This is an old link, from an old blog post, but I believe I missed it the first time around:
A typical cow in the European Union receives a government subsidy of $2.20 a day. The cow earns more than 1.2 billion of the world’s poorest people.
That is from Mark Perry, citing an Australian minister, via Garett Jones on Twitter. Despite being in the midst of an unprecedented economic crisis, I don’t think these subsidies have changed much in the interim.
Addendum: It may be up to $2.60 a day.