Yes, if the child is at least 16 years old. However, it is necessary that you personally hand over your child to the guide of the stable tour and also pick him/her up again at the end of the stable tour. Children up to the age of 15 are only allowed to take part in the stable tour if accompanied by an adult. For this, both child and adult need an admission ticket.
By the way: According to the law for the protection of minors, children and young people under the age of 16 may only enter the arena if accompanied by an adult.