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Manna Pro Crushed Oyster Shell Calcium Supplement For Laying Chickens - Poultry Treat - 5 lbs.

4.7 4.7 out of 5 stars 14,346 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Bird Food by Manna Pro
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-15% $9.77
One-Time Price: $11.49

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5 Pound (Pack of 1)
Oyster Shell
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Purchase options and add-ons

Brand Manna Pro
Flavor Egg
Item Form Pellet
Item Weight 5 Pounds
Target Species Birds, Chicken, Ducks

About this item

  • FOR LAYING POULTRY: Our crushed oyster shells are crafted to provide essential calcium for all laying poultry including chickens, ducks, and quails; from backyard flock to commercial farms, our product is the perfect addition to your chicken feed
  • OYSTER SHELL & CORAL CALCIUM: Our chicken oyster shells are made from a blend of crushed oyster shells and coral calcium, ensuring that your poultry receive a high-quality source of chicken calcium that is easily digestible
  • STRONGER EGGSHELLS: Our crushed oyster shells are an excellent source of calcium for chickens, providing the necessary nutrients for proper eggshell formation, resulting in high-quality eggs and a healthier flock overall
  • HEAT TREATED FOR PURITY:Our oyster shells for chickens are heat treated to ensure maximum purity and cleanliness; our crushed oyster shells for chickens are free from harmful contaminants, bacteria and pathogens, making it safe for your poultry to consume
  • MADE IN USA: Our chicken food is proudly made in the USA, using only the finest ingredients; by choosing our crushed oyster shells for chickens, you're ensuring your birds receive a high-quality, domestically made product that you can trust

Customer ratings by feature

Value for money
4.2 4.2
Sturdiness
4.2 4.2
Flavor
4.0 4.0
Scent
3.7 3.7
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Frequently bought together

Manna Pro Crushed Oyster Shell Calcium Supplement For Laying Chickens - Poultry Treat - 5 lbs.
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From the brand

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Product information

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Manna Pro Crushed Oyster Shell Calcium Supplement For Laying Chickens - Poultry Treat - 5 lbs.

Manna Pro Crushed Oyster Shell Calcium Supplement For Laying Chickens - Poultry Treat - 5 lbs.

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 4 x 8.33 x 11.5 inches; 5 Pounds
  • Manufacturer recommended age ‏ : ‎ 1 month and up
  • Item model number ‏ : ‎ 1000210
  • Date First Available ‏ : ‎ January 2, 2007
  • Manufacturer ‏ : ‎ TV Non-Branded Items (Pets)
  • ASIN ‏ : ‎ B000MD59TC
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.7 4.7 out of 5 stars 14,346 ratings

Product guides and documents

Instructions for Use (IFU) (PDF)

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Product Description

Whether you own a backyard flock or raise champion birds, we know how fulfilling it is to check your nesting boxes and find perfect, beautiful eggs. Avoid cracked or broken eggs with Manna Pro® Oyster Shell. Effective and convenient, it helps reduce the number of weak, soft or broken shells by naturally adding calcium to your flock's diet. It's as simple as that! Add Manna Pro Oyster Shell to your mix and enjoy finding gorgeous eggs every time!

Important information

Ingredients

Oyster Shell and Coral Calcium.

Directions

Layers: Feed Manna Pro Oyster Shell to layers free choice in a separate feeder, or add 1 lb. to 20 lbs. of layer feed. Pullets: Feed Manna Pro Oyster Shell to pullets starting at 18 weeks of age and continue feeding through the entire lay period.

Customer reviews

4.7 out of 5 stars
4.7 out of 5
14,346 global ratings

Customers say

Customers like the shipping and value of the animal nutritional supplement. They say it's a good buy for the money and works great for giving chickens extra calcium. They appreciate the shell thickness. However, some customers have reported issues with the size of the pieces. Opinions are mixed on quality.

AI-generated from the text of customer reviews

203 customers mention180 positive23 negative

Customers like the value of the product. They say it's a good quality supplement and a great value for the money.

"This is a good buy for the money, arrived in one day and the girls love it!!" Read more

"...for the foreseeable future and grabbed this in "bulk" while the price was affordable...." Read more

"I shopped around, and this is a pretty good price for the size of the bag. Chickens seem to like it...." Read more

"Great value. Highly recommend." Read more

61 customers mention61 positive0 negative

Customers are satisfied with the shells. They mention that the product is reliable and helps to strengthen the egg shells, making them nice and hard. Some customers also say that the supplement provides the calcium needed and that it lasts a long time.

"...No more issues so far and their egg shells are nice and strong. They’re happy and so am I. Would definitely recommend!" Read more

"My chicks love it. This has definitely helped harden there eggs." Read more

"...We also believe that it keeps the shells nice and hard...." Read more

"...It should strengthen the egg shells and this is the reason for purchasing it." Read more

57 customers mention41 positive16 negative

Customers like the shell thickness of the product. For example, they say it helps produce good eggshells, and the chickens love it. Some mention that the shells are very thick and the product is a good grit to use in general.

"Our hens egg shells are always hard since we started using these oyster shells...." Read more

"I like the quality of the product. It helps produce good eggshells." Read more

"I bought this cause our hens just started laying.the shells were thin.so I gave it them just once.some had calcium deposits on the shells.their eggs..." Read more

"...They seem to like it and their shells are nice and hard." Read more

55 customers mention52 positive3 negative

Customers like the calcium content of the food. They say it works great for giving their chickens extra calcium, and is an essential supplement for laying hens. They also say it's a good source of protein, and a great food source that keeps chickens healthy.

"Great way to help chickens, and egg strength" Read more

"The girls like it and it makes a big difference with the eggs" Read more

"...I must say the flock are very well fed and free ranging, and as they continue to lay well, it could be they do not need the supplement." Read more

"My chickens love them. Help with egg strength and digestion." Read more

24 customers mention20 positive4 negative

Customers like the shipping of the animal nutritional supplement. They mention that it's fast, well packaged, and secure.

"As advertised, fast shipping, great quality" Read more

"Fast shipping" Read more

"Good value via Amazon, much lower price than anywhere else, fast delivery." Read more

"ARRIVED VERY FAST , GREAT PRICE AND my chickens love it. VERY HAPPY WITH PURCHASE" Read more

96 customers mention41 positive55 negative

Customers have mixed opinions about the quality of the animal nutritional supplement. Some say it's great and works, while others say it didn't work for their laying hens. Some customers also mention that the bag came ripped open, the shells are weak, and the eggs are thin and brittle.

"I received my bag today. Upon opening the package the actual bag was ripped on the top part...." Read more

"...Hard, round pieces and the chickens seem to like them enough although I couldn't see a noticeable difference in their eggs or how many they were..." Read more

"...how I try to "disguise" the product with their regular food they will not eat it...." Read more

"...Our chickens egg shells are actually really thick and never had issues. Good value if you get to use them all...." Read more

100 customers mention27 positive73 negative

Customers find the pieces of the food too big for their birds to eat. They also say the pellets are larger than they need. Some customers also mention that the granules are too big.

"...I even had a double yolk egg!How ever, the size is a little bit bigger, there are about 40% of it will not be eaten. That's a waste." Read more

"...It is way too big for birds to just eat unless they peck at it and it breaks down." Read more

"Great size for poultry but not song birds" Read more

"...But these are more like white grit. But kinda large. Not sure if they are really eating it." Read more

Very Happy with it
5 Stars
Very Happy with it
I have a bunch of chickens, but 3 of them started loosing their feathers and looking sickly. One of my dear friends suggested I grab oyster shells and give it to them as treats. I tried that and none of them seemed to want to it it. I then decided to mix it in with their food and now they gobble it down. One of the three already looks back to normal and the other two have fresh feathers growing all over, so it is starting to work. Love it and it is not expensive at all either. Highly recommend.
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Top reviews from the United States

Cheryl L. Bougthter
5.0 out of 5 stars Chickens Love
Reviewed in the United States on April 30, 2024
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
This is a good buy for the money, arrived in one day and the girls love it!!
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LH
5.0 out of 5 stars Great for my girls
Reviewed in the United States on March 20, 2024
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
After one of my hens became egg bound due to calcium deficiency, I learned that I needed to supplement calcium in addition to their feed. Manna Pro crushed oyster shell has worked well for my girls. Has small pebbles, easy for them to eat unlike a different brand I tried. No more issues so far and their egg shells are nice and strong. They’re happy and so am I. Would definitely recommend!
2 people found this helpful
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Amazon Customer
5.0 out of 5 stars Great product for the quantity/price
Reviewed in the United States on March 29, 2024
Size: 5 Pound (Pack of 6)Style: Oyster ShellVerified Purchase
When I purchased this item, it basically made it a "buy 5 get1 free" kinda sale. I'll need lots of this product for the foreseeable future and grabbed this in "bulk" while the price was affordable. Like EVERYTHING I expect this to become more expensive by the next time I'll need more. At which point I'll probably support local "brick&morter" shops.
One person found this helpful
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Avid readerl
4.0 out of 5 stars Cheapest I could find
Reviewed in the United States on May 1, 2024
Size: 5 Pound (Pack of 6)Style: Oyster ShellVerified Purchase
Unless you can find 50lb good price
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default_character
5.0 out of 5 stars Reasonable Price
Reviewed in the United States on April 7, 2024
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
I shopped around, and this is a pretty good price for the size of the bag. Chickens seem to like it. Although, I also crush up their egg shells, and they seem to like that more.
2 people found this helpful
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William O. Summerour
5.0 out of 5 stars Use sparingly, really helps make egg shells stronger
Reviewed in the United States on April 30, 2024
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
Chickens love this stuff.
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L. A. Lewis
5.0 out of 5 stars Chickens love
Reviewed in the United States on April 22, 2024
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
Great value. Highly recommend.
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Rebecca
5.0 out of 5 stars Love it
Reviewed in the United States on April 18, 2024
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
My chicks love it. This has definitely helped harden there eggs.
One person found this helpful
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Top reviews from other countries

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mayra cabrera
5.0 out of 5 stars Excelente
Reviewed in Mexico on April 21, 2024
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
Excelente
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Amazon Customer
5.0 out of 5 stars Shipping took forever
Reviewed in Canada on June 14, 2021
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
I didn't read the discription properly. I thought they were crushed oyster shells, they are oyster pellets. Which are massive, even for a chicken, they are rock hard. I tried to crush them with my granite pestel and mortar lol they wouldn't crush.
4 people found this helpful
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Alex De Anda
5.0 out of 5 stars Le sirvió a mi gallina
Reviewed in Mexico on November 16, 2023
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
Al principio no lo comía porque le costaba trabajo desbaratarlo, pero lo moli un poco y le gusta mucho. Esta poniendo buenos huevos
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Denise Aiello
5.0 out of 5 stars Chickens love this product
Reviewed in Canada on January 23, 2022
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
Super easy to use and the chickens love it.
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kurtis boutet
5.0 out of 5 stars Small
Reviewed in Canada on January 19, 2022
Size: 5 Pound (Pack of 1)Style: Oyster ShellVerified Purchase
Small
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