A constant detecting apparatus 15 comprising a detecting unit 26 and a calculating unit 27. A plurality of power-supplying terminals is symmetrically arranged with respect to a vertical line passing through a center of the shaft. The group progressive trigger may be based on a count of local progressive prizes that have been awarded. The retaining portion of the side board is configured for blocking the inwardly bent portion of the side board so that a range of rotation of the rotational base relative to the support member is between a first utmost position and a second utmost position. The fine-adjustment mechanism is mounted to the turntable and includes a fine-adjustment lever pivotally mounted on the turntable. In particular, the present invention relates to an ingestible carrier containing specific amino acids designed to favor the growth of bacteria favorable to individuals health or for reducing the risk of developing deleterious events.