By Heather Schlitz

CHICAGO, May 7 (Reuters) - Chicago Mercantile Exchange cattle futures turned lower on Thursday on technical trading and a weaker cash cattle trade, analysts said.

Chicago Mercantile Exchange June live cattle LCM26 settled 3.425 cents lower at 250.05 cents per pound. August feeders FCQ26 ended 6.875 cents lower at 366.175 cents per pound.

Boxed beef cutout prices turned lower on Thursday afternoon. Choice cuts were priced $2.68 lower at $386.94 per hundredweight, while select cuts fell $5.21 to $384.42 per cwt, according to U.S. Department of Agriculture data.

Cattle prices may have hit a seasonal peak ahead of Mother's Day, when many families grill meat to celebrate.

The upcoming grilling season and warmer weather typically help support cattle futures, as summer usually ushers in stronger demand for red meat.

Beef packer margins continued to be deep in the red as the U.S. cattle herd remains near a 75-year low, with the closure of the U.S.-Mexico border to cattle imports also constricting supply.

Packers were estimated to lose $219.40 per head of cattle slaughtered on Wednesday, compared with $140.10 lost per head the week prior, according to Denver-based livestock marketing advisory service HedgersEdge. Meatpackers have slowed slaughter pace this week in an effort to regain some leverage, traders said.

Benchmark June lean hogs LHM26 ended 0.325 cent lower at 99.375 cents per pound.