Survey of equine castration techniques,preferences and outcomes among Australian veterinarians          下载免费PDF全文

CD Owens  KJ Hughes  BJ Hilbert  J Heller  S Nielsen  GD Trope 《Australian veterinary journal》2018,96(1-2):39-45

Objectives

(1) To collect the perceptions of veterinarians performing equine castrations in Australia on techniques, preferences and outcomes, (2) to investigate veterinarian use and experience with the Henderson castrating instrument and (3) to investigate potential associations between demographics, castration methods and techniques, and complications.

Design

Online survey of members of the Australian Veterinary Association’s Special Interest Group, Equine Veterinarians Australia (EVA).

Methods

A link to the survey was included in the EVA e‐newsletter and practices on the EVA website were contacted by telephone and follow‐up email. Fisher’s exact test was used to determine associations between ligation and complications. A generalised linear model with a negative binomial family was used to determine associations between count response variables and categorical independent variables.

Results

Responses were obtained from 138 veterinarians (response rate, 13.1%) who performed 5330 castrations over 12 months. Castrations were most commonly performed in the field, on anaesthetised horses, using emasculators, via an open approach and without ligation of the spermatic cord. Estimated complications after use of emasculators were swelling (25%), haemorrhage (5%) and infection (5%). The Henderson instrument was used by approximately 10% of respondents and its use for castration was associated with fewer reports of postoperative swelling compared with emasculators (P = 0.002). Rates of evisceration with the Henderson and emasculator methods were comparable (0.43% and 0.9%, respectively).

Conclusion

Castration preferences varied widely among survey participants. Reported complication types and rates were comparable to those reported previously in other countries. Perceptions that the Henderson instrument was associated with less swelling should be investigated further via a prospective controlled investigation.  相似文献   

A further study of the epidemiology of ovine fascioliasis in Scotland and its control using molluscicide     

R G Bruce  J Armour  J Corba 《The Veterinary record》1973,92(20):518-526

  相似文献   

Pathophysiology of the periparturient egg rise in sheep: the role of prolactin     

I A Jeffcoate  G Fishwick  K Bairden  J Armour  P H Holmes 《Research in veterinary science》1990,48(3):295-300

The involvement of prolactin in the periparturient rise in the faecal nematode egg count in sheep was investigated. Ostertagia circumcincta larvae (5000 third stage larvae three times weekly) were administered to adult immune ewes from three weeks before parturition to three weeks afterwards. Ten ewes were injected twice daily with 2-bromo-alpha-ergocryptine (bromocriptine), an antagonist of prolactin secretion, for two weeks starting two days after lambing while 10 ewes remained untreated. Bromocriptine treatment was initiated approximately two weeks pre partum in three other ewes. Plasma pepsinogen concentrations rose significantly by one week after the start of O circumcincta larval challenge in all the ewes but faecal egg counts remained negative until approximately one week post partum. Plasma prolactin concentration was reduced to a very low level in all bromocriptine treated ewes but this did not alter the dynamics of the periparturient rise in faecal egg counts. Neither cell-mediated nor humoral immunity of the ewes, as assessed by their sensitivity to BCG inoculation and by antibody titre raised against horse red blood cells, respectively, were impaired during the rise in faecal egg count, nor were these parameters altered by manipulation of plasma prolactin concentration. Lamb growth rate was not retarded by low plasma prolactin concentration in the bromocriptine treated ewes. These results are not consistent with the generally held hypothesis that elevated plasma prolactin concentration is directly associated with the periparturient rise.  相似文献   

Transfer of immunity to Fasciola hepatica infection by lymphoid cells   总被引：2，自引：0，他引：2  

J Corba  J Armour  R J Roberts  G M Urquhart 《Research in veterinary science》1971,12(3):292-295

  相似文献   

Production of strains of the sheep parasite Ostertagia circumcincta by implantation of adult parasites into the abomasum of lambs     

E W Scott  Q A McKellar  J Armour  K Bairden  J A Bogan 《Research in veterinary science》1988,45(1):120-121

The implantation of a single pair of adult parasites of Ostertagia circumcincta via the abomasa of four lambs resulted in the production of 19, 53, 393 and 425 viable larvae after faecal culture using faeces collected from day 6 to day 20 after implantation. Implantation of a single female parasite into two lambs failed to produce larvae.  相似文献   

Nematodirus battus infection in calves     

K Bairden  J Armour 《The Veterinary record》1987,121(14):326-328

In studies on the control of parasitic gastroenteritis in calves and sheep, involving an annual rotation of pastures grazed by these host species, it was shown that young cattle could play an important role in the epidemiology of Nematodirus battus, a species usually regarded as a parasite of lambs. Thus, young cattle readily acquired heavy burdens of N battus in spring and the contamination of pastures with eggs from these infections resulted in significant populations of larvae on the herbage, which were infective to both calves and lambs grazed on these pastures in the following year. Although the majority of the N battus eggs hatched in the spring, some hatched in the autumn. The calves developed a strong immunity to N battus during the grazing season as demonstrated by the absence of worms at necropsy in the autumn, despite the presence of infective larvae on the pasture.  相似文献   

Human and animal endoparasites: Chairman's opening remarks     

James Armour 《Pest management science》1977,8(5):534-535

  相似文献   

The anthelmintic efficiency of diamphenethide against Fasciola hepatica in sheep     

J Armour  J Corba 《The Veterinary record》1972,91(9):211-213

  相似文献   

Bovine ostertagiasis: a review   总被引：1，自引：0，他引：1  

J Armour 《The Veterinary record》1970,86(7):184-190

  相似文献   

Bovine ostertagiasis: a changing epidemiological pattern?     

K Bairden  J J Parkins  J Armour 《The Veterinary record》1979,105(2):33-35

An unusual epidemiological pattern in bovine ostertagiasis is described in which clinical ostertagiasis occurred in calves grazed on a silage aftermath from late July. The calves were treated with the anthelmintic levamisole prior to grazing the aftermath and the latter had not been grazed since the previous autumn. Analysis of the herbage larval counts suggests that delayed emergence of overwintered Ostertagia ostertagi L3 from the soil was the most likely source of the infection.  相似文献