Portas, T.J.

Portas, T.J.; Hildebrandt, T.B.; Bryant, B.R.; Goeritz, F.; Hermes, R. 2010. Seminoma in a southern black rhinoceros (Diceros bicornis minor): diagnosis, surgical management and effect on fertility. Australian Veterinary Journal 88 (1-2): 57-60.

Reid, C.E.; Hermes, R.; Blottner, S.; Goeritz, F.; Wibbelt, G.; Walzer, C.; Bryant, B.R.; Portas, T.J.; Streich, W.J.; Hildebrandt, T.B. 2009. 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). Theriogenology 71 (2): 275-291.

Behr, B.; Rath, D.; Hildebrandt, T.B.; Goeritz, F.; Blottner, S.; Portas, T.J.; Bryant, B.R.; Sieg, B.; Knieriem, A.; Graaf, S.P.de; Maxwell, W.M.C., Hermes, R.; Hermes, R. 2009. Germany/Australia index of sperm sex sortability in elephants and rhinoceros. Reproduction in Domestic Animals 44: 273-277.

Hermes, R.; Goeritz, F.; Portas, T.J.; Bryant, B.R.; Kelly, J.M.; Maclellan, L.J.; Keeley, T.; Schwarzenberger, F.; Walzer, C.; Schnorrenberg, A.; Spindler, R.E., Saragusty, J., Kaandorp, S., Hildebrandt, T.B. 2009. Ovarian superstimulation, transrectal ultrasound-guided oocyte recovery, and IVF in rhinoceros. Theriogenology 72 (7): 958-968.

Portas, T.J. 2007. Sustainable management of southern white rhinoceros in Australasia into the future. ARAZPA Conference Proceedings 2007: 1-7.

Reid, P.C.; Hermes, R.; Hildebrandt, T.B.; Goeritz, F.; Walzer, C.; Portas, T.J.; Blottner, S. 2006. Comparison of conventional equiaxed and directional freezing in rhinoceros (Ceratotherium simum, Diceros bicornis). Proceedings of the American Association of Zoo Veterinarians 2006: 113.

Portas, T.J.; Hermes, R.; Bryant, B.R.; Goeritz, F.; Thorne, A.; Hildebrandt, T.B. 2006. Anesthesia and use of a sling system to faciliate transvaginal laparoscopy in a black rhinoceros (Diceros bicornis minor). Journal of Zoo and Wildlife Medicine 37 (2): 202-205, fig. 1, table 1.

Hermes, R.; Hildebrandt, T.B.; Portas, T.J.; Goeritz, F.; Bryant, B.R.; Kretzschmar, P.; Walzer, C.; Schaffer, N.E.; Ladds, P.; Blottner, S. 2006. Testis and epididymis ultrasonography and fine-needle biopsy in the rhinoceros for tumor and fertility diagnosis. Proceedings of the European Association of Zoo- and Wildlife Veterinarians 2006: 1-2.

Portas, T.J.; Hermes, R.; Bryant, B.R.; Goeritz, F.; Ladds, P.; Hildebrandt, T.B. 2005. Seminoma in a southern white rhinoceros (Ceratotherium simum simum). Veterinary Record 157 (18): 556-558, figs. 1-3, table 1.

Hermes, R.; Bryant, B.R.; Goeritz, F.; Portas, T.J.; Thorne, A.; Hildebrandt, T.B. 2004. Testicular neoplasia in a White rhinoceros (Ceratotherium simum): Fertility and assisted reproductive measures to minimize genetic loss. Proceedings of the AAZV, AAWV, WDA Joint Conference 2004: 383.

Portas, T.J. 2004. A review of drugs and techniques used for sedation and anaesthesia in captive rhinoceros species. Australian Veterinary Journal 82 (9): 542-549, figs. 1-4.