Why Fermented Chicken Feed Smell Like Vomit?

Adding more nutrition to your chicken feed can be done with the help of Lacto-fermentation.

It is possible to ferment chicken feed at home, which is one of the best things about it. What are you going to do if your chicken feed smells bad?

For sure, that is not supposed to happen. What affects chicken feed’s smell and how specific ingredients can help will be discussed in this article.

Because of the combination of low temperature fermentation and improper mixing of the ingredients, the mixture ends up with a lot of airborne carbon dioxide, which in turn makes it smell like vomit.

I will discuss the benefits of the chicken feed and what to avoid during the process of fermentation.

What Is The Smell Of Fermented Chicken Feed Smell?

Chemically changing organic substances can be accomplished through the process of Fermentation.

If you ferment your chicken feed, you can create a colony of beneficial organisms for your flock.

There are many benefits to giving your bird feed that is properly fermentable, but only if the feed is properly fermentable.

The smell of your chicken feed is one of the best indicators of its quality. The chicken feed should have a sweet, yogurt-like smell after the process of fermentation is finished.

There could be a slight vinegary smell sometimes. A healthy feed in front of you is a result of all of these things.

Chicken Feed

What Causes Fermented Chicken Feed to Smell Bad?

If the chicken feed is rancid and horrible, you shouldn’t give it to the chickens.

Several reasons could be behind the bad smell of the chicken, and it might be difficult to pin down the exact reason.


Usually, mold is the culprit when the chicken feed has an off-putting smell.

If you have mold in chicken feed, it’s a good idea to ferment it to kill it and make the feed safe again.

It is an entirely different situation if the mold develops during the fermentation process. It happens when the fermentation slows down for one reason or the other.

If the grain or pellets swell over the waterline, there will be mold in the container.

It is unlikely that you will find mold in the water or the soup, but be sure to look for mold when you open the feed container.

If you don’t see a lot of it, skim it off, add some water, and stir. If your chicken feed contains grains that float, make sure to mix them with the rest of the feed.


Rodent Excreta

This may be the reason why your chicken feed smells bad.

Your batches are probably contaminated if your fermentation vessel is not covered correctly or if you are storing it in a room where rodents could get to it.

Even the smallest amount of rat feces could ruin the chicken feed and cause it to smell terrible.

If there is no chance of rodents getting to the feed, you have to throw it away and start over.

Rodent Excreta

Plastic Containers

Pick food-grade quality is the most important guideline when choosing the right container for fermentation. Most of the time, this means glass jars, plastic, and metal.

Problems with fermentation can be caused by even the highest quality plastic. It is easy to scratch and foreign bacteria can ruin your chicken feed.

If there is a terrible smell coming from the chicken feed stored in a plastic container, then perhaps it is time to replace it with glass or a steel container.

Sun Exposure

Chicken feed should never be left in the sunlight when you are making it. The goal is to keep the temperature constant so that it doesn’t impair the fermentation.

It can either slow down or expedite the process and as a result, your feed could sit for too long and develop an unpleasant smell.

Sun Exposure

Other Ingredients

Adding anything to your chicken feed is not necessary when you ferment it. Some poultry farmers have been experimenting with things like apple cider and yeast.

The problem is that these ingredients will encourage the creation of alcohol and gas.

You will still get an unpleasant smell even though you don’t smell vomit specifically from your chicken feed.

If there is a whiff of alcohol in it, then you should not give that feed to your chickens.

The use of blackstrap molasses with chicken feed is a well-known strategy that has many benefits. You don’t add molasses during the fermentor after the ferment is over.

If you don’t change it, you’ll get the gassy and alcohol-like smell in your feed, which will not be good for your chickens.

How Can I Prevent Fermented Chicken Feed From Smelling Bad?

It is certain that if your chicken feed has a rancid smell, you need to throw it away and start over. Make sure to check for mold when you store it in a place where rodents cannot reach it.

If you want to avoid your chicken feed going bad, there are a few other tips you can keep in mind:

  • It’s best to cover the feed with several inches of water.
  • It’s best to stir the feed several times per day.
  • Don’t let the feed sit for more than three days and check for bubbles regularly.
  • It is advisable to drain the feed after it is done and save the water for the next batch.
  • De-chlorinated water is a good use for it. It’s possible to get well-water or store-bought filter water.


It can be easy to make a routine out of the homemade chicken feed. Your chickens will love the fresh eggs, and you will love them for their vitamins and minerals.

The stench can be a result of many reasons, including the fermentation going wrong. You have to get rid of the feed that your chickens cannot eat because it smells like vomit.

It may be mold, foreign bacteria, or any number of other reasons.

It is hoped that you will be able to avoid the disappointment of ruined batches in the future by producing chicken feed with a sweet, sourdough-like scent.

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