The disclosed invention relates to a method and system to transmit data packets through a switched network system that is composed of a plurality of routing entities. The magnetic repulsion between the magnets return the pedal to its original position after having been depressed. Assuming that that range of beam-spread half-angles is between 1 and 2, then the beam current for which 12 is designated as a cutoff beam current. Rows of sprayers project water sprays directed toward the cattle.