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Australian Veterinary Journal

L G Hivert, J R Clarke, S J Peck, C Lawrence, W E Brown, S J Huxtable, D Schaap, D Pemberton, C E Grueber
BACKGROUND: The Tasmanian devil (Sarcophilus harrisii) is the world's largest extant marsupial carnivore. Since the emergence of devil facial tumour disease in 1996, the species has undergone a severe population decline. The insurance population (IP) was established in 2006 to build a disease-free captive population to maintain 95% of the wild Tasmanian devil genetic diversity for 50 years. Captive and semi-wild Tasmanian devils are fed with possum and wallaby meat provided by local hunters, who use lead ammunition...
November 2018: Australian Veterinary Journal
M Harcourt, C Smith, R Bell, A Young
CASE REPORT: We describe the radiographic and magnetic resonance imaging findings associated with a case of bilateral forelimb bipartite navicular disease in a 7-year-old Warmblood gelding used for eventing. In addition to the radiographically evident partitioned navicular bones, magnetic resonance imaging (MRI) also detected other concurrent abnormalities occurring within the foot that have not been described before in other cases of navicular bone partition. MRI not only revealed soft tissue lesions of the podotrochlear apparatus, but also allowed for more detailed characterisation of the recently diagnosed osseous navicular bone pathology...
November 2018: Australian Veterinary Journal
J Drew, M Glyde, G Hosgood, M Newman
BACKGROUND: Patella alta is the proximal displacement of the patella within the femoral trochlea. Previous studies have identified an association between patella alta and patella luxation. Distalisation of the tibial tuberosity has been recommended to establish proximodistal alignment of the stifle extensor mechanism with the underlying femur in dogs affected by patella alta. However, a recent canine ex vivo study found stifle extensor mechanism load increased significantly following tibial tuberosity distalisation...
November 2018: Australian Veterinary Journal
Rsp Johnson, P S Harlow, C A Phillips, Ejs Hall
OBJECTIVE: The aim of this study was to determine baseline reference data for morphometric measurements and haematological and plasma biochemical parameters in clinically healthy eastern water dragons (Intellagama lesueurii lesueurii), accounting for the variables of season and sex. The clinical objective was to provide clinicians and researchers with baseline reference intervals (RIs) in order to assess accurately the health of a population or individual animals. METHODS: The study group comprised 39 free-ranging eastern water dragons...
November 2018: Australian Veterinary Journal
L N Warne, S H Bauquier, J Pengelly, D Neck, G Swinney
No abstract text is available yet for this article.
November 2018: Australian Veterinary Journal
R N White, A T Parry, C Shales
OBJECTIVE: To describe the implications of extrahepatic portosystemic shunt morphology for the chosen site of shunt closure in dogs and cats. METHODS: A retrospective review of a consecutive series of dogs and cats managed for congenital extrahepatic portosystemic shunts. RESULTS: In total, 54 dogs and 10 cats met the inclusion criteria, revealing five distinct shunt types: left gastrophrenic, right gastrocaval (types Ai, Aii and Aiii), splenocaval, colocaval and left gastro-azygos...
November 2018: Australian Veterinary Journal
G J Judson, B A McGregor, K J Ellis, A M Howse
OBJECTIVE: To assess the effectiveness of controlled-release devices (CRDs) for providing zinc and for estimating faecal output in alpacas and sheep at pasture. METHODS: The study groups of 10 alpacas and 10 sheep at pasture were paired within species and allocated at random to receive by mouth either one CRD containing chromium sesquioxide designed to function for at least 21 days or two CRDs, one containing chromium sesquioxide and the other zinc oxide designed to release over a nominal 60-day period...
November 2018: Australian Veterinary Journal
N M Collins, J B Carrick, C M Russell, J E Axon
OBJECTIVE: To evaluate hypernatraemia in foals presenting as medical emergencies to an intensive care unit (ICU) to determine the prevalence, clinical findings, primary diagnosis and outcome. METHODS: Retrospective case study of records from Thoroughbred foals aged less than 3 months that presented to an ICU as medical emergencies in 2002-12. Data retrieved included signalment, clinical findings, laboratory results, primary diagnosis and outcome. Foals with hypernatraemia (serum sodium > 145 mmol/L) on admission laboratory data were identified and further evaluated...
October 2018: Australian Veterinary Journal
M H Hawes, I J Gill
CASE REPORT: Ingestion of pomegranates was associated with the deaths of 9 of 35 young cattle; 8 were found dead without any prior clinical signs being noted and 1 animal was observed to be weak with pale-pink mucous membranes. Gross pathological changes included widespread subcutaneous and serosal haemorrhages and the liver showed an enhanced acinar or 'nutmeg-like' pattern. The significant histopathological lesion was severe, acute periacinar to midzonal hepatocellular necrosis. These findings were considered characteristic of a hepatotoxicosis; however, other than the possible involvement of pomegranates, no known hepatotoxins were detected in the pasture or water sources...
October 2018: Australian Veterinary Journal
Nick Scott
No abstract text is available yet for this article.
October 2018: Australian Veterinary Journal
W Yang, G Hosgood, K Luobikis, A Paul
OBJECTIVES: To determine the agreement, sensitivity, specificity and accuracy of prothrombin (PT) and activated partial thromboplastin time (aPTT) using the point-of-care analyser SCA2000™ with IDEXX Coag Dx™ cartridges against a reference laboratory (STAGO Start 4®) in canine blood. METHODS: Citrated blood samples from 47 dogs were submitted for PT and aPTT measurements. The STAGO was taken as the gold standard and sensitivity, specificity and accuracy were calculated...
October 2018: Australian Veterinary Journal
K A Mander, J W Finnie
In order for a tumour to continue to grow and disseminate, it must acquire a new blood supply. Neovascularisation can be enacted by a number of different mechanisms. This dependence of tumour progression on an augmented vascular supply has been exploited by the development of anti-angiogenic drugs, which are designed to inhibit new blood vessel formation or disrupt existing tumour-associated vasculature, both leading to ischaemic-hypoxic tumour cell death. However, the clinical benefits of these therapeutic approaches are frequently variable and often transient, the neoplasm sometimes being able to use other neovascularisation mechanisms to maintain its blood supply and thus evade the current anti-angiogenic therapy...
October 2018: Australian Veterinary Journal
M B Allworth, J R Egerton
OBJECTIVE: To assess ability to eliminate different strains of footrot in sheep using inspection and culling of affected sheep. METHODS: A flock of 1417 Polwarth sheep that had deliberately been infected with seven different strains of Dichelobacter nodosus and undergone different control measures prior to eradication, including zinc sulfate footbathing and vaccination, were subjected to visual foot inspection on a number of occasions. Sheep identified as infected or having any foot abnormalities were removed from the flock at each inspection...
October 2018: Australian Veterinary Journal
C Turni, R Singh, P J Blackall
OBJECTIVE: To investigate the genotype and diversity of Pasteurella multocida present in pig herds and to determine the extent of overlap with isolates from poultry flocks in Australia. METHODS: A total of 43 isolates from pigs from different farms and regions of Australia were used in this study. A diverse collection of 41 poultry isolates, with 31 being previously characterised, was also used. The pig isolates and 10 poultry isolates were identified by species-specific PCR assay, serotyped by the Heddleston scheme and genotyped by a multiplex PCR based on the lipopolysaccharide (LPS) outer core biosynthesis locus, repetitive element PCR fingerprinting (rep-PCR) and multilocus sequence typing (MLST), with the latter being used on a subset of the isolates based on the rep-PCR results...
October 2018: Australian Veterinary Journal
M B Allworth, J R Egerton
OBJECTIVE: Compare footbathing and vaccination for control of footrot during a transmission period in a sheep flock deliberately infected with multiple strains of Dichelobacter nodosus. METHODS: The strains included a known virulent strain, a benign strain and several intermediate strains. The resulting footrot was clinically intermediate. A total of 1450 Polwarth sheep aged 1-3 years were allocated to one of five treatment groups: untreated, weekly walkthrough zinc sulfate footbathing, 1-hour stand-in Footrite® footbathing every 3 weeks, vaccination with a commercial multivalent whole-cell vaccine and vaccination with a novel recombinant DNA fimbrial vaccine...
October 2018: Australian Veterinary Journal
J Cavalieri, C Gaina, G Hepworth
OBJECTIVE: To investigate the effect of concentration of progesterone (P4) before artificial insemination (AI) on fertility in ovulatory or anovulatory Bos indicus cattle. DESIGN: Randomised control study METHODS: The study included 162 heifers and 96 lactating cows. On days -10 to -12, animals were examined using transrectal ultrasound, administered PG and examined for a corpus luteum (CL). Those with a CL were allocated to Experiment 1. On day 0 they were administered an intravaginal progesterone-releasing device (IVD) containing progesterone (P4) (0...
September 2018: Australian Veterinary Journal
J R Hill, J Wilkinson, J Mallyon, S T Anderson
BACKGROUND: Anti-Mullerian hormone (AMH) is currently used in several species as an indicator of the number of antral and pre-antral follicles within the ovaries. Currently, there is some uncertainty on the precision of a single AMH test for detecting the presence of ovarian tissue in prepubertal, pubertal and spayed bitches. The purpose of this study was to investigate the specificity of AMH levels determined using the Gen II AMH ELISA to detect the presence or absence of ovarian tissue in bitches of varying ages...
September 2018: Australian Veterinary Journal
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