Salpingitis is inflammation of the oviduct. Almost all cases are caused by a bacterial infection, usually Escherichia coli
, but sometimes Mycoplasma gallisepticum, Salmonella
spp. and Pasteurella multocida
can affect other organ systems simultaneously. Salpingitis can occur in acute or chronic form. Common causes of salpingitis include other reproductive system conditions such as egg binding, oviduct impaction, and egg-related peritonitis.
The oviduct is one of the main organs within a hen's reproductive system. It is a 25 to 27 inch-long twisted tube through which an ovum (egg) passes from the ovary. The oviduct is equivalent to the fallopian tube in female humans.
Initially the hen may not show any sign of infection, but will begin to lay fewer eggs and in some cases may stop laying eggs altogether. This has an internal impact on the hen, as the partially produced egg material (shell, yolk, membranes, etc.) that would normally develop into an egg will start to accumulate within the oviduct. The oviduct is only so large, and when it can no longer fit anymore egg material it will start to spill out and into the hen's body cavity. Once this occurs, the condition is referred to as egg peritonitis.