  Britain urged to ape countries such as the US and Saudi Arabia
and build farms housing tens of thousands of cows or pigs Pig
Farm Some of the 1,200 sows and 400 piglets at a farm in
Suffolk. The NFU wants to see farms holding many more animals
than this. Photograph: David Levene for the Guardian        "The
challenge of feeding everybody with the constraints of climate
change and weather shocks is so great we'll need a complete
rethink," said Kendall.  Although livestock farms in the UK have
been consolidating for many years, Post's report, entitled
Livestock Super Farms, found that typically the units held 100
to 150 head of cattle or pigs.  Even the biggest UK farms are
dwarfed by the mega farms of other countries. In the US, farms
with 10,000 pigs are not uncommon and Saudi Arabia has a super
dairy with a herd of 37,000.  In Britain last year, there was a
move to house 8,000 dairy cows at Nocton, Lincolnshire. This
application from Nocton Dairies was withdrawn because of
official concerns about water pol