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55 Victoria Road
Clare SA 5453
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Ph  08 88422822

Consulting Hours:
Monday to Friday


4 Vohr Street
Jamestown SA 5491
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Ph  08 86640923

Consulting Hours
Tuesday and Thursday

  Clare Clinic

Clare Valley Veterinary Services

Clare 8842 2822     Jamestown 8664 0923     Emergency 0408 422 822
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Benefits of Ultrasound Scanning in Mares




With Spring approaching and foals being born, now is the time to consider putting your mare to a stallion.

Horses are seasonal breeders. Increasing day length in early Spring stimulates ovarian activity and  mares generally have regular ovulatory  cycles every 21 days through the spring and summer.

Mares vary in their willingness to demonstrate oestrus behaviour and some only ‘show’ when in the presence of a stallion. Other mares are ‘silent breeders’ and exhibit no or very little behavioural signs of oestrus.

Typical behaviour includes straddling or squatting, raising the tail, frequent urination and everting the clitoris ‘winking’. Unlike cattle, mares rarely mount each other when in oestrus.


Ultrasound examination is an extremely useful tool in managing and manipulating a mares reproductive cycle:


1/ If a mare has an ultrasound examination performed when she is ‘showing’ it can enable us to determine an ideal serving date for going to the stallion or having artificial Insemination. This can aid fertilization rates and also prevent unnecessary traveling to and from the stud for mating.

2/Ultrasound examination can also help to determine the stage of cycle of mares which do not show typical oestrus signs ( silent breeders)

3/The presence of fluid /infection/ovarian abnormalities can be detected by the scanner and treatment initiated.

4/Ultrasound Scanning is used to detect pregnancy from 15-16 days post ovulation. This then allows early intervention if twin embryos are present and if a mare is not pregnant she can be ready to serve at the following ovulation.


Although ultrasound examination is a very useful tool in managing a mares reproductive cycle it does require restraint of the mare usually with a twitch or sedation and a good solid crush. We have a crush at the clinic which can be utilised. If you are considering having your horse mated this season please do not hesitate to give us a call for further information.


Christmas Opening Hours

Clare Clinic:

Closed: Christmas Day, Boxing Day and New Years Day

Open: Wednesday 27th, Thursday 28th, Friday 29th, Saturday Morning 30th December 2017

Clare Clinc Opens full time again on 2nd January 2018

Jamestown Clinic:

Closed: Christmas Day, Boxing Day and through to and including New Years Day

Jamestown Clinic Opens again from 2nd January 2018

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