A grazing clock for measurement of time spent grazing by cattle 1

Abstract To date, time spent grazing has been measured most successfully using an electronic grazing clock. Difficulties experienced with this clock however, were that temperature and stage in the life of the batteries affected the readings. Further, periods of grazing shorter than the units of time registered by the clock could not be recorded. This paper describes the construction, operation and testing of a grazing clock designed to overcome these problems.