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Technofile : Fat little piggies

点击量:   时间:2018-01-23 05:01:12

Farm animals on antibiotics gain weight faster, mainly because the drugs kill harmful gut bacteria. But they encourage antibiotic-resistant germs. Harmless lactobacillus bacteria also destroy gut pathogens, but their short shelf life has made them hard to use as growth promoters. Now Bio Armor, an animal feed company in Brittany, has packaged the bacteria in spheres half a millimetre in diameter, made of a polymer of sugars and amino acids. The spheres, which keep the bacteria alive until they reach a pig’s gut,