Which disease is linked to rectal stricture in pigs?

Rectal stricture in pigs is primarily associated with certain infectious diseases that lead to gastrointestinal complications. Salmonella typhimurium is notably linked to such conditions, as it can cause severe enteritis that results in inflammation and scarring of the intestinal tissue, including the rectum. This inflammation can lead to strictures, which are narrowing of the rectal passage due to the healing process following the infection.

In contrast, while Escherichia coli infections can also affect the gastrointestinal tract of pigs, they typically lead to diarrhea and dehydration rather than rectal strictures. Porcine reproductive and respiratory syndrome is more associated with reproductive and respiratory issues rather than gastrointestinal ones. Swine dysentery, caused by Brachyspira hyodysenteriae, primarily affects the large intestine and is characterized by watery diarrhea, but is less commonly linked to strictures than Salmonella typhimurium. The key connection to rectal stricture thus emphasizes the role of Salmonella in causing significant inflammation that can lead to such complications.