‐month‐old female with progressive neuronopathy. The initial clinical signs were characterized by hind limb weakness and ataxia, which deteriorated with exercise. These signs progressed over several months to tetraparesis. Pathological examination revealed extensive chromatolytic degeneration of neurons and moderate secondary Wallerian‐type degeneration in the spinal cord and brain stem. Progressive neuronopathy can be differentiated clinically from globoid cell leukodystrophy, another progressive neurological disorder in Cairn terriers, by the exercise‐induced deterioration of the neurological signs. Progressive neuronopathy occurs only in Cairn terriers and because of the similarity in age of onset and the occurrence in one litter, an inherited disease is suspected.

ISSN:0165-2176    

DOI:10.1080/01652176.1997.9694736

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor