Chicken Producers Replace Antibiotics With Probiotics, Mozart

In barns filled with classical music and lighting that changes to match the hues outside, rows of chickens are fed a diet rich in probiotics, a regimen designed to remove the need for the drugs and chemicals that have tainted the global food chain.

As food giants face growing pressure to offer healthier produce, Southeast Asian poultry firm Kee Song Group says its use of "good" bacteria in feed and water means it can meet one the industry's biggest challenges: how to mass produce drug and hormone-free poultry at a reasonable price.

A series of scandals in the last few years from melamine-tainted milk powder in China, horse meat supplied as beef in Europe and growth drugs causing lameness in U.S. cattle has triggered a consumer backlash over food standards and safety.

Recently, Tyson Foods Inc pledged to eliminate the use of human antibiotics in chicken by 2017, one of the most aggressive timetables yet by a U.S. poultry firm.

The top American poultry producer, which supplies fast-food chains such as McDonald's Corp , is among a number of groups globally incorporating probiotics into feed.

"Probiotics, either alone or in combination with essential oils and organic acids, are at the forefront of international approaches to replace antibiotics," said Wayne Bryden, Professor of Animal Science at the University of Queensland.

Probiotics populate the gut with healthy bacteria in a bid to curb bad bacteria, while oils and organic acids are also often included in feed to aid digestion.

A team at the Australian university, partly funded by feed maker Ridley AgriProducts, have found in preliminary trials that using a probiotic can double the efficiency of use of protein from feed to boost weigh gain in livestock.

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