U.S. farm kids lavish shampoos and drugs on their prize cattle

By Lisa Baertlein and P.J. Huffstutter

DALLAS, Nov 4 (Reuters) - For more than a century, ranchers and their kids have paraded cattle around the dusty show ring at the State Fair of Texas in Dallas, in a rite of passage that is part farm economics, part rural theater.

Today, with U.S. auction prices for champion cattle topping $300,000 a head and hefty scholarship checks for winners at stake, the competitive pressures are intense. It's no wonder animals with names like Beast or Chappie get the farm version of luxury spa pampering - shelter from summer heat, baths with pricey shampoos and careful coiffing with electric razors.

Many also get muscle-building livestock drugs added into animal feed. While performance-boosting drugs are banned today in most human sports competitions, Zilmax and other drugs of a type called beta-agonists are federally approved and generally allowed on the livestock-show circuit.

For many contestants the secret weapon of choice is Zilmax, a controversial feed additive sold by Merck & Co. Zilmax-based feeds can give show kids an edge in the headline competition for market-ready steers and heifers, say show sponsors and competitors. They add thicker meat where judges like it most, between the 12th and 13th ribs, where rib-eye steaks come from.

Merck temporarily suspended Zilmax sales in the United States and Canada in August, soon after the largest U.S. meat processor, Tyson Foods Inc, stopped accepting Zilmax-fed cattle for slaughter over animal welfare concerns. After Merck last week said it was preparing to return Zilmax to the market, food giant Cargill Inc declared it would bar Zilmax-fed animals from its supply chain until it was "100 percent confident" those issues are resolved.

But in cattle shows at state and county fairs across the farm belt, Zilmax remains popular. Despite the halt in sales of Merck's zilpaterol - Zilmax is the trade name - existing stockpiles of Zilmax-based show feeds circulated at fairs this fall. So, too, did products made with Optaflexx, a rival drug by Eli Lilly & Co.'s Elanco Animal Health group that is based on ractopamine, also a beta-agonist.

Ractopamine has not been tied to the animal welfare issues seen in cattle this year.

"If it's legal, you use all of your options," said Justana Tate, 17, a Texas state fair competitor, her championship belt buckle gleaming as she stroked her snorting steer to calm him.

Tate is a Zilmax fan. "I think it's a fabulous product," she said.

For drug giant Merck, the show-feed market is a tiny slice of Zilmax's U.S. sales, roughly $160 million last year. The U.S. Food and Drug Administration considers Zilmax safe for animals and humans, though regulators say it requires labels warning people not to inhale the drug or handle it without gloves.