摘要:

In this experiment 20 one year old bulls received a single intramuscular injection of the anabolic preparation diethylstilbestrol &propionate (DES‐DP) (an oil preparation or an emulsion). Four animals received a corresponding placebo. The application of DES‐DP to bulls caused characteristic histological alterations in the peripheral glandular epithelium of the prostate, which could be observed until four weeks after treatment. The value of histological investigation as a screening method was, however, limited by the occurrence of only few metaplastic lesions and a rapid recovery. By contrast, immunohistochemistry using a polyclonal cytokeratin antiserum K40 appeared to be a specific and very sensitive method to detect oestrogen‐induced lesions in the prostate. In only two animals, six weeks after injection with the DES‐emulsion, false‐negative results were obtained, demonstrating the potential value of this screening method. The excretion of DES in the urine and faeces was monitored using radioimmunoassay following chromatographic purification of the urine and faeces extracts. The excretion of DES in urine was faster for animals of the oil group. The DES content in urine decreased to the 1 μg/l level after 42 days (emulsion group) or 70 days (oil group). The excretion in faeces was comparable to that in urine. After day 21 the excretion patterns of the two excreta were indistinguisable.

ISSN:0165-2176    

DOI:10.1080/01652176.1989.9694189

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The surgical anatomy of the perineum and a modified technique for perineal hernia repair by transposition of the internal obturator muscle are described.

ISSN:0165-2176    

DOI:10.1080/01652176.1989.9694190

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

A modified technique for transposition of the internal obturator muscle was used to repair perineal hernias in 100 dogs. Complications and long‐term results are described. The most important complications were wound infection (45%), faecal incontinence (15%), and perineal fistula (7%). These complications often occurred in combination. The recurrence rate of perineal hernia was 5%.

ISSN:0165-2176    

DOI:10.1080/01652176.1989.9694191

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

In a mouse model the effects of environmental stress on gastrointestinal parameters and the effects of cheese‐whey on the changes induced by stress were studied. Mice were subjected to overcrowding, lack of bedding, overcrowding together with lack of bedding, continuous light, and housing at 30°C. The influence of stress on relative caecal weight, faecal enterobacteriaceae, colonisation resistance (CR), filamentous segmented bacteria in the small intestine, fusiform bacteria in the faeces, and concentration of faecal bile acids was studied. Stress had no influence on relative caecal weight, faecal enterobacteriaceae, and faecal bile acids. Stress did decrease colonisation resistance, presence of segmented filamentous bacteria in the small intestine, and fusiform bacteria in the faeces. Cheese‐whey had no positive effect on the microbiological disturbances caused by stress. The number of filamentous segmented bacteria in the small intestine and fusiforms in the faeces decreased by giving cheese‐whey.

ISSN:0165-2176    

DOI:10.1080/01652176.1989.9694192

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

Eight‐month‐old Jersey bull calves given ivermectin intravenously or subcutaneously showed signs of depression, ataxia, difficulty in breathing, tachycardia, salivation, diarrhoea, miosis, and an increase in pseudocholinesterase activity. The clinical signs were severe in calves given the drug intravenously. The findings suggest that the cholinergic nervous system may be involved in some of the adverse effects of ivermectin observed in calves.

ISSN:0165-2176    

DOI:10.1080/01652176.1989.9694193

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

Two stocks of large Babesiae from dogs originating in France, transmitted by Dermacentor reticulatus, two from North Africa, havingRhipicephalus sanguineusas vector, and one from South Africa, transmitted by Haemaphysalis leachi, were compared in cross‐immunity tests in dogs and in the indirect fluorescent antibody test (IFAT).

ISSN:0165-2176    

DOI:10.1080/01652176.1989.9694194

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The present report describes a comparative study in dwarf goats on human IFN‐α2a (0.5 × 106IU kg‐1body weight IM), poly I: poly C (an interferon inducer; 30 pg kg‐1b.w. IV), andEscherichia coliendotoxin (an I1–1 inducer; 0. 1 μg kg‐1b.w. IV.

ISSN:0165-2176    

DOI:10.1080/01652176.1989.9694195

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

During the hunting season 1986–1987, 2859 gizzards from mallards shot in the Netherlands were collected. Gizzards were selected radiographically and examined visually for ingested lead shot. The 95% confidence interval of the prevalence of lead shot ingestion was calculated to be 1.7 to 2.9%. In some gizzards a large number of lead shot (12–16) were seen. This is an indication for locally heavily contaminated areas.

ISSN:0165-2176    

DOI:10.1080/01652176.1989.9694196

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

An infection with second‐stage larvae of the warble‐flyH. dianain a horse is described. The second‐stage larvae were incapable of developing into the third stage, because horses are unsuitable hosts and because the infected horse was treated with an insecticide. Since the horse was used for dragging trees in the forests, the infection was likely contracted via contact with H. diana, a normal parasite of roe deer in the Netherlands.

ISSN:0165-2176    

DOI:10.1080/01652176.1989.9694197

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The xanthines paraxanthine, xanthine, and uric acid are absorbed completely by the turtlePseudemys scripta elegansand metabolised presumably into CO2and NH3. No intermediate metabolites are excreted. Caffeine, hydroxycaffeine, theobromine, hydroxytheobromine, and hydroxyparaxanthine are absorbed and excreted in different amounts or percentages of the dose administered. Intermediate metabolites of these compounds are not excreted. The turtlePseudemys scripta elegansmay, therefore, be ammonotelic.

ISSN:0165-2176    

DOI:10.1080/01652176.1989.9694198

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor