An animal feeding apparatus includes a duct through which feed fallsunder gravity. A drive wheel is mounted in the duct and includes a pluralityof paddleblades such that falling feed in the duct acts to drive the blades to rotatethe wheelabout the axis. A syringe is laid in a support channel where a plunger of thesyringeis compressed longitudinally for feeding a liquid to an injection nozzle intothe duct bya screw driven by the wheel. The wheel and the support channel are mounted onacommon housing forming the duct and containing the wheel, to an injectionopeningon the bottom of the housing for addition to the feed passing through the ductportion.
