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    8684 results match your criteria Australian Veterinary Journal [Journal]

    1 OF 174

    Investigation of the effect of Equivac® HeV Hendra virus vaccination on Thoroughbred racing performance.
    Aust Vet J 2018 Feb 4. Epub 2018 Feb 4.
    Sydney School of Veterinary Science, The University of Sydney, 425 Werombi Road, Camden, New South Wales 2570, Australia.
    Objective: To evaluate the effect of Equivac® HeV Hendra virus vaccine on Thoroughbred racing performance.

    Design: Retrospective pre-post intervention study.

    Methods: Thoroughbreds with at least one start at one of six major south-eastern Queensland race tracks between 1 July 2012 and 31 December 2016 and with starts in the 3-month periods before and after Hendra virus vaccinations were identified. Read More

    Modified rib pivot lateral thoracotomy: a case series.
    Aust Vet J 2018 Jan;96(1-2):28-32
    College of Veterinary Medicine, Murdoch University, Perth, Australia.
    Objective: To describe a modified rib pivot thoracotomy and its clinical application in client-owned dogs and cats.

    Study Design: Case series of 24 dogs and 1 cat requiring a thoracotomy.

    Methods: A lateral thoracic incision over the required thoracic segment was made. Read More

    Genetic diversity and toxin gene distribution among serovars of Actinobacillus pleuropneumoniae from Australian pigs.
    Aust Vet J 2018 Jan;96(1-2):17-23
    EcoSciences Precinct, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Boggo Road, Dutton Park, Queensland 4102, Australia.
    Objective: To explore the diversity among isolates of the Actinobacillus pleuropneumoniae serovars most common in Australia (serovars 1, 5, 7 and 15) and to examine the Apx toxin profiles in selected representative isolates.

    Design: A total of 250 isolates selected from different farms were examined for their genotypic profiles and a subset of 122 isolates for their toxin profiles.

    Methods: The isolates of serovars 1, 5, 7 and 15 selected for this study came from different farms and different Australian states and were submitted for serotyping to the reference laboratory. Read More

    Australian veterinarians - global challenges.
    Aust Vet J 2018 Jan 22;96(1-2):4-10. Epub 2017 Dec 22.
    The Office of the Australian Chief Veterinary Officer (ACVO), Department of Agriculture and Water Resources, GPO Box 858, Canberra, Australia Capital Territory, 2601, Australia.
    This paper discusses the wide range of roles that Government veterinarians play both in Australia and globally. The paper was presented as a plenary session at the National Australian Veterinary Association Annual Conference. Read More

    Survey of equine castration techniques, preferences and outcomes among Australian veterinarians.
    Aust Vet J 2018 Jan 19;96(1-2):39-45. Epub 2017 Dec 19.
    School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia.
    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. Read More

    Effect of reducing inspired oxygen concentration on oxygenation parameters during general anaesthesia in horses in lateral or dorsal recumbency.
    Aust Vet J 2018 Jan 19;96(1-2):46-53. Epub 2017 Dec 19.
    Research and Clinical Trials Unit, University Veterinary Teaching Hospital Camden, School of Veterinary Science, University of Sydney, 410 Werombi Road, Camden, New South Wales, 2570, Australia.
    Objective: To compare the effects of two concentrations of oxygen delivered to the anaesthetic breathing circuit on oxygenation in mechanically ventilated horses anaesthetised with isoflurane and positioned in dorsal or lateral recumbency.

    Methods: Selected respiratory parameters and blood lactate were measured and oxygenation indices calculated, before and during general anaesthesia, in 24 laterally or dorsally recumbent horses. Horses were randomly assigned to receive 100% or 60% oxygen during anaesthesia. Read More

    Genome sequence of an Australian strain of canid alphaherpesvirus 1.
    Aust Vet J 2018 Jan 19;96(1-2):24-27. Epub 2017 Dec 19.
    School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia.
    Objective: Characterisation of a complete genome sequence of an Australian strain of canid alphaherpesvirus 1 (CHV-1) and its phylogenetic relationship with other varicellovirus species.

    Methods: Standard pathology and PCR methods were used to initially detect herpesvirus in hepatic tissue from an infected 4-week-old Labrador Retriever puppy. The complete CHV-1 genome was sequenced using next-generation sequencing technology followed by de novo and reference assembly, and genome annotation. Read More

    Cross-sectional survey of health management and prevalence of vector-borne diseases, endoparasites and ectoparasites in Samoan dogs.
    Aust Vet J 2017 Dec;95(12):462-468
    Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand.
    Objective: To determine the prevalence of selected canine vector-borne diseases (Leishmania infantum, Anaplasma spp., Ehrlichia canis, Borrelia burgdorferi and Dirofilaria immitis) and endo- and ectoparasites in Samoan dogs presenting for surgical sterilisation and to report on the general health management of the dogs.

    Methods: This study was a prospective serological cross-sectional survey. Read More

    Initial steps in defining the environment of the prepuce of the bull by measuring pH and temperature.
    Aust Vet J 2017 Dec;95(12):480-482
    Department of Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, Alabama, USA.
    Objective: To determine the baseline pH and temperature of the preputial cavity of bulls.

    Methods: We enrolled 55 bulls ranging in age from 15 to 84 months. The preputial temperature and pH were measured by insertion of temperature and pH probes, respectively, into the preputial orifice prior to routine breeding soundness examinations. Read More

    Evaluation of Australian surveillance for freedom from bovine tuberculosis.
    Aust Vet J 2017 Dec;95(12):474-479
    Animal Health Australia, 95 Northbourne Avenue, Turner, Australia Capital Territory 2612, Australia.
    Background: Australia declared freedom from bovine tuberculosis (TB) in accordance with international guidelines in 1997 and has since maintained ongoing surveillance for this disease, primarily through abattoir surveillance of cattle carcases (meat inspection) for TB-like granulomas. The objectives of this study were to estimate the sensitivity of Australia's surveillance system and quantify the probability that Australia is free from bovine TB at the specified design prevalence.

    Methods: The analysis included approximately 80 million records of individual cattle slaughtered and meat inspected at Australian abattoirs between 2005 and 2015 calendar years. Read More

    Dorsal surgical stabilisation using tension bands for treatment of traumatic atlanto-occipital instability in a cat.
    Aust Vet J 2017 Dec;95(12):469-473
    University College of Dublin, Veterinary Teaching Hospital, Dublin, Ireland.
    Case Report: An atlanto-occipital instability secondary to a dog bite was diagnosed in a 4-year-old Persian cat. Dorsal stabilisation of the instability was made with two OrthoFiber prostheses (Securos), which were used as tension bands between the nuchal crests of the occipital bone and the spinous process of the axis. Total recovery was achieved 4 days after surgery. Read More

    Beak and feather disease virus carriage by Knemidocoptes pilae in a sulphur-crested cockatoo (Cacatua galerita).
    Aust Vet J 2017 Dec;95(12):486-489
    School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia.
    Background: This paper describes the pathology associated with psittacine beak and feather disease in a wild sulphur-crested cockatoo with concurrent knemidocoptic mange, cestodiasis and mycotic encephalitis.

    Methods & Results: Large numbers of Knemidocoptes pilae Lavoipierre and Griffiths, 1951 (Acari: Epidermoptidae, Knemidokoptinae) were identified in affected skin associated with enhanced expression of beak and feather disease virus (BFDV) determined by immunohistochemistry. Also, BFDV antigen was demonstrated in high concentration in the gut and faecal sacs of mites, raising the possibility of ectoparasites as fomites and vectors of BFDV transmission. Read More

    Isolation of [Actinobacillus] rossii from an aborted piglet.
    Aust Vet J 2017 Dec;95(12):483-485
    Elizabeth Macarthur Agricultural Institute, Menangle, New South Wales, Australia.
    Case Report: This report describes an investigation into the cause of abortions on a commercial pig farm in Victoria in October 2015 in which six sows aborted over a 2-month period. Four of the abortions occurred in the 3 weeks prior to the sows' anticipated farrowing dates and the other two occurred in the second trimester of pregnancy. An analysis of farm data showed that the abortion rate in the previous 12 months (2014-15) was more than twice that of the previous 2 years (1. Read More

    Equine gestational length and location: is there more that the research could be telling us?
    Aust Vet J 2017 Dec;95(12):454-461
    CSIRO Agriculture, FD McMaster Laboratory, New England Highway, Armidale, New South Wales, Australia.
    Clear definitions of 'normal' equine gestation length (GL) are elusive, with GL being subject to a considerable number of internal and external variables that have confounded interpretation and estimation of GL for over 50 years. Consequently, the mean GL of 340 days first established by Rossdale in 1967 for Thoroughbred horses in northern Europe continues to be the benchmark value referenced by veterinarians, breeders and researchers worldwide. Application of a 95% confidence limit to reported GL range values indicates a possible connection between geographic location and GL. Read More

    Analysis of the costs of veterinary education and factors associated with financial stress among veterinary students in Australia.
    Aust Vet J 2018 Jan 12;96(1-2):11-16. Epub 2017 Dec 12.
    Veterinary Practitioners Board of NSW, Sydney, NSW, Australia.
    Objective: To investigate the course-related and other costs involved in obtaining a veterinary education in Australia and how these costs are met. The study also aimed to identify sociodemographic and course-related factors associated with increased financial stress.

    Methods: Students from seven Australian veterinary schools were surveyed using an online questionnaire. Read More

    Successful medical management of pseudomembranous cystitis in three cats with lower urinary tract obstruction.
    Aust Vet J 2018 Jan 10;96(1-2):33-38. Epub 2017 Dec 10.
    Hospital Clínic Veterinari, Universitat Autònoma de Barcelona, Spain.
    Case Report: The present case series describes the clinical course and outcome of three cats diagnosed with pseudomembranous cystitis. This is an uncommon presentation of lower urinary tract obstruction but can be easily be identified by ultrasonography, revealing severe bladder wall thickening and thin hyperechoic luminal strips. The condition can be secondary to severe bacterial urinary tract infection. Read More

    One Health, veterinarians and the nexus between disease and food security.
    Aust Vet J 2017 Dec 8;95(12):451-453. Epub 2017 Nov 8.
    School of Veterinary Science, School of Life and Environmental Sciences, Charles Perkins Centre and the Marie Bashir Institute, University of Sydney, Australia.
    Achieving ecologically sustainable food systems for people and animals is one of the greatest challenges facing our world today. Four interdisciplinary approaches that promote a holistic, systems approach to disease prevention and food security are introduced. Current domestic and international initiatives that link disease prevention with food and nutrition security are presented, with an emphasis on animal-source food and examples from Australia, Tanzania and Timor-Leste. Read More

    Pulmonary adiaspiromycosis in critically endangered northern hairy-nosed wombats (Lasiorhinus krefftii).
    Aust Vet J 2017 Nov;95(11):431-436
    The University of Queensland School of Veterinary Science, Gatton Campus, Gatton, Queensland 4343, Australia.
    Background: The northern hairy-nosed wombat (Lasiorhinus krefftii) is critically endangered, with only 200 individuals remaining in the wild. Individuals are rarely available for detailed pathological assessment and identification of disease threats to individuals is critically important to species conservation.

    Case Report: Two male northern hairy-nosed wombats, part of the Richard Underwood Nature Refuge population, were presented for necropsy, 5 months apart. Read More

    Factors affecting colostrum quality in Australian pasture-based dairy herds.
    Aust Vet J 2017 Nov;95(11):421-426
    The Vet Group, Timboon, VIC, Australia.
    Objective: The aim of this study was to identify factors affecting colostrum quality in dairy cattle.

    Methods: Colostrum samples were collected from lactating dairy cows (n = 990) from nine commercial dairy herds in south-west Victoria. Colostrum quality was measured using an optical Brix refractometer. Read More

    Examination of the use of intraovarian administration of CaCland zinc gluconate as potential chemosterilants in Bos indicus heifers.
    Aust Vet J 2017 Nov;95(11):403-415
    College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland 4811, Australia.
    Objective: To investigate if administration of potential chemosterilants by transvaginal, ultrasound-guided intraovarian injection is an alternative to surgical sterilisation.

    Design: Randomised control study.

    Methods: Bos indicus heifers were treated with intraovarian injections of saline (n = 10), CaCl(n = 10), zinc gluconate (ZG; n = 10) or a combination of CaCland ZG (CaCl+ ZG; n = 10). Read More

    Metastatic mineralisation caused by vitamin D intoxication in hand-raised short-beaked echidnas (Tachyglossus aculeatus).
    Aust Vet J 2017 Nov;95(11):427-430
    Gribbles Pathology, Clayton, VIC, Australia.
    Case Report: Two cases of metastatic mineralisation caused by dietary excess of vitamin D are reported in hand-raised short-beaked echidna (Tachyglossus aculeatus) puggles at the Australian Wildlife Health Centre. Oversupplementation was attributed to excessive levels of vitamin D in Wombaroo Echidna Milk Replacer fed to the puggles. No information exists regarding the naturally occurring vitamin D levels in echidna milk, but, given the low serum levels that have been observed in free-ranging animals, it is likely to be low. Read More

    Elevated serum creatinine and hyponatraemia as prognostic factors in canine acute pancreatitis.
    Aust Vet J 2017 Nov;95(11):444-447
    Veterinary Teaching Hospital "Mario Modenato", Department of Veterinary Sciences, University of Pisa, via Livornese Lato monte, San Piero a Grado, 56122 Pisa, Italy.
    Objective: To evaluate prognostic factors for canine acute pancreatitis (AP) based on clinical and laboratory data that can be easily assessed in veterinary practice.

    Design: Retrospective study between January 2010 and December 2013.

    Methods: The diagnosis of AP was based on clinical signs and an abnormal SNAP® cPL™ test result, concurrently with an ultrasound pattern suggestive of pancreatitis. Read More

    Horse-keeping practices in Australia: findings from a national online survey of horse owners.
    Aust Vet J 2017 Nov;95(11):437-443
    School of Environmental and Rural Science, University of New England, Armidale, New South Wales, Australia.
    Objective: To gain an understanding of general horse-keeping practices in Australia, including shelter, social contact, exercise, watering and supplementary feeding.

    Methods: An online survey was conducted with 505 owners in relation to one 'representative' horse in their care.

    Results: The majority (83%) of horses were managed at pasture. Read More

    Prevalence of subchondral bone pathological changes in the distal metacarpi/metatarsi of racing Thoroughbred horses.
    Aust Vet J 2017 Oct;95(10):362-369
    Faculty of Veterinary and Agricultural Sciences, University of Melbourne, 250 Princes Hwy, Werribee 3030, Victoria, Australia.
    Objectives: To investigate the prevalence of microscopic subchondral bone injury in the distal metacarpi/tarsi of Thoroughbred racehorses and associations with recent and cumulative training history.

    Methods: Metacarpi/metatarsi were obtained from postmortem examination of Thoroughbred racehorses. The severity of palmar/plantar osteochondral disease (POD) was graded in forelimbs from 38 horses and in hindlimbs from a separate cohort of 45 horses. Read More

    Incidence of laminitis and survey of dietary and management practices in pleasure horses and ponies in south-eastern Australia.
    Aust Vet J 2017 Oct;95(10):370-374
    Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Werribee, Victoria, Australia.
    Objectives: The aims of this study were to (1) report the incidence of laminitis among a population of horses and ponies attending Pony Clubs in Victoria, Australia, and (2) describe the dietary and management practices of the sample population.

    Methods: Researchers visited 10 Pony Clubs over a 10-month period. Horse and pony owners completed a questionnaire to provide information on management relating to diet and exercise. Read More

    Prevalence of exon 11 internal tandem duplications in the C-KIT proto-oncogene in Australian canine mast cell tumours.
    Aust Vet J 2017 Oct;95(10):386-391
    School of Animal and Veterinary Sciences (SAVS), University of Adelaide, Roseworthy 5371, South Australia, Australia.
    Objective: To measure the prevalence of internal tandem duplications (ITDs) in exon 11 of the proto-oncogene C-KIT in a sample of Australian cutaneous canine mast cell tumours (MCTs) drawn from general practice and to evaluate relationships between tumour mutation status and prognostic factors including signalment, tumour histological grade, tumour anatomical location and tumour size.

    Methods: C-KIT exon 11 ITDs were detected by PCR in DNA extracted from formalin-fixed, paraffin-embedded canine MCTs sourced from three veterinary diagnostic laboratories in Adelaide and Melbourne. Tumours were graded according to two different systems (Patnaik and Kiupel systems) by board-certified anatomical pathologists blinded to the PCR results. Read More

    Survey of systemic antimicrobial prescribing for dogs by Victorian veterinarians.
    Aust Vet J 2017 Oct;95(10):375-385
    Translational Research and Animal Clinical Trials Group (TRACTs), Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, 250 Princes Highway, Werribee 3030, Victoria, Australia.
    Objective: Investigate the current antimicrobial prescribing patterns of veterinarians in Victoria for dogs and compare these results to patterns described 20 years ago.

    Methods: A questionnaire was sent to 1380 veterinarians in Victoria. The first section collected demographic information of respondents. Read More

    An unusual mortality event in Johnstone River snapping turtles Elseya irwini (Johnstone) in Far North Queensland, Australia.
    Aust Vet J 2017 Oct;95(10):355-361
    College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland 4811, Australia.
    Background: An unusual mortality event in Johnstone River snapping turtles (Elseya irwini) in Far North Queensland, Australia, occurred during the summer months of December 2014 and January 2015. We report the data collected during the mortality event, including counts of sick and dead animals, clinical appearance and one necropsy.

    Outbreak Description: Moribund animals appeared lethargic with variable degrees of necrotising dermatitis. Read More

    Survey of Victorian small ruminant herds for mycoplasmas associated with contagious agalactia and molecular characterisation of Mycoplasma mycoides subspecies capri isolates from one herd.
    Aust Vet J 2017 Oct;95(10):392-400
    Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia.
    Objective: Regarded as one of the most expensive production diseases of dairy sheep and goats, contagious agalactia (CA) is caused by any of four agents: Mycoplasma agalactiae, M. mycoides subspecies capri (Mmc), M. capricolum subspecies capricolum (Mcc) and M. Read More

    Primary, congenital neuroaxonal dystrophy with peripheral nerve demyelination in Merino-Border Leicester × Polled Dorset lambs.
    Aust Vet J 2017 Nov 13;95(11):416-420. Epub 2017 Sep 13.
    DEDJTR Victoria, Animal Health and Welfare, Bendigo, Victoria, Australia.
    Case Report: Clinicopathological features of neuroaxonal dystrophy (NAD) in newborn, Merino-Border Leicester × Polled Dorset lambs are described. The affected lambs were unable to walk at birth and microscopic examination of brainstem and spinal cord sections revealed bilaterally symmetrical accumulations of axonal swellings (spheroids), the histological hallmark of primary NAD. The neurological deficit was also exacerbated by myelin loss and secondary axonal degeneration, particularly in the spinal cord and sciatic nerves, but also, to a more limited extent, in brainstem and spinal nerves. Read More

    Assessment of florfenicol as a possible treatment for chlamydiosis in koalas (Phascolarctos cinereus).
    Aust Vet J 2017 Sep;95(9):343-349
    Sydney School of Veterinary Science The University of Sydney, Sydney, New South Wales, Australia.
    Objective: Because of limited availability of chloramphenicol to veterinary suppliers, a preliminary study was performed to predict whether an analogue, florfenicol, is an efficacious treatment for chlamydiosis in koalas.

    Methods: Florfenicol was administered to koalas with naturally occurring chlamydiosis at 20 mg/kg SC (n = 3) and at 5 mg/kg (n = 3) and 10 mg/kg (n = 3) IV. The estimated areas under the plasma concentration versus time curves (AUC) were compared with the minimum inhibitory concentration to inhibit Chlamydia pecorum. Read More

    Overground endoscopy in 311 Thoroughbred racehorses: findings and correlation to resting laryngeal function.
    Aust Vet J 2017 Sep;95(9):338-342
    University of Queensland, UQ Gatton Campus, Gatton, Queensland, Australia.
    Objective: To review a large number of equine overground endoscopy (OGE) examinations to determine the incidence of dynamic upper airway obstructions (DUAO); correlations were explored with laryngeal endoscopy findings at rest and abnormal exercising respiratory noise.

    Methods: Retrospective analysis of horses presenting for OGE because of perceived poor performance and/or history of abnormal exercising respiratory noise between 2010 and 2014. Signalment, history and examination findings during resting laryngeal endoscopy and OGE were reviewed. Read More

    Demographics, farm and reproductive management strategies used in Australian automatic milking systems compared with regionally proximal conventional milking systems.
    Aust Vet J 2017 Sep;95(9):325-332
    Faculty of Veterinary Science, School of Life and Environmental Sciences, The University of Sydney, Camden, NSW, Australia.
    Objective: To determine the management practices utilised in automatic milking systems (AMS) that affect reproductive management and performance and how these compare with the management practices used in regionally proximal conventional milking systems (CMS).

    Methods: This study examined demographic and management data from AMS and CMS dairy farms through a survey, with a specific focus on reproductive management procedures.

    Results: Overall, responses from AMS and CMS dairy farms showed little difference in terms of respondent demographics, farm size, herd structure and most farm management strategies. Read More

    Effect of insemination site and diameter of the pre-ovulatory follicle on the odds of pregnancy in heifers using sexed or non-sexed semen.
    Aust Vet J 2017 Sep;95(9):317-324
    Livestock Veterinary Teaching and Research Unit, Faculty of Veterinary Science, School of Life and Environmental Sciences, The University of Sydney, Camden, New South Wales, Australia.
    Objective: To determine if insemination site or pre-ovulatory follicle diameter at fixed-time artificial insemination (FTAI) affects the odds of pregnancy when heifers are inseminated with sexed semen.

    Methods: The study was conducted in 422 Holstein heifers enrolled into 531 inseminations. Inseminations were randomly allocated to 1 of 16 treatment combinations involving three variables: semen type (sexed vs non-sexed), insemination site (uterine horn vs uterine body) and one of four sires. Read More

    Use of cabergoline for oestrus induction in multiparous anoestrous Beagle bitches.
    Aust Vet J 2017 Sep;95(9):350-352
    Ishiyama Co. Ltd, Mukawa, Hokuto, Yamanashi, Japan.
    Objective: The purpose of this study was to examine the efficacy of daily cabergoline administration on oestrus induction in bitches.

    Methods And Results: Of 20 multiparous Beagle bitches, 15 were not mated with sires in their last oestrus and 5 bitches that had been mated whelped. All bitches were in early or mid-anoestrus and received 5 μg/kg/day cabergoline PO. Read More

    Neuroendodermal cyst in the fourth ventricle of a dog.
    Aust Vet J 2017 Aug;95(8):294-298
    Section of Anatomic Pathology, Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.
    Case Report: We describe the MRI appearance and surgical outcome of a rare neuroendodermal cyst in the fourth ventricle of a German Shorthaired Pointer. The dog presented with uncoordinated gait and occasional falling that increased when she became excited. The MRI appearance is shown and the surgical treatment described. Read More

    Maxillary unicystic ameloblastoma in a 6-week-old filly evaluated with computed tomography.
    Aust Vet J 2017 Aug;95(8):299-303
    School of Veterinary Science, The University of Queensland, Gatton, Queensland 4343, Australia.
    Case Report: A 6-week-old Thoroughbred filly was presented for evaluation of an expansile mass overlying the right nasal passage and causing respiratory stertor. On skull radiographs, there was a loculated, soft tissue-opaque mass identified dorsal to the right upper premolars and effacing the right nasal cavity. Computed tomography (CT) revealed a locally extensive mass with relatively benign characteristics located centrally on the tooth root apices of the deciduous second premolar (506). Read More

    Chemical stability of morphine and methadone, and of methadone in combination with acepromazine, medetomidine or xylazine, during prolonged storage in syringes.
    Aust Vet J 2017 Aug;95(8):289-293
    Translational Research and Animal Clinical Trials (TRACTs) Group, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Princes Highway, Werribee 3030, Victoria, Australia.
    Objective: To assess the chemical and physical stability of morphine and methadone stored in syringes for 12 months and of methadone when mixed with acepromazine, medetomidine or xylazine.

    Methods: A high-performance liquid chromatography (HPLC) technique was developed and validated for the analysis of morphine and methadone. Morphine and methadone were dispensed into syringes and stored at 25°C/60% relative humidity (RH) and 40°C/75% RH. Read More

    Effects of GnRH, a progesterone-releasing device, and energy balance on an oestrus synchronisation program in anoestrous dairy cows.
    Aust Vet J 2017 Aug;95(8):281-288
    Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand.
    Objective: The aim of this research was to study the roles of the day 0 energy balance and gonadotrophin-releasing hormone (GnRH) and progesterone levels on dominant follicle (DF) and corpus luteum (CL) development during the first 7 days of a gonadotrophin-prostaglandin-gonadotrophin (GPG) + progesterone (P4) program in anoestrous dairy cows.

    Methods: Cows (n = 81) were allocated to one of the three treatments: (1) GPG + P4 (days 0 and 9, 100 µg GnRH; day 0-7, intravaginal P4 device; day 7, 500 µg PGF); (2) GPG (as for treatment 1 but excluding the P4 device) and (3) prostaglandin + GnRH + P4 (as for treatment 1, but excluding day 0 GnRH). DF and CL size, plasma concentrations of insulin, insulin-like growth factor-I (IGF-I) and non-esterified fatty acid (NEFA) were measured on days 0 and 7. Read More

    Prophylactic and therapeutic efficacy of Australian-registered insecticide formulations against Old World screwworm (Chrysomya bezziana) infestation.
    Aust Vet J 2017 Aug;95(8):265-272
    Queensland Alliance for Agriculture and Food Innovation, University of Queensland, St Lucia, Queensland 4072, Australia.
    Objective: To determine the prophylactic and therapeutic efficacy of Australian-registered insecticide formulations against Old World screwworm (OWS) myiases for potential use in screwworm containment and eradication programs.

    Methods: The longevity of protection provided by six insecticidal formulations (subcutaneous ivermectin, doramectin and abamectin, a topically applied aqueous formulation of spinosad, ivermectin controlled-release capsule and a dicyclanil spray-on formulation) was tested using implants of 1st-instar OWS larvae on Javanese thin-tail sheep. Therapeutic efficacy of four formulations (topical ivermectin, chlorfenvinphos/cypermethrin mixture, aerosol spinosad formulation and a formulation containing propetamphos and eucalyptus oil) was tested against 2- and 4-day-old OWS strikes. Read More

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