Manna Pro Oyster Shell, 50 lb. at Tractor Supply Co.
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Manna Pro Oyster Shell, 50 lb.

SKU # 252503099
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Product Rating is 3.9

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Manna Pro Oyster Shell helps builds strong eggshells for your birds.

  • Good source of calcium
  • Builds strong eggshells
  • Heat-treated for purity
  • Also great for cleaning corn burning stoves
Oyster Shell

Guaranteed Analysis:
Calcium (min.) 33.0%/Calcium (max.) 38.0%,

Feeding Directions:
Layers - Feed Manna Pro Oyster Shell to layers free choice in a separate feeder, or add 1 pound to 20 pounds of layer feed.

Pullets - Provide Manna Pro Oyster Shell to pullets starting at 18 weeks of age and continue feeding through the entire lay period.

Oyster shell usage for corn burning stoves:
Oyster Shell is recommended by some corn-burning stove manufacturers as an additive to promote clean burning, especially when the corn fuel is high in starch. Please consult your stove's manual to see if Oyster Shell is recommended for your stove and follow the manufacturer's directions for use precisely.

Burning Oyster Shell is NOT a substitute for daily cleaning of your corn-burning stove. Regular chimney inspections are always recommended. Oyster Shell does not take the place of inspection and professional cleaning of your chimney. For improved safety and home heating efficiency, it is recommended that all chimneys and vented appliances be inspected every year by a certified chimney sweep.

Specification Description
Deer: No
Horse: No
Brand: Manna Pro
Goat: No
Poultry: Yes
Rabbit: No
Sheep: No
Type: Grain
Cattle: No
Pig: No
Life Stage: Adult
Animal Type: Poultry
Product Type: Chicken Feed
Manufacturer Part Number 08-0696-0150
Manna Pro Oyster Shell, 50 lb. is rated 3.9 out of 5 by 14.
Rated 2 out of 5 by from My hens prefer actual oyster shell I was constantly refilling my hens' oyster shell until I started using this. Now they hardly touch it and their eggshells are getting thin. I would prefer regular crushed oyster shell and so would they.
Date published: 2018-05-06
Rated 3 out of 5 by from I have stupid chickens My chickens will not eat this. I have used different brands of oyster shell and they eat that. I think they like the thin flakes of shell and this is more pebble like. I gave it 3 stars for the price. I can't leave a lower rating because maybe my chickens are just defective and stupid...that is not the fault of the product. Manna Pro is a great company.
Date published: 2018-02-28
Rated 2 out of 5 by from Too Coarse / Large Of A Grind I read one of the other reviewers state the same thing, but based on the other reviews and the great price I gave it a try. This stuff is on the large size. The birds can eat it, but it is much harder for them, and it appears they don't like it as much. The other kind available at other ranch supply stores is flaked, and the birds go through it much quicker. Can they eat this coarse grind- sure. Do I think it is the best choice- nope. I won't be buying this again.
Date published: 2017-12-26
Rated 1 out of 5 by from Waste of money, not one chicken used it. The product is much too large and not one out of hundreds of chickens ate any of it. A complete waste of money.
Date published: 2017-10-11
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Can I blend this in a whole layer ration and if so what % of ration would you recommend? 100# per ton?

Asked by: Dan8440
When added to a complete layer feed, a common level of inclusion for oyster shell is 5%. So, you would add 50 lbs of oyster shell into 950 lbs of layer feed.
Answered by: Manna Pro Nutrition
Date published: 2018-04-03

Are your oyster shells crushed?

Asked by: marrion
Yes, the Oyster Shells are crushed.
Answered by: Manna Pro Nutrition
Date published: 2017-01-19

Can you use this as a soil amendment for your garden?

Asked by: Backyard farmer
Unfortunately we have never used this product in the way you are inquiring, so we do not have any data on the outcome.
Answered by: Manna Pro Nutrition
Date published: 2018-04-13

I am planning covering an area 2" deep, 480 square feet. How many cubic feet are in a 50 # bag?

Asked by: Stubul
We have never measured the cubic feet per bag. Unfortunately we do not have an answer to give you.
Answered by: Manna Pro Nutrition
Date published: 2018-04-27

Can this product be used when planting lily & dahlia bulbs to prevent rodents from damaging them?

Asked by: Wollybear
Unfortunately, Manna Pro does not know if this will keep away rodents if you use it when planting bulbs.
Answered by: TSCJenny
Date published: 2017-04-10

i need crushed oyster shell for bocce court. Will this product work?

Asked by: puddy
We do not know if this product will work or not for purposes as you are describing. We only have information regarding its use in poultry.
Answered by: Manna Pro Nutrition
Date published: 2018-05-24

My neighbor says Oyster Shells are also used in place of grit. Just wondering if this is fact or fiction.

Asked by: rr777
This is fiction. These products serve two totally different purposes. Oyster Shells are meant for laying birds, because it has a high source of calcium. Oyster Shells are soluble and will break down once consumed. Grit will not break down, as it is composed of pieces of stone. Grit helps with breaking down other items in the chickens gizzard that have been consumed.
Answered by: Manna Pro Nutrition
Date published: 2018-02-14

How finely crushed is your oyster shells. I am looking for powdered shells.

Asked by: Wilcox
Our Oyster Shells are crushed into small pieces, but they are not in a powder form.
Answered by: Manna Pro Nutrition
Date published: 2017-09-18
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