A through-substrate via structure includes at least two electrically conductive via segments embedded in a substrate and separated from each other by an electrically conductive barrier layer therebetween. The plurality of containers are for different feeds and a plurality of troughs are provided to which feeds from the containers are selectively transferred by robot arms which are computer-controlled based on the identification by an identification sensor of the animal that will next feed at the trough involved. Upon the setting of the operation mode to be the High FER mode, the one FEC mode is selected, from the one or more FEC modes predetermined for the High FER mode, to control the codec by incorporating of redundancy within a coding of the input audio or as separate redundancy information separate from the coded input audio according to the selected one FEC mode. The drive control and the regenerative control which are performed by the first controller for controlling the synchronous motor and the second controller for controlling the synchronous generator are inextricably linked control. The central opening of the bushing will receive the line.