Australian rider Shane Rose has withdrawn from the Olympic equestrian competition because his horse, Taurus, was ruled out with a leg injury.

Rose, a silver medalist in three-day eventing at the 2008 Beijing Games, will be replaced by traveling reserve Megan Jones and her horse, Allofasudden. Her inclusion is subject to IOC approval.

Australian equestrian section manager Brett Mace says the injury to Taurus was already known, but the team had hoped the horse would recover in time for the games.

Mace says "while the injury is not serious, there is just not enough time for recovery with just under a week to go."