Medicated animal feed; medicated lick blocks, namely, medicated supplements in the form of lick blocks for reducing methane emissions from ruminants and for modifying the activity of methanogenic bacteria, and antibiotics for animals in the form of medicated lick blocks for reducing and inhibiting the activity of methanogenic bacteria; medicated molasses lick blocks for animals, namely, medicated supplements in the form of lick blocks for reducing methane emissions from ruminants and for modi...