Scientists breeding cows that burp less

CANADIAN scientists are breeding a special type of cow designed to burp less, a breakthrough that could reduce a big source of greenhouse gases responsible for global warming.

Cows are responsible for nearly three-quarters of total methane emissions, according to Environment Canada.

Most of the gas comes from bovine burps, which are 20 times more potent than carbon dioxide as a greenhouse gas.
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Although it's for a good cause... I am always a bit sceptical to 'breed' this kind of things... it doesn't sound natural...
Like I heard a few weeks back that highline chooks are breed especially to identify the male and female by color... scary too!

Update: Apparently this was a mistake, as in another aricle they mention that "Canadian researchers develop low-burp cattle feed" which makes more sense!