Associate Professor John House

Associate Professor John House BSc, BVMS (Hons), PhD, Dip ACVIM

Following graduation from Murdoch University in 1986 John worked in mixed practice in Gippsland Victoria prior to moving to the University of California Davis in 1989 where he completed a residency in food animal medicine and surgery and a PhD in the control and prevention of salmonella on large dairies. John’s clinical interests include designing and implementing herd health programs and assisted reproductive technologies. Research interests include infectious disease prevention and management and assisted reproductive technologies. More ..

Dr Francis Sabbe

Dr Francis Sabbe DVM (Hon), MSc
Senior Registrar

Francis Graduated from the University of Ghent in Belgium in 1986. After completing a Master of science degree in Tropical Animal Health and Animal Production at the Tropical Institute of Antwerp, Belgium, he started his professional experience working in Africa. He was manager of a development aid project, involving the running of an Ambulatory Clinical Service, lecturing and research in Parasitology, at the Veterinary Faculty of the University of Zambia. During his veterinary career he has worked with livestock in Europe, Africa, the Middle East and Australia. . Francis has a keen interest in companion animal livestock medicine and surgery.

Dr Alison Gunn

Dr Alison Gunn BVSc, MVS, MANZCVS
Senior Lecturer

Alison graduated from the University of Bristol in 1988 and after starting her career in mixed practice soon developed an interest in cattle. Alison joined the University of Sydney in 2006. Alison is an Australian Milking Machine Trade Association (AMMTA) qualified milking machine tester, currently she heads up mastitis investigations in the Livestock Veterinary Service. More ..

Dr Luke Ingenhoff

Dr Luke Ingenhoff BVSc (Hons), MANZCVS

After graduating from the University of Sydney in 2006, Luke spent 3 years working in cattle practice in the Hunter Valley, where he serviced both dairy and beef clients. In 2010 Luke took the opportunity to travel to the UK where he spent a further 2 years working in dairy practice in the English Lakes District. Luke’s interests include dairy herd fertility, mastitis investigation, lameness and obstetrics. Luke is National Cattle Pregnancy Diagnosis Scheme (NCPD) accredited; an approved veterinarian in the Johnes Disease Market Assurance Program (JDMAP) and is a Countdown Mastitis Advisor.

Dr Virginia (Jennie) Mohler

Dr Virginia (Jennie) Mohler BVSc, Hons, MANZCVS

Jennie is originally from Northern California; her interest in livestock originates from family beef and dairy operations. Prior to embarking on a veterinary career Jennie worked in the Biotechnology Industry as a research associate and manager. Currently, Jennie is undertaking a PhD in Veterinary Immunology evaluating the effectiveness of a new salmonella vaccine. In 2010 Jennie passed her Australian College membership exams in dairy medicine. Jennie also has a keen interest in small ruminants and pigs providing advice to the numerous hobby farmers in the Camden area.

Dr Shahab Ranjbar

Dr Shahab Ranjbar DVM

Since graduating from the Azad University of Karadj, Iran in 2003 Shahab has worked with livestock. He joined the Livestock Veterinary Service in 2009 to pursue his interest in bovine lameness which is the subject of his Masters research. Shahab is currently studying for his membership exams in dairy cattle medicine.

Dr Derek Keeper BVSc (1st class Hon), BSc (Agr. Hons)

Derek originally hails from the west coast of Canada. After an Agriculture degree at the University of Guelph (Ontario), he attended veterinary school at the University of Sydney, graduating in 2007. Derek then spent 4 years in mixed practice in northern NSW, before joining the livestock unit at the beginning of 2012. He is currently pursuing a masters of veterinary clinical studies in reproduction in the emerging automated milking facilities and is studying for membership examinations in ruminant nutrition.


Dr Mark Hazelton BScAgr (Hons 1) BVSc

Mark originally studied a Bachelor in Agricultural Science at the University of Sydney and graduated in 2003. His 3rd year of study was spent on exchange in Canada at the University of Guelph. Following graduation he worked on a beef cattle stud in Alberta, Canada before returning to Australia to work for a livestock feed ingredients supplier in Victoria. In 2007, Mark returned to the University of Sydney to study Veterinary Science. After graduating in 2011, he worked in mixed practice in the New England region of NSW prior to working on research projects investigating mastitis prevention and cattle pain management. Mark began working for the Livestock Unit as a resident in June 2013. His Masters research is focused on Mycoplasma associated disease in Australian dairy herds. Mark has interests in farm management, mastitis, nutrition and reproduction.

Ivana Baran

Ivana Baran
Administrative Support

Ivana joined the Livestock Veterinary Service in 2010. Ivana keeps track of the clinicians organising appointments and farm visits plus takes care of ordering supplies and pharmaceuticals. The general go to person who keeps everything co-ordinated.

Ann-Marie House

Ann-Marie House
Laboratory Manager

Ann-Marie originally trained as a veterinary nurse prior to working in laboratories at the University of California Davis. Ann-Marie manages the milk culture laboratory and provides laboratory support for postgraduate student research projects.