Oyster shell for chickens is crucial! So if you’ve been curious as to whether or not you should be feeding your chickens oyster shells this post will explain all of the benefits!
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For as long as I can remember, I have fed my chickens oyster shells. My grandpa who I consider an expert on raising chickens always emphasized to me how important it was and I have personally seen the benefits.
But if you’re new to raising chickens or maybe even a long-time chicken owner, you may still be wondering why your chickens need oyster shells.
Why Do Chickens Need Oyster Shell?
Adding oyster shells to your hens’ diet is extremely important. There are other things you need to feed your chickens such as layer feed for egg production and fresh herbs for extra health benefits.
But providing oyster shells for your hens to eat will ensure optimal hen health for egg production by providing them with a good supply of calcium.
Below I’ll go over the three most important benefits.
1.) Oyster Shell Produces Strong Eggshells
Nobody wants an egg that breaks in the nesting box or that simply falls apart when you handle it.
So to ensure that your hen is able to lay eggs with strong shells, she needs a diet high in calcium.
Eggshells are about 95% calcium, so it’s no wonder why laying hens need a calcium supplement.
2.) It Helps Hens Stay Strong and Healthy
When laying hens do not receive enough calcium their body begins taking it from their bones. This can then lead to weak and brittle-boned chickens.
3.) Helps With Continued Egg Production
If you’ve noticed that your hens are not laying there are a few reasons why, such as she may be molting, she may be too young still or getting too old, or she needs additional calcium.
Signs of calcium deficiency in hens include:
- Eggs with thin shells.
- Eggs with soft shells.
- Eggs with no shell.
- Slow egg production.
- Broken eggs.
Guide to Feeding Oyster Shell
First off, only laying hens need additional calcium, roosters do not.
In fact, excess calcium can be harmful to chickens that don’t use up the extra calcium to produce eggs.
So let’s start with when to start feeding it.
When to Start Feeding Oyster Shell
When your hens are approaching laying time which is anywhere from 18-22 weeks of age. Or as soon as you notice that they’ve started laying.
How Much Oyster Shell for Chickens
The simple answer to this question is as much as they need.
Layer feed has a good amount of calcium in it and for some chickens that will give them plenty. But for others, they’ll need extra.
So the best thing to do is give them free choice. Put the oyster shell in its own separate dish or feeder and always keep it available. Chickens will never overeat on it, their bodies instinctively know when they need additional calcium and so they’ll only eat it as needed.
You should be able to find ground oyster shells at your local feed store, but if not, they even sell oyster shells on Amazon.
Additional Ways to Provide Calcium
You may have heard about other chicken owners feeding their own eggshells back to their hens. There are both negative and positives about doing so.
One negative belief is that hens will then try to eat their own eggs.
A positive is that you’re being resourceful and still providing a good source of calcium.
For many years eggshells have been fed back to their hens to eat and so I don’t see it as a problem. I believe that practices that have been around a long time tend to be pretty smart.
However, if you decide to feed the eggs shells back to your hens then just make sure that you first wash off the yolk, dry them out, and crush them up.
Don’t just throw an egg on the ground and let them eat it. Once they start to enjoy the taste of the eggs they’ll want to eat their own.
I’ve had quite a few egg-eating hens over the years so trust me on that one…
Here is also a list of some great calcium-rich vegetables that you can feed:
- Brussels Sprouts
- Butternut Squash
- Dandelion Greens
- Green Beans
- Red Clover
Additional Supplements to a Chicken’s Diet
Grit is another important part of a chicken’s diet. And this one is not only for hens but for all backyard chickens.
Grit and oyster shells are two completely separate things and each serves its own purpose.
Oyster shell is specifically for laying hens to provide them with the extra calcium needed.
Poultry grit helps the chicken’s digestive tract by putting their food into a usable form.
Chickens don’t have teeth so the grit is what helps to break down their food. After a chicken eats the grit it settles in its gizzard and stays there to grind food.
So in summary, as long as you’re providing your chickens oyster shell, grit, and a good quality layer feed, you’ll have a healthy flock of chickens and wonderful fresh eggs with strong shells.
Learn more in my YouTube video below!
Want to learn more about the best laying hens? Be sure to head to this post here: The Best Chickens for Eggs
Or even the best chicken breeds for beginners? There are some breeds that I’ll always keep in my flock so be sure to learn about them in this post here: 5 Best Chicken Breeds for Beginners
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