Little Farmer Products Oyster Sure Shell is a 5 lb crushed oyster shell calcium supplement for actively laying hens. It supplies a coarse, separate source of calcium that birds can select alongside a balanced complete ration. The guaranteed analysis is 36% minimum to 41% maximum calcium, and the sole listed ingredient is crushed oyster shell.
Offer Oyster Sure Shell free choice in its own clean, dry container. It supports the calcium demands of normal eggshell formation, but it does not replace complete layer feed, fresh water, digestive grit, or professional evaluation of recurring shell or flock-health problems.
What Oyster Shell Does for Laying Hens
Actively laying hens use substantial calcium to form eggshells. A complete layer ration is the nutritional foundation because it supplies balanced protein, energy, vitamins, minerals, and calcium for that life stage. For an age-by-age overview, see our chicken feeding guide. A separate oyster-shell station provides an additional calcium source that an individual laying hen can visit according to her appetite and production needs.
Crushed oyster shell is soluble. As it moves through the digestive system, the shell breaks down and makes calcium available to the bird. Coarser particles may remain available longer than very fine calcium powder, including during periods when the hen is forming an eggshell. This product is supplemental feed material, not a treatment or a guarantee of shell quality.
Which Chickens Should Receive Oyster Shell?
Oyster shell is intended primarily for hens that are actively laying or reaching point of lay. Follow the package label and the feeding program appropriate for your flock. It can be especially useful when a mixed flock eats an appropriate all-flock ration and the laying hens need access to calcium without forcing the same higher-calcium intake on every bird.
Do not routinely offer extra calcium to chicks, immature pullets, roosters, or other non-laying birds merely because they share the coop. Growing birds have different calcium requirements, and excessive calcium can be harmful. If flock ages and production stages are mixed, position the separate container where the intended laying hens can use it and monitor access.
How to Offer Oyster Sure Shell
- Place a small amount in a dedicated, stable feeder or shallow container near the flock’s regular feeding area.
- Keep the oyster shell separate from complete feed, drinking water, and insoluble poultry grit.
- Protect the container from rain, damp litter, droppings, rodents, insects, and other contamination.
- Check it routinely, discard contaminated material, and wash and dry the container before refilling.
- Maintain continuous access to the correct complete ration and fresh, clean water.
Free-choice service lets individual laying hens visit the calcium source separately, but it does not guarantee that every bird will consume an ideal amount. Observe the flock, prevent dominant birds from blocking access, and replenish according to actual use and package directions.
Guaranteed Analysis and Ingredient
- Calcium, minimum: 36%
- Calcium, maximum: 41%
- Ingredient: crushed oyster shell
- Net weight: 5 lb
- Made in the USA
The listed calcium range is the product’s guaranteed analysis. Oyster Sure Shell should be used as a supplemental calcium source for the appropriate life stage, not as a complete ration or a method of correcting an unknown nutritional or medical condition.
Oyster Shell Is Not Chicken Grit
Oyster shell and poultry grit perform different jobs. Oyster shell dissolves and supplies calcium. Insoluble poultry grit is made from hard stone and remains in the gizzard to help grind whole grains, plants, insects, and other coarse foods. One product cannot replace the other. Review our guide to chicken grit versus oyster shell for a detailed comparison.
A laying hen may need access to both products depending on her diet: oyster shell for supplemental calcium and appropriately sized insoluble grit for mechanical grinding. Keep them in separate labeled containers so you can monitor condition and use.
Complete Feed and Persistent Eggshell Problems
Do not use oyster shell to compensate for a ration that is unsuitable for the flock’s age or production stage. Treats, scratch, and table foods can dilute a balanced diet when they displace too much complete feed. Maintain the correct ration, clean water, suitable housing, and routine flock observation.
Thin, soft, misshapen, or repeatedly broken shells can have more than one cause. Nutrition, age, heat stress, illness, feed intake, and reproductive problems may all contribute. If abnormal shells persist, or a hen is weak, straining, not eating, or behaving abnormally, consult a poultry veterinarian or qualified poultry professional rather than continually increasing calcium.
Storage and Product Details
Reseal the package after use and store it in a cool, dry location protected from moisture, pests, chemicals, and contamination. Inspect the contents before serving. Discard material that is wet, moldy, unusually odorous, or contaminated, and do not return material from a dirty feeder to the original bag.
- Product: Oyster Sure Shell
- Brand: Little Farmer Products®
- Type: crushed oyster shell calcium supplement
- Intended use: supplemental calcium for actively laying hens
- Serving method: free choice in a separate clean, dry container
- Package size: 5 lb
- SKU: LFP56
Oyster Shell for Chickens: Frequently Asked Questions
Do laying hens need oyster shell if they eat layer feed?
A complete layer ration is the nutritional foundation. Many keepers also provide oyster shell free choice in a separate container so individual laying hens can select supplemental calcium. Oyster shell complements complete feed; it does not replace it.
How should I offer Oyster Sure Shell?
Place a small amount in a dedicated, stable feeder or shallow container and keep it clean, dry, and separate from complete feed, water, and poultry grit. Check it routinely and discard material contaminated by moisture, litter, droppings, pests, or debris.
Is oyster shell the same as chicken grit?
No. Oyster shell dissolves and supplies calcium for laying hens. Insoluble poultry grit is hard stone retained in the gizzard to help grind whole grains, plants, insects, and other coarse foods. One cannot replace the other.
Can chicks, immature pullets, roosters, or non-laying birds have oyster shell?
Do not routinely provide extra calcium to growing or non-laying birds merely because they share a coop with laying hens. Their calcium requirements differ, and excessive calcium can be harmful. In a mixed flock, keep oyster shell separate for the actively laying hens and seek qualified guidance when access cannot be managed.
Will oyster shell fix thin or soft eggshells?
It supplies supplemental calcium that supports normal eggshell formation, but shell problems can also involve feed intake, ration balance, age, heat stress, illness, or reproductive issues. If abnormal shells persist or a hen appears unwell, consult a poultry veterinarian or qualified poultry professional rather than continually increasing calcium.
