Fatal hepatitis cysticercosa in a red deer fawn     

P.B. McKenna  I. Mackenzie  D.D. Heath 《New Zealand veterinary journal》2013,61(6)

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Cooperia pectinata (Nematoda: Trichostrongylidae) in New Zealand     

P. B. McKenna  W. A. G. Charleston  P. L. Hughes 《New Zealand veterinary journal》2013,61(3):26-27

Cooperia pectinata, a nematode parasite hitherto undetected in New Zealand, was recovered from the small intestine of a six-month-old red deer (Cervus elaphus) born on a deer farm in Taihape. The source of this infection is unknown but it seems likely that it originated from feral stock.  相似文献   

Further comparison of faecal egg count reduction test procedures: Sensitivity and specificity     

PB McKenna 《New Zealand veterinary journal》2013,61(6):365-366

Extract

In a recent communication (McKenna2006 McKenna, PB. 2006. A comparison of faecal egg count reduction test procedures. New Zealand Veterinary Journal, 54: 202–3. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]), a comparison was made between four different methods for calculating results from faecal egg count reduction (FECR) tests (FECRTs). The first and most complex of these, referred to as FECRT₁, involved the use of the formula: FECR = 100 × (1?[T2/T1][C1/C2]), where T1 and T2 represented the mean pre- and post-treatment faecal nematode egg counts (FECs) of a treated group, and C1 and C2 represented the mean pre- and post-treatment FECs of an untreated control group, respectively. The other three formulae consisted of more simplified versions of this procedure. In one of them (FECRT₂), only post-treatment samples were considered, whereas the other two were based on comparisons between the FECs of groups of animals sampled at the time of anthelmintic treatment (pre-treatment) with those sampled several days later (post-treatment). Thus, FECRT₂ was determined according to the formula: FECR = 100 × (1?[T2/C2]), while FECRT₃ was calculated from FECR = 100 × (1?[T2/T1]). The fourth procedure (FECRT₄) was based on a further simplification of FECRT₃ where pre-treatment FECs from only one treatment group were used for comparison with all post-treatment results. This base-line pre-treatment group thus effectively functioned as an untreated control group and hence the formula for FECRT₄ was FECR = 100 × (1?[T2/C1]).  相似文献   

Cats as hosts for sarcocystis of sheep     

G.H. Collins  W.A.G. Charleston  P.B. McKenna 《New Zealand veterinary journal》2013,61(8)

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Fatal ancylostomiasis in a dog     

P.B. McKenna B.Sc. Dip.Wild.Mgt  W.B. McPherson B.V.Sc.  Gwen J. Falconer 《New Zealand veterinary journal》2013,61(7):151-152

Abstract

Extract

Canine hookworm disease is a general term used to describe morbidity associated with infection by certain small-intestinal nematode parasites of dogs. It is now known, however, that there are at leastthree and possibly four species of canine hookworms and that these vary considerably in their pathogenicity (Miller, 1971 Miller, T. A. 1971. “Vaccination against the canine hookworm diseases”. In Advances in Parasitology, Edited by: Dawes, B. Vol. 9, 153–183. London: Academic Press.  [Google Scholar]). In New Zealand, the occurrence of only one of these species, Unoinaria stenocephalia, appears to be recorded in the literature although verbal reports of the existence of a second, Ancylostoma caninum, have been received occasionally. This report describes the occurrence of an A. caninum infection in a dog which resulted in what is believed to be the first recorded case of fatal ancylostomiasis in New Zealand.  相似文献   

Concurrent gastro-oesophageal intussusception,trichobezoar and hiatal hernia in a cat     

MC Owen  PJ Morris  RS Bateman 《New Zealand veterinary journal》2013,61(5):371-374

CASE HISTORY: An adult male Birman cat was evaluated for recurrent, intermittent vomiting or regurgitation, occasionally associated with abdominal discomfort.

CLINICAL FINDINGS AND DIAGNOSIS: Radiographs, including an oesophogram, indicated an oesophageal obstruction. Prior to treatment, the cat's condition deteriorated and it was euthanised at the owner's request. Post-mortem examination revealed a gastro-oesophageal intussusception, a trichobezoar impacted into the intussusceptum, and a dilated oesophageal hiatus consistent with a chronic hiatal hernia.

CLINICAL RELEVANCE: Gastro-oesophageal intussusception is a rare condition in cats. Its aetiology in relation to a pre-existing hiatal hernia and a trichobezoar is discussed.  相似文献   

Multigeneric Resistance to Benzimidazole Anthelmintics in Sheep     

P.B. McKenna 《New Zealand veterinary journal》2013,61(2):62-64

Benzimidazole resistance involving several gastrointestinal nematode genera on a single sheep farm in New Zealand is reported for the first time. A controlled slaughter trial showed that at the recommended dose rate of 12.5 mg/kg, mebendazole had efficacies of 0, 60, 66, 90, 54 and 38% against Haemonchus contortus, Ostertagia spp., Nematodirus spp., intestinal Trichostrongylus spp., Strongyloides spp. and Oesophagostomum venulosum, respectively. The relevance of such multigeneric resistance to possible future options for controlling anthelmintic resistant sheep trichostrongylids is briefly discussed.  相似文献   

The brown dog tick (Rhipicephalus sanguineus) on an imported dog     

P.B. McKenna B.SC DIP. WILD. MGT.  J.D. Tenquist  J. Ker M.R.C.V.S. 《New Zealand veterinary journal》2013,61(10)

Abstract

Extract

Sir, — We wish to record the presence of the tick Rhipicephalus sanguineus on a dog imported from Australia. This tick is mainly parasitic on dogs although on rare occasions it has been collected from non-canine hosts (Roberts, 1965 Roberts, F. H. S. 1965. The taxonomie status of the species of the genera Rhipicephalus (Koch) and Boophilus (Curtice) occurring in Australia. Aust. J. Zool., 13: 491–523.  [Google Scholar]). Experimentally it has been shown capable of transmitting a wide variety of serious diseases but its role as a natural vector of many of them is unknown. In Australia it has been demostrated as being naturally infected with Coxiella burnetii (Smith, 1942 Smith, D. J. W. 1942. Studies on the epidemiology of Q Fever. Aust. J. exp. Biol. med. Sci., 20: 295–296.  [Google Scholar]) and is recorded from all continents and some oceanic islands lying between latitudes 50°N and 36°S (Roberts, 1970 Roberts, F. H. S. 1970. Australian ticks, 87–87. CSIRO.  [Google Scholar]). Auckland falls within this boundaries and therefore it is not unreasonable to suggest that R. sanguineus could become established in New Zealand.  相似文献   

Mid‐gestation pregnancy is not disrupted by a 5‐day gastrointestinal mucosal cytoprotectant oral regimen of misoprostol     

C. C. JACOBSON  P. L. SERTICH  S. M. MC DONNELL 《Equine veterinary journal》2013,45(1):91-93

Reasons for performing study: To investigate effects of a 5‐day oral misoprostol regimen recommended for use in horses as a gastrointestinal mucosal cytoprotectant during colic on mid‐gestation pregnancies. Objectives: To monitor cervical tone, ultrasonographic characteristics of the uterus, cervix and conceptus, as well as serum progesterone and oestrone sulphate concentrations, and observations of general health, behaviour and comfort of mid‐gestation mares given a 5‐day course of misoprostol or control treatment. Methods: Eleven light horse and pony mares with known breeding dates were administered 5 µg/kg bwt misoprostol orally, twice daily for 5 days. General health and pregnancy status were monitored daily during treatment via general physical examination, as well as palpation and ultrasonography per rectum of the uterus, cervix and conceptus. Jugular serum was obtained during and for 5 days following treatment for assay of progesterone and oestrone sulphate concentrations. Additionally, daily 12 h video samples of the mares were obtained to evaluate behaviour and comfort. Results: All findings, including cervical tone, ultrasonographic characteristics of the uterus, cervix and conceptus, as well as progesterone and oestrone sulphate concentrations, and observations of general health, behaviour and comfort, were similar during misoprostol and control treatment. Conclusions: Treatment of pregnant mares with a gastrointestinal mucosal cytoprotectant regimen of oral misoprostol for 5 days did not disrupt pregnancy, nor adversely affect the general health and comfort of these mares. Additional investigation of treatment at earlier and later stages of gestation, for longer‐term treatment, as well as evaluating neonates for developmental disturbances, would add further information on safety of misoprostol during gestation. Potential relevance: These results provide some assurance of safety of a 5‐day gastrointestinal mucosal cytopretectant regimen of oral misprostol in mid‐gestation pregnant mares.  相似文献   

Evaluation of environmental fecal culture for Mycobacterium avium subspecies paratuberculosis detection in dairy herds and association with apparent within-herd prevalence     

Carrie J. Lavers  Shawn L.B. McKenna  Ian R. Dohoo  Herman W. Barkema  Greg P. Keefe 《The Canadian veterinary journal. La revue veterinaire canadienne》2013,54(11):1053-1060

This study evaluated test characteristics of environmental culture (EC) for the detection of Mycobacterium avium subspecies paratuberculosis (MAP) in 32 herds over a 2-year period. Individual fecal samples were collected every 6 mo and environmental samples every 3 mo. Individual fecal culture was performed on samples from positive pools. Samples were cultured in broth, with confirmatory polymerase chain reaction performed on positive fecal samples. Repeated measures were accounted for using GEE logistic models. Relative to a MAP herd-status based on all pooled fecal culture results collected during the study, sensitivity of a set of 6 EC-samples collected from prescribed locations within the herd environment (EC-6) was 71% [95% confidence interval (CI): 49% to 86%] and specificity was 99% (95% CI: 95% to 100%). Sensitivity of EC increased as apparent within-herd fecal culture prevalence (aWHP) increased. The estimated aWHP increased as the proportion of positive EC-samples within an EC-6 set increased. Environmental culture is an acceptable tool for herd diagnosis of MAP in low-prevalence herds.  相似文献