Probiotics and Backyard Chickens: The Only Guide You’ll Ever Need

Updated: 5 March 2021


Are you in and out of the vet and can’t work out why your flock’s health isn’t 100%?


Worry not, my lovelies - if you want the best for your backyard chickens’ health, we’ve got the scoop. 

Here is the only guide you’ll ever need to learn how to keep backyard chickens healthy with probiotics.

Probiotic Vs Prebiotic - What’s the Difference?

There are two terms you need to be familiar with: Probiotics and prebiotics for backyard chickens. They sound similar but are quite different. 


What is a Prebiotic?

what is a prebiotic?


Probiotic bacteria enhance the ability of the gut to break down carbohydrates and release energy into the chicken. There are stacks of "good bacteria" that can create a "good" probiotic culture in a chicken's gut, and one of the common ones is lactobacillus

Why are Probiotics Important to Chicken Health?

Crowd out the Nasty Bacteria

Shift the gut pH to provide the right environment for bacteria to grow in your backyard chickens. Salmonella and E-coli are two nasty bacteria that like to attach to the gut wall and cause serious issues. 

Crowd out that space in the gut with zillions of other friendly bacteria, and you’ll discourage the attachment of these nasty pathogens.

They’ll still be present. But the environment is so pro probiotic that it stops the organisms from being able to take hold and exerting their nasty effects. Toxin secretion, for example, increases gut motility and leads to diarrhoea and other very upset gut symptoms.

You'll also know that the gut population is way off-key and in need of serious help by a terrible change in the smell of your chook's poo.

backyard chickens gut faeces dr richards quote

What about Yoghurt?

Have you ever seen a chicken devour yoghurt?

Although they struggle to process lactose, it's hard to argue it's all bad!

While there's something special about yoghurt, I’ve found something even better when it comes to a probiotic.

The Best Probiotics - What to Buy for Backyard Chickens? 

You can choose between chicken probiotic powder or liquid. I have found the liquid ones have more added benefits, so I go liquid every time!

The Best Probiotic For Chickens

Resistance Assistance

Resistance Assistance is the best probiotics for chickens​ - hands down! I began using this 18 months ago and there's no turning back! Other breeders and I have personally experienced incredible benefits: 

  • Healthier poo
  • Well-formed faeces with no nasty smells

  • A surge in appetite
  • "They eat like elephants" - one of my customers swears Resistance Assistance is the reason his chicks are bigger, stronger and healthier with fewer health issues. Some herbal ingredients act as an appetite stimulant - bonus! 

  • Faster recovery time
  • It could be the probiotic or appetite-stimulating properties, but owners using Resistance Assistance post-antibiotic use notice that chooks bounce back well post vet treatment. 

  • Fewer respiratory symptoms
  • I believe this benefit is because the bird’s guts can better digest food. They are getting more nutrients from their food and building more robust immunity. 

    So its Like Kombucha for Chickens?

    In many probiotic cultures, particularly the liquid ones, the mere fact that they are grown by fermentation means there are many other beneficial organic acids around.

    These acids maintain the environment in favour of probiotic cultures. They also help to inhibit other pathogens associated with disease.

    Talk about a win-win!

    Probiotics are preventative, there to give us long term stability in the gut. The high-quality formulas are beneficial but remember - they will never eliminate disease 100%.

    How Best to Use Probiotics for Chickens 

    flock of chickens foraging in the backyard

    They’re not necessarily something that you want to go along and blitz when you think you’ve got the symptoms.

    The important thing about using probiotics as a preventative with chickens is that you must supply them every day.

    Mix Resistance Assistance evenly into their feed (1ml per 100g of feed or about 1% of their daily feed weight). 

    Work out a time when to feed backyard chickens, give them the same dose every day, and monitor their faeces. If they look good and regular, then you’ve got a happier chook on your hands.

    But just remember - more probiotic is not necessarily better. Stick to the recommended dosage.

    With no withholding period, why not give them a go?


    Shop for your poultry supplies in Australia online. Resistance Assistance is recommended by Australian Avian Veterinarians. 100% Australian, natural and safe for all ages of poultry.

    Take advantage of our Health Bundle of Resistance Assistance and Solaminovit liquid vitamin and amino acid supplement for healthy, strong chicks and pullets.


    Want your chickens to be the healthiest and happiest they can be? I offer backyard chicken workshops, online programs, phone coaching, and in-person support to families, schools, and free-range egg farmers. Visit my online shop for natural, tried-and-tested poultry supplies in Australia.

    Become an expert in Backyard Chickens 101 and check here for the latest tips and trends all about chooks. 

    Check out my Instagram or drop me a line -, comment below or visit my Facebook page

    Elise McNamara, Chicken Consultant & Educator.


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