June milk production jumped 5.4% in the top 23 dairy states, according to USDA. The agency also revised May milk production up 0.2%, now saying May’s output was up 4.6%. For the first half of 2005, total U.S. production jumped 2.6% over last year.

In June California jumped 154 million lbs.; Wisconsin was up 96 million lbs. California and Wisconsin were the biggest gainers in total output in June (combined, they contribute 34% of the nation’s milk). California is milking 33,000 more cows than it did a year ago. Wisconsin’s cow numbers are off 6,000 head, but it saw output per cow jump 85 lbs.