Abstract: The present invention relates to an improved method for treatment of feed water for swine to reduce odor and water pollution arising from lagoon slurry while at the same time improving live performance and carcass data. The inventive method comprises the steps of a) producing a gaseous mixture supply of ozone and oxygen gas from ambient air; b) effecting directing contact between said gaseous mixture derived from step (a) with a supply of water by means of a venturi injector device to produce a solution of said gaseous mixture and said supply of water; c) continuing said contact between said gaseous mixture and said water supply until the content of ozone in said water supply is within a range of from about 0.5 parts per million to about 10 parts per million, and the content of oxygen is about 80-97% saturation; and d) providing the resultant water supply from step (c) for use as feed water to swine.