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*This is a sporadic condition that is most often seen when the cyclical pig industry is in an economic trough.
*This is a sporadic condition that is most often seen when the cyclical pig industry is in an economic trough.
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*It is associated with, but not caused by, ''Oesophagostomum''.
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*It is associated with, but not caused by, ''[[Oesophagostomum]]''.
*It is primarily a nutritional problem leading to the following sequence of events:
*It is primarily a nutritional problem leading to the following sequence of events:
**if quantity of feed offered is inadequate for batch-fed sows, hungry individuals are more vulnerable to infection and likely to eat bedding (and infective larvae)
**if quantity of feed offered is inadequate for batch-fed sows, hungry individuals are more vulnerable to infection and likely to eat bedding (and infective larvae)