ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1986.tb03676.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1986.tb03677.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1986.tb03678.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

摘要:

SummaryThe case records, radiographs and treatment results of 47 consecutive equine radius fractures presented to The Ohio State University Veterinary Hospital from 1975 to 1985 were examined retrospectively. Chip fractures and incomplete fractures were not considered. Both diaphyseal fractures and fractures involving the physes were included. Diaphyseal fractures were placed into three major categories: comminuted, oblique and transverse; and subclassified as proximal, middiaphyseal, or distal. Fractures involving a physis were classified using the Salter‐Harris classification system. The horses ranged in age from one day to 19 years old. Nineteen of the patients were destroyed humanely on presentation, and 28 were treated. Twenty‐four of the 28 fractures treated were repaired by open reduction and internal fixation. Success rate was related to the age of the horse and the type of fracture. Adult radius fractures have a poor prognosis. Most fractures in foals are either physeal fractures or transverse or oblique diaphyseal fractures and have an excellent to good prognosis when repaired adequat

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1986.tb03679.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

摘要:

SummaryPlasma progesterone levels were measured daily to determine the accuracy of diagnosing ovulation by rectal palpation carried out every other day; 81.5 per cent mares injected with human chorionic gonadotrophin showed increases of progesterone more than 1 ng/ml by 72 h after injection compared with 65 per cent of mares injected with gonadotrophin releasing hormone (GnRH) or saline. Mating at ovulation achieved a 74 per cent pregnancy rate in mares given hCG compared with 50 per cent given GnRH and 45 per cent controls. Diagnosis of ovulation per rectum on the basis of a pit in the ovarian surface or the presence of a soft friable structure was found to be accurate in 91 per cent of cases. Diagnosis based on the presence of a firm plum‐like structure or the disappearance of a previously identified follicle at a given site was 60 per cent accurate. In cases of rectal diagnosis of non‐ovulation 38 per cent had actually ovulated based on a rise in progesterone more than 1 ng/ml and a further 19 per cent showed a rise in progesterone by 24 h after the diagnosis. The use of hCG may improve conception rates by synchronisation of ovulation and mating and where rectal palpation of the ovaries remains the only basis for timed mat

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1986.tb03680.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1986.tb03681.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

摘要:

SummaryThe technique of navicular suspensory desmotomy for the treatment of navicular disease is described and the rationale behind its development is discussed. To date 16 horses involved in a clinical evaluation of the technique have been assessed six months after surgery. Thirteen of these horses are able to work without lameness.

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1986.tb03682.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1986.tb03683.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

摘要:

SummarySeasonal rises in mean faecal egg output were observed in grazing ponies in spring (578 eggs per gram) and in summer (930 epg) on 30 April and 2 September, respectively, in untreated ponies. Pasture infectivity reached a peak of 18,486 third stage larvae (L3)/kg on 17 September, two weeks after peak egg counts, coincidental with abundant September rainfall (103.0 mm). Differentiation of infective larvae from pasture showed the cyathostomes (small strongyles) to be predominant, butTrichostrongylus axeiassumed major importance from late August to October. The large strongyles were rarely detected:Strongylus vulgariswas found only once andS edentatusonly twice. The most effective parasite prophylaxis was achieved by twice weekly removal of faeces. In this group, concentrations of infective L3 on pasture reached a maximum of 1000 L3/kg, compared to 18,486 L3/kg for a control group and 4850 to 10,210 L3/kg for anthelmintic treatment groups. The removal of faeces increased the grazing area by about 50 per cent, by eliminating the characteristic separation of horse pasture into roughs and lawns. Spring and summer anthelmintic treatments of mature ponies with oxibendazole were effective in reducing the late season rise in pasture infectivity to 4850 L3/kg, but treatment of young ponies (mainly yearlings) with ivermectin every eight weeks or oxibendazole every four weeks resulted in pasture infectivity as high as 10,000 L3/kg. There was evidence of cyathostome resistance to benzimidazole drugs.

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1986.tb03684.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY

ISSN:0425-1644    

DOI:10.1111/j.2042-3306.1986.tb03685.x

出版商:Blackwell Publishing Ltd    

年代:1986

数据来源: WILEY