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第1段

1 .This is Scientific American 60-Second Science. I'm Amy Kraft. Got a minute?

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2 .Specially trained dogs have long been used to sniff out drugs, dangerous chemicals and explosives.

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3 .But now researchers have discovered a way to enhance a detection dog's schnoz: change its diet.

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4 .For 18 months researchers rotated 17 trained detection dogs through three different diets: high protein, regular adult dog food, and regular adult dog food with corn oil.

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5 .When the dogs feasted on the food with the high fat content, the regular dog food with corn oil,

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6 .they performed better in exercise and detection tests.

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7 .The dogs performed just as well on the high protein diet as on their standard fare,

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8 .apparently a function of the amount of fat in the food rather than anything related to the protein content.

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9 .What's fat's magic?

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10 .The researchers say that dogs fed high fat diets are less fatigued after exercise, which reduces panting and sensitizes sniffing.

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11 .The research was funded by the Department of Justice and presented at the recent Companion Animal Nutrition Summit in Atlanta.

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12 .The findings could change how detection dogs are fed to turn the merely star smellers into super sniffers.

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13 .Thanks for the minute, for Scientific American 60-Second Science. I'm Amy Kraft.

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