• Publications
  • Influence
A review of drugs and techniques used for sedation and anaesthesia in captive rhinoceros species.
  • T. Portas
  • Medicine
  • Australian veterinary journal
  • 1 September 2004
Captive rhinoceros species are most frequently sedated and/or anaesthetised with the potent opioid, etorphine hydrochloride in combination with an alpha-2 adrenoreceptor agonist or the butyrophenone,Expand
Split-sample comparison of directional and liquid nitrogen vapour freezing method on post-thaw semen quality in white rhinoceroses (Ceratotherium simum simum and Ceratotherium simum cottoni).
TLDR
Directional freezing proved to facilitate higher gamete survival compared to LN vapour freezing and is especially effective in ejaculates of low sperm quality and is important in endangered species where high quality semen donors are often not accessible. Expand
Toxoplasmosis in Macropodids: A Review
  • T. Portas
  • Biology, Medicine
  • Journal of zoo and wildlife medicine : official…
  • 30 March 2010
TLDR
Treatment of toxoplasmosis in macropodids is frequently unrewarding, although recent evidence suggests that the anti-protozoal drug atovaquone may be effective in treating acute cases and eliminating infection. Expand
Prevalence and Clinical Significance of Herpesvirus Infection in Populations of Australian Marsupials
TLDR
A number of epidemiological variables were identified as positive predictors for the presence of herpesvirus DNA in the marsupial samples evaluated and provide directions for future research. Expand
HEALTH EVALUATION OF FREE-RANGING EASTERN BETTONGS (BETTONGIA GAIMARDI) DURING TRANSLOCATION FOR REINTRODUCTION IN AUSTRALIA
Abstract Sixty (19 male, 41 female) free-ranging adult eastern bettongs (Bettongia gaimardi) were captured in Tasmania and translocated to the Australian Capital Territory between July 2011 andExpand
Frozen-thawed rhinoceros sperm exhibit DNA damage shortly after thawing when assessed by the sperm chromatin dispersion assay.
TLDR
The successful validation (via in situ nick translation and neutral comet assay) of the equine Sperm-Halomax kit as an appropriate methodology for the assessment of sperm DNA fragmentation in three species of rhinoceros indicates that the cryopreservation of rhino sperm in liquid nitrogen vapor appeared to result in freeze-thaw DNA damage. Expand
Ovarian superstimulation, transrectal ultrasound-guided oocyte recovery, and IVF in rhinoceros.
TLDR
The production of a 4-cell embryo demonstrated the potential of transrectal ultrasound-guided oocyte recovery as a valuable tool for in vitro production of rhinoceros embryos from otherwise infertile females. Expand
COMPARISON OF ETORPHINE–DETOMIDINE AND MEDETOMIDINE–KETAMINE ANESTHESIA IN CAPTIVE ADDAX (ADDAX NASOMACULATUS)
TLDR
Both drug combinations were suitable for use as primary immobilizing agents producing short-duration restraint and analgesia and further investigation of the cardiopulmonary effects of both combinations is warranted. Expand
Current Therapy in Medicine of Australian Mammals
Current Therapy in Medicine of Australian Mammals provides an update on Australian mammal medicine. Although much of the companion volume, Medicine of Australian Mammals , is still relevant andExpand
Semen collection in an Asian elephant (Elephas maximus) under combined physical and chemical restraint.
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