If farmers feed each of their cows a liter of wine per day, will they experience fewer droughts?

Cows Fed Wine Make Tasty Beef

...last November she began feeding her Angus cows one liter of homemade red wine each day. For a typical cow one liter is about equivalent to one glass for a human.
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One study hypothesizes that the red wine may lessen methane production. A typical cow releases between 26 and 53 gallons of the gas daily. Studies show that agricultural methane gasses are responsible for 14 percent of the greenhouse gasses polluting our atmosphere and resulting in global warming.