In all cases where the child is found to be a delinquent child, a child in need of supervision, a neglected child or an abused child, the parent, guardian, custodian or any other person who, by any act or acts of wilful commission or omission, if found after notice and a hearing by the youth court to be encouraging, causing or contributing to the neglect or delinquency of such child, may be required by the youth court to do or to omit to do any act or acts that the judge may deem reasonable and necessary for the welfare of the child.