The second topic in this series is about ear necrosis. Porcine ear necrosis syndrome (PENS) in pigs has been reported as an increasing health problem in many countries with intensive pig farming.PENS exhibits as tissue damage to the tips of ears. Researchers have found it occasionally in pigs at three weeks, but it is most common in pigs 5-16 weeks of age. Sometimes only a few pigs are affected and the lesions are barely noticeable, but there are outbreaks where all the pigs are affected and many with extensive lesions.The disease does not result in mortality, but can make it difficult for a farmer to sell feeder pigs. The cause of this disease is complex and the presumed triggering factors can be divided into infectious and non-infectious agents.
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