Cloacal Prolapse in Chickens: What to Do and How to Prevent It

Cloacal prolapse, often simply called a prolapse, occurs when tissue from inside the cloaca or reproductive tract protrudes through the vent.

It is most commonly associated with egg laying and can quickly become an emergency. Once exposed, the delicate tissue is vulnerable to drying, swelling, trauma and pecking from other birds.

The earlier a prolapse is recognised and protected, the better the chance of successful treatment.

Why Do Chickens Develop a Prolapse?

Prolapse is usually associated with excessive straining or problems surrounding egg laying.

Risk factors can include:

• Obesity
• Beginning lay before the hen is physically mature
• Large or abnormal eggs
• Excessive straining
• Reproductive tract disease
• Persistent laying
• Poor body condition or nutritional imbalance
• Previous prolapse

Young hens that begin laying before reaching adequate physical maturity may be particularly vulnerable.

Why Is a Prolapse an Emergency?

The exposed tissue is normally protected inside the body. Once outside, it can rapidly become swollen and damaged.

The major concerns are:

• Drying of the exposed tissue
• Oedema and increasing swelling
• Trauma and bleeding
• Pecking or cannibalism from flock mates
• Reduced blood supply to the tissue
• Tissue death
• Secondary infection

As the tissue becomes increasingly swollen, returning it to its normal position becomes much more difficult.

What Should You Do First?

Isolate the Hen

Remove the affected bird from the flock immediately.

Other chickens are naturally attracted to red or damaged tissue and can cause devastating injuries through pecking.

Place the hen somewhere quiet, clean and relatively dark.

Keep the Tissue Moist

Do not allow the prolapsed tissue to dry out.

Keeping the tissue clean and moist helps protect it while the bird is being assessed and treated. A suitable water-based lubricant or sterile saline can be useful temporarily.

Avoid harsh antiseptics or products that may damage the delicate mucosal tissue.

Reduce Swelling

Swelling is one of the main reasons a prolapse becomes difficult to replace.

Veterinary treatment may involve appropriate anti-inflammatory medication, pain relief and other measures to reduce oedema and straining.

Should You Push the Prolapse Back In?

Be careful.

A small, fresh prolapse with healthy tissue may sometimes be gently reduced, but repeatedly forcing swollen or damaged tissue back through the vent can cause additional trauma.

It is also important to understand what tissue has actually prolapsed.

The cloaca is the common chamber into which the intestinal, urinary and reproductive tracts empty. What appears to be a simple vent prolapse may involve different structures, and incorrect replacement can create further problems.

If the tissue is badly swollen, bleeding, darkening, damaged or repeatedly prolapses after replacement, veterinary treatment is recommended.

More Severe Prolapses

More significant cases may require:

• Pain relief
• Anti-inflammatory medication
• Fluid and nutritional support
• Treatment of underlying reproductive disease
• Careful reduction of the prolapse
• Temporary sutures to help retain the tissue
• Medical management to suppress further egg production
• Surgical treatment in complicated cases

Simply replacing the tissue without addressing why the hen prolapsed in the first place can result in rapid recurrence.

Preventing Cloacal Prolapse

Monitor Body Condition

Get into the habit of assessing the body condition of your hens, particularly before and during the laying period.

Obesity can increase reproductive problems, while underdeveloped pullets entering lay too early may also be at increased risk.

Body condition should be assessed by feeling the breast musculature and overall fat deposition rather than relying on appearance alone.

Feed an Appropriate Diet

Provide a nutritionally complete diet appropriate for the bird's age and stage of production.

Avoid excessive treats and energy-dense foods that encourage obesity or unbalanced nutrition.

Manage Early Onset of Lay

Light exposure plays an important role in stimulating reproductive activity.

Pullets should ideally reach appropriate physical maturity before being encouraged into lay. Lighting programmes used to manipulate egg production should therefore be managed carefully.

Investigate Recurrent Problems

A hen that repeatedly prolapses may have an underlying reproductive problem.

Persistent laying, abnormal eggs, oviduct disease, inflammation or other reproductive conditions may need to be investigated rather than continually replacing the prolapse.

The Takeaway

A cloacal prolapse can deteriorate quickly, so early intervention matters.

Immediately isolate the hen, protect the exposed tissue from drying and trauma, and minimise further straining. Small, uncomplicated prolapses may respond well when treated early, while swollen, damaged or recurrent prolapses often require veterinary intervention.

Most importantly, don't just focus on putting the tissue back in. Identifying and managing the underlying reason for the prolapse is an important part of preventing it from happening again.

Written by Dr Sam Hurley, BSc, BVSc, MAHM