Vet Staff

Dave Hanlon | BVMS(Hons) MACVS PhD DACT Registered Specialist in Equine Reproduction

Dave graduated from Murdoch University in 1992 with a Bachelor of Veterinary Medicine and Surgery. He then completed a 3yr residency and Masters Degree in large animal reproduction at Massey University, New Zealand. In 2001 he became a Diplomate of the American College of Theriogenologists and in 2002 he was invited to lecture in equine reproduction at Cornell University and was the resident veterinarian at Cornell’s Equine Research Park. He has given numerous presentations on equine reproduction throughout the world to both the general public and the veterinary profession. He has lectured veterinary students in the USA, New Zealand and Australia.

Dave is currently a partner at Matamata Veterinary Services where he provides specialised equine reproduction services. He is also an Adjunct Associate Professor in Theriogenology at both North Carolina State University and Louisiana State University and provides tutorials and lectures to senior veterinary students.

Dave recently completed his PhD entitled “Reproductive performance and the transition period of Thoroughbred mares in New Zealand: Evidence and implications for future alternative management strategies.” Dave is currently involved in several research projects investigating endometritis, stallion management and using the mare to develop a model for human infertility.


Dave Keenan | BVSc MANZCVS

Dave was a 1994 graduate from Massey University before spending 2 years in mixed practice in Ashburton.
He came to MVS in 1995 and is currently one of the five practice directors. Dave achieved his membership exams of the Australian College of Veterinary Scientists in Equine Medicine in 2003 and has a specific interest in performance horse work and equine skeletal development.


Andrea Ritmeester | BVSc (Hons) MS DipACVS Registered Specialist in Equine Surgery

Andrea graduated from Massey University in 1991. She took a job in mixed large animal practice with Veterinary Associates Equine and Farm in Takanini for 2 years before moving to USA to complete a 3-year Residency programme in Large Animal Surgery at Purdue University, Indiana, from 1993-1996. She stayed on as Instructor at Purdue University Veterinary School for another year while finishing a Master of Science degree in 1997.

Andrea returned to NZ in 1997 to resume work at Veterinary Associates Equine and Farm as Practice Surgeon. She passed the Boards Examination in Large Animal Surgery for the American College of Veterinary Surgeons in San Diego in 1998 to become the only Boarded Large Animal Surgeon in private practice in NZ at that time, and was granted Specialist status in Equine Surgery by the NZ Veterinary Council in 2000.

Andrea continued to work at Veterinary Associates Equine and Farm in South Auckland until early 2010, when a lifestyle change saw her move to the Waikato with husband Mark and 5-year-old daughter Jessica. She joined the Matamata Veterinary Services Equine team in March 2010 and is currently performing all types of surgery with a special interest in arthroscopy and abdominal surgery.


Leigh De Clifford | BVSc CertAVP PGDipVPS MRCVS

Born and raised in rural Australia on a mix farm, Leigh grew up around racing, rodeo and campdrafting.

Leigh graduated from Massey in 2008 and worked in a large equine hospital in western Victoria before taking up a position as the private veterinarian for Qatar Bloodstock and Qatar Racing, based in Gloucestershire, UK.

Leigh’s interests include sports medicine, lameness and surgery and is keen on advancing the management of the equine athlete to get maximum performance, whether it be polo, dressage, eventing, show jumping or racing. Leigh was also recently asked to join the Australian Equestrian Veterinary Team for WEG in 2014.

When not at work Leigh can be found running around a rugby pitch, at the gym or grooming for his wife at her dressage competitions.


Barbara Hunter | DVM MS MANZCVS DACVS-LA Registered Specialist in Equine Surgery

Barbara finished her DVM at the University of Saskatchewan in 2007. Following an internship in equine referral practice at Mid-Atlantic Equine Medical Center in New Jersey, Barbara spent two years as a general ambulatory equine practitioner in Alberta, Canada. During that time she developed a special interest in equine sports medicine, imaging and surgery.

In 2010 she moved to the USA to complete a one year clinical fellowship in large animal medicine and surgery followed by a three year residency in large animal surgery at Oregon State University. She also completed a Masters in Veterinary Science that focused on bisphosphonate use in horses for treatment of navicular disease and was awarded first place for presentation of that research in the 2014 American College of Veterinary Surgeon’s Residents Forum. She is now one of two American board certified surgeons at Matamata Veterinary Services and has special interests in both race horse and sport horse lameness, minimally invasive surgery, and dental surgery.


Rochelle Kerr | BVSc BAgSci DipAgSci


Roisin McQuillan | MVB BAgrSc

Roisin joined MVS in April 2018 as part of our equine team. Roisin graduated from University College Dublin, Ireland in 2004 and worked in mixed practice in southern Ireland for two years before moving to Australia to pursue an interest in equine reproduction and medicine. The southern hemisphere appealed and so she applied to register in New Zealand, initially working as a locum vet in the North and South Islands before settling in the Waikato to work in equine practice.

Roisin has been employed to work as a member of the equine team to carry out ambulatory work on the stud farms and stables. Her interests include reproduction, performance medicine, internal medicine, dentistry and ophthalmology. She also enjoys racetrack practice.

Outside of work Roisin enjoys outdoor pursuits such as trail running, hiking and walking her dogs. She enjoys attending the races, local dramas and cinema. Roisin is a keen traveler with her most recent adventure hiking in Patagonia!


Therese Ritson | BVSc (dist.)

Therese joined MVS in August 2017 through our equine internship program. Therese graduated with distinction from the University of Liverpool, UK in 2016. Since then she has spent a year in a mixed animal practice in England where she enjoyed the wide variety of work it provided. Therese also undertook a surgical elective at Anglesey Lodge Equine Hospital as a student. Since completing her internship with MVS, Therese has stayed on as a permanent team member and has moved into an ambulatory vet role with the clinic.

Outside of work Therese enjoys riding, running and cycling.


Rebecca Daly | BVSc

Rebecca joined MVS in April 2018 as an Equine Intern. She graduated with honours from the University of Queensland, Australia, in 2017. During her final year, she completed as much placement in equine veterinary practices as she could, including two months working alongside the specialists at UQ Equine Specialist Hospital. Rebecca has an interest in internal medicine and sports medicine.

Outside of work Rebecca is often found with her nose in a book. She also enjoys horse riding.


Megan du Toit | BVSc

Megan joined MVS in August 2018 as an Equine Intern. She graduated with Honours from the University of Queensland in 2017. After working for 7 months in a mixed practice in New South Wales, she joined the MVS team to pursue her goals in equine veterinary medicine. She has particular interests in diagnostic imaging and internal medicine.

Outside of work Megan enjoys spending time with friends and being outdoors – running, horse riding, hiking and playing touch footy.