But most grain and livestock futures rose, helping to push up the Commodity Research Bureau's index 1.45 points, to 233.65.
On other markets, cotton prices rose, energy futures were mostly higher and livestock futures were up.
Slack demand for beef products pushed livestock futures lower.
Crude oil rose, and livestock futures were mixed.
Most livestock futures retreated in light trading.
The rally helped lift livestock futures contracts.
Other meat and livestock futures also declined.
In other commodity markets, livestock futures were mixed and grain futures were mostly lower.
Nearby livestock futures recovered as the Government moved to provide forage to prevent wholesale liquidation of animals.
On other commodity markets, copper fell, livestock futures were mixed and pork bellies declined the daily limit for the third straight day.
