Seasonal performance of yearling steers and heifers fed in five housing systems

A noise maker has a chamber with a cover that has a projecting striker of resilient material that normally is positioned in the path of the spokes of a bicycle wheel thus making a noise when the spokes contact it. Disconnect mechanism connects with a handle bar, and connecting means operably connects said chamber with said mechanism. Said mechanism has a rotatable sleeve that rotatably extends over the handle bar and rotatably connects with clamping members that are fixed to said handle bar. A hand grip outside of and fixed to said sleeve actuates the latter thus transferring the motion through said connecting means to the chamber and its striker to thereby move the striker into or out of normal position as desired.