Water Belly (Ascites) in Chickens

Ascites, also called Water Belly, is a common problem with fast-growing meat chickens. It can also be seen in older laying hens.  It is not a disease, so it is not contagious to the rest of your flock.  It is a symptom of a deeper problem, and unfortunately, the underlying cause is eventually fatal.

Symptoms

A hen with water belly will usually have the following symptoms:

• swollen & distended abdomen that is soft, squishy, and feels full of liquid
• red skin along their abdomen, likely missing feathers
• waddling when walking
• blue/purple tint to her comb & wattles
• labored breathing
• lethargy & lack of appetite

Causes

A chicken with water belly is usually suffering from heart disease and/or hypertension.  The strain of heart disease causes their liver to stop functioning properly.  When the liver isn’t functioning properly, fluid begins leaking from the liver into the abdominal cavity causing a fluid filled pocket, “water belly”. 

Occasionally in very old (5+ years) chickens, the cause of the liver failure is a tumor in their reproductive system.  In any event, if your chicken has water belly, it is definitely not a good sign. There is likely a serious issue with your chicken’s health.

Risk Factors

Water belly is most often seen in fast growing meat chickens.  Their bodies sometimes grow too fast, putting too much stress on their hearts.  In meat chickens, this can often happen around 4-6 weeks when they go through a growth spurt.

Older laying hens (5 years or older) have a higher risk just because of their advanced age and the natural deterioration of their systems as they age.

Genetics – premature heart failure and developing water belly can both be hereditary.  A chicken with water belly should not be used in breeding programs.

High altitudes – less oxygen in the air can put stress on the chicken’s heart

Extreme temperatures – stress the chicken’s system, especially when they are chicks, make sure they don’t get chilly.  Extended heat waves can also stress their heart.

Diet issues – too much feed can lead to obesity and stress on the heart & liver.  Too much protein & too much sodium can also cause premature heart failure.

Ventilation issues – not enough ventilation in the coop can lead to excessive ammonia fumes which causes issues with several organs

How to help a chicken with water belly

Unfortunately, there is no cure for water belly but you can help relieve her pain.  A similar situation can happen in humans with certain cancers.  In humans, the fluid build up can be very painful as it stretches the skin and pushes against internal organs.  I would assume this condition is also painful for chickens.

You can help relieve the pain by draining the fluid build-up with a syringe.  It is a temporary fix.  It will make your chicken more comfortable in the short term but will not “cure” the problem.  The cavity will fill back up and you will have to keep draining it to relieve the pressure. In early stages it could take months to fill back up, in later stages of heart failure it could fill back up in days.

Use a sterile medium gauge needle with a syringe. 18 or 20 gauge needle with a 30 ml syringe works well. Clean the area before & after draining and wear gloves. The chicken could go into shock if you drain too much fluid too fast. I recommend not draining more than 30 ml in one sitting and going slow.  The fluid drained from the cavity will be yellow in color which confirms it is indeed leaking from the liver. It could be clear or cloudy. 

Sadly, the only other option, if you do not want to drain the cavity, is to cull the bird to end their suffering. Click here to read about assembling a chicken first aid kit

Preventing Water Belly

While many of the risk factors for developing water belly are out of your control, there are a few things you can do to raise healthy hearted hens.  Just like human hearts, chicken hearts respond best to a balanced, nutritious diet, plenty of fresh air & exercise, and a low stress lifestyle.  Regularly cleaning your chicken’s living quarters, giving them quality feed and fresh, clean water will go a long way in raising healthy, long lived hens.