| http://www.w3.org/ns/prov#value | - Published in the farming magazine Effektivt Landbrug on 13 April 2012 [1], the farmer Ib Borup Perderson describes how his pigs suffered from symptoms including chronic diarrhoea, birth defects, reproductive problems, reduced appetite, bloating, stomach ulcers, weaker and smaller piglets, and reduced litter sizes.
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