ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1991.tb03706.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1991.tb03707.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1991.tb03708.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1991.tb03709.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

SummaryThe clinical and radiographic findings in 21 ponies with laminitis and its treatment and results are described. All ponies received non‐steroidal anti‐inflammatory drugs. All were fed hay and no concentrates. They were box rested for varying periods depending on clinical improvement. Dorsal hoof wall resection was performed in 11 ponies and all regained complete soundness. To shorten the period of non‐activity, working ponies were shod and the hoof wall defect was packed with technovit or a combination of glue with cotton cuttings. Ten were treated conservatively; two recovered completely, four remained lame and four were killed because of recurrent lami

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1991.tb03710.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

SummarySera from 54 two‐ to three‐year‐old Thoroughbred horses from an English racing stable were examined for precipitins to antigen extracts prepared from 18 species of moulds (fungi and thermophilic actinomycetes) isolated from the same stable. Twenty‐seven horses exhibited serum precipitins to one or more antigens; sixteen of the mould antigens elicited positive reactions in sera from one or more horses. Significantly more precipitins occurred in sera of those horses stabled in a barn than among those stabled in individual boxes. This indicated a possible association between type of housing, level of exposure to airborne moulds and presence of serum precipitins. None of the horses had overt respiratory disease. This study agrees with reports of the presence of serum precipitating antibodies to mould antigens in clinically healthy horses and confirms that serological tests, therefore, are of little value in the diagnosis of chronic obstructive pulmonary disease (COPD) or

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1991.tb03711.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1991.tb03712.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

SummaryEight horses (mean weight 438 kg) with chronic obstructive pulmonary disease (COPD) were studied for clinical signs, ventilation/perfusion relationships (V̇A/Q̇) and lung morphology. Four horses were killed and necropsied after the study. In horses with COPD, minute ventilation was almost twice as high as normal, whereas PaO2was significantly decreased. Cardiac output was normal, but pulmonary artery pressure and pulmonary vascular resistance were significantly increased. The V̇A/Q̇ distribution was abnormal with an increased scatter of V̇A/Q̇ ratios. However, shunt (V̇A/Q̇=0) was increased in one horse only. Ventilation of dead space and high V̇A/Q̇ regions (V̇A/Q̇>10) were increased markedly and comprised 74 per cent of minute ventilation. On lung biopsy, all horses showed chronic bronchiolitis with epithelial hyperplasia and metaplasia. Diffuse acinar hyperinflation also was evident at necropsy. There was a significant inverse correlation between the respiratory rate and the fractional ventilation of normal V̇A/Q̇ regions. Also, there was a significant agreement between the extent of bronchiolar epithelial hyperplasia in necropsy specimens of lungs and the degree of ventilation of high V̇A/Q̇ regions and dead space. The findings suggest that hyperinflation of the lung due to obstructed airways may be the common denominator of increased ventilation of high V̇A/Q̇ regions and dead space ventilation and of elevated pulmonary artery pressure in horses with COPD from chro

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1991.tb03713.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

SummarySerial transabdominal amniocentesis was performed on eight mares in late gestation. Ultrasonography was used to identify the two placental fluid sacs and the foetus. A biopsy guide attached to the transducer allowed visualisation of the needle path during insertion. Amniotic fluid was obtained in 85 per cent of the attempts, although as mares approached parturition substantial pools of amniotic fluid were more difficult to locate. Two mares aborted during the study probably because of complications of the procedures, whereas six mares produced normal foals at term. The abortions preclude clinical use of this technique currently. However, there was sufficient success in retrieval of amniotic fluid and outcome of pregnancies to continue the study of amniocentesis in larger groups of mares to determine the clinical and research value of this technique.

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1991.tb03714.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

In this study a method of analysing ground reaction forces was developed to help in the diagnosis of subclinical flexor tendon injury. A Kistler force plate was used to obtain records from a population of Thoroughbreds in National Hunt training over a period of two years. Characteristic features of the force patterns generated were measured and shown to have low variance, both between horses and over a period of two racing seasons in animals that were sound throughout the trial. Specific changes in the loading pattern of the limb, which correlated with injury of the superficial digital flexor tendon, were identified from horses that sustained clinical injury during the study. Retrospective analysis showed that changes became apparent in the force patterns before this group of horses exhibited clinical lameness. This type of analysis provides an objective means of detecting tendon injury at an early stage.

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1991.tb03715.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY