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Schöner Artikel der LA Times über den Boom der Kakerlakenfarmen in China (Video auf deren Seite nicht verpassen):
The favored breed for this purpose is the Periplaneta americana, or American cockroach, a reddish-brown insect that grows to about 1.6 inches long and, when mature, can fly, as opposed to the smaller, darker, wingless German cockroach.
Since Wang got into the business in 2010, the price of dried cockroaches has increased tenfold, from about $2 a pound to as much as $20, as manufacturers of traditional medicine stockpile pulverized cockroach powder.
"I thought about raising pigs, but with traditional farming, the profit margins are very low," Wang said. "With cockroaches, you can invest 20 yuan and get back 150 yuan," or $3.25 for a return of $11.