Nuclear gauges and method of configuration and methods of calibrations of the nuclear gauges are provided. In particular, non-ionic substituted disulfone compounds PAGS are provided, including disulfone PAGs that contain a diazo, substituted methylene or hydrazine moiety interposed between substituted sulfone groups. In a second preferred embodiment, the method includes the steps of: providing a facility for housing the poultry, providing at least one light-absorbing ventilation fan associated with the facility for ventilating the facility, limiting exposure of an interior of the facility to light to produce a brown-out effect therein for enhancing physical development of the poultry. Water receiver-side retaining portions are on upper portions of the side surfaces, body case-side retaining portions are on opposite sides of the body case, and the water receiver is mounted to the body case by the water receiver-side retaining portions and the body case-side retaining portions. In still another embodiment of the present invention, the chafing barrier further comprises a top surface of absorbent material having a dermatological agent disposed thereon.