WHAT IS A JIGGER?
* A jigger is also known as a battery, harp or jack.
* Usually a small electrical device used in conjunction with a whip to try to stimulate a horse to run faster.
* Used in trackwork, then on race day, an action is simulated so the animal believes its about to be shocked again.
* May be used in conjunction with a gear change such as blinkers. The blinkers are used in trackwork in unison with a whip and an electrical device, come race time animal believes it will be be shocked again when struck with whip.
* It is against the rules of racing for trainers, jockeys and stable staff to be in possession of such electrical devices.
* Trainer Darren Weir faces three charges of possession of an electronic apparatus capable of affecting the performance of a horse and Jarrod McLean one charge.
* In 2007, Victorian trainer Paul Preusker (four years) and jockey Holly McKechnie (three years) were banned for using an electrical device on a horse during trackwork.
* Track rider Damien Bradbury was disqualified in 2015 for 18 months after pleading guilty to possessing an electrical device at Mornington.
* Kembla Grange trainer Shane Kember banned in March 2014 (15 months) for possession of an unapproved wire whip covered in electrical tape.