---
product_id: 4312710
title: "Manna Pro Crushed Oyster Shell for Chickens – Calcium Supplement for Laying Hens to Support Strong Eggshells – Natural Poultry Mineral Feed for Backyard Chickens – 5 lb Bag"
brand: "manna pro"
price: "140.89 DT"
currency: TND
in_stock: false
url: https://www.desertcart.tn/products/4312710-manna-pro-crushed-oyster-shell-for-chickens-calcium-supplement-laying
store_origin: TN
region: Tunisia
---

# Premium crushed oyster & coral calcium blend Heat-treated for purity & safety Supports stronger, high-quality eggshells Manna Pro Crushed Oyster Shell for Chickens – Calcium Supplement for Laying Hens to Support Strong Eggshells – Natural Poultry Mineral Feed for Backyard Chickens – 5 lb Bag

**Brand:** manna pro
**Price:** 140.89 DT
**Availability:** ❌ Out of Stock

## Summary

> 🥚 Elevate your flock’s eggshell game with nature’s pure calcium boost!

## Quick Answers

- **What is this?** Manna Pro Crushed Oyster Shell for Chickens – Calcium Supplement for Laying Hens to Support Strong Eggshells – Natural Poultry Mineral Feed for Backyard Chickens – 5 lb Bag by manna pro
- **How much does it cost?** 140.89 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/4312710-manna-pro-crushed-oyster-shell-for-chickens-calcium-supplement-laying)

## Best For

- manna pro enthusiasts

## Why This Product

- Trusted manna pro brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Clean & Safe Nutrition:** Heat-treated oyster shells eliminate contaminants for worry-free feeding.
- • **Versatile for All Poultry:** Perfect for chickens, ducks, quails—backyard flocks to commercial farms.
- • **Self-Regulated Feeding Freedom:** Allows hens to control calcium intake, preventing soft shells and promoting health.
- • **Calcium Powerhouse for Peak Layers:** Optimized slow-release calcium boosts eggshell strength and laying performance.
- • **Made in the USA, Trusted Worldwide:** Premium domestic sourcing ensures consistent quality and reliability.

## Overview

Manna Pro Crushed Oyster Shell is a premium, heat-treated calcium supplement made from a blend of crushed oyster shells and coral calcium. Designed specifically for laying poultry, it provides a slow-release, natural calcium source that supports strong eggshell formation, improved egg quality, and overall bird health. Suitable for all poultry types and life stages, this 5 lb bag offers a clean, safe, and domestically made solution trusted by backyard keepers and commercial farms alike.

## Description

Manna Pro Crushed Oyster Shell is a premium calcium supplement formulated specifically for laying hens to support strong, healthy eggshell formation and overall skeletal strength. This natural source of calcium comes from heat-treated oyster shells, which are ground to an optimal size for slow, steady absorption by your poultry. Offering Manna Pro Crushed Oyster Shell self-fed allows hens to self-regulate their calcium intake based on individual needs, reducing the risk of soft or thin-shelled eggs and promoting peak laying performance. This supplement is an essential addition to the diet of backyard chickens, especially those on grain or layer feed, as it provides supplemental calcium not always delivered in standard diets. It also helps maintain strong bones and supports long-term health in laying flocks. With no artificial additives or preservatives, Manna Pro’s Crushed Oyster Shell is safe, effective, and trusted by poultry keepers who prioritize nutrition and egg quality. Choose Manna Pro for all your backyard chicken needs.

## Features

- 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: Made from a premium blend of crushed oyster shells and coral calcium, this supplement provides a high-quality, easily digestible source of calcium to support strong eggshells and overall health in laying poultry of all types.
- STRONGER EGGSHELLS WITH NATURAL CALCIUM: Crushed oyster shells provide a rich, slow-release calcium source for backyard hens, aiding proper eggshell formation, improving egg quality, and supporting overall health and laying performance in laying chickens.
- HEAT TREATED FOR PURITY: Our crushed oyster shells are heat-treated for maximum cleanliness, helping eliminate harmful contaminants, bacteria, and pathogens. This process ensures a clean, safe calcium source you can confidently feed to your poultry.
- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000MD59TC |
| ASIN  | B000MD59TC |
| Additional Features | Heat-treated for purity |
| Age Range Description | All Life Stages |
| Allergen Information | Celery Free |
| Best Sellers Rank | #12,546 in Pet Supplies ( See Top 100 in Pet Supplies ) #189 in Bird Food |
| Brand Name | Manna Pro |
| Breed Recommendation | All Breed Sizes |
| Container Type | Bag |
| Customer Reviews | 4.7 4.7 out of 5 stars (15,879) |
| Date First Available  | January 2, 2007 |
| Flavor | Egg |
| Global Trade Identification Number | 00095668069629 |
| Is Discontinued By Manufacturer  | No |
| Item Form | Pellet |
| Item Type Name | Bird Food |
| Item Weight | 5 Pounds |
| Item model number  | 1000210 |
| Manufacturer | TV Non-Branded Items (Pets) |
| Manufacturer  | TV Non-Branded Items (Pets) |
| Manufacturer Part Number | 1000210 |
| Manufacturer recommended age  | 1 month and up |
| Model Number | 1000210 |
| Number of Items | 1 |
| Occasion | Birthday |
| Package Size Name | 5 lb Bag |
| Pet Type | Bird |
| Product Benefits | Supports strong eggshell formation in laying hens |
| Product Dimensions  | 4 x 8.33 x 11.5 inches; 5 Pounds |
| Recommended Uses For Product | Poultry egg-laying support |
| Special Ingredients | Oyster Shell |
| Specific Uses For Product | Outdoor |
| Target Species | Chicken |
| UPC | 095668069629 |
| Unit Count | 5 Pounds |

## Product Details

- **Age Range (Description):** All Life Stages
- **Brand:** Manna Pro
- **Flavor:** Egg
- **Item Form:** Pellet
- **Specific Uses For Product:** Outdoor

## Images

![Manna Pro Crushed Oyster Shell for Chickens – Calcium Supplement for Laying Hens to Support Strong Eggshells – Natural Poultry Mineral Feed for Backyard Chickens – 5 lb Bag - Image 1](https://m.media-amazon.com/images/I/613RXZ-jRtL.jpg)
![Manna Pro Crushed Oyster Shell for Chickens – Calcium Supplement for Laying Hens to Support Strong Eggshells – Natural Poultry Mineral Feed for Backyard Chickens – 5 lb Bag - Image 2](https://m.media-amazon.com/images/I/613EHHrTYAL.jpg)
![Manna Pro Crushed Oyster Shell for Chickens – Calcium Supplement for Laying Hens to Support Strong Eggshells – Natural Poultry Mineral Feed for Backyard Chickens – 5 lb Bag - Image 3](https://m.media-amazon.com/images/I/61VTLt5L38L.jpg)
![Manna Pro Crushed Oyster Shell for Chickens – Calcium Supplement for Laying Hens to Support Strong Eggshells – Natural Poultry Mineral Feed for Backyard Chickens – 5 lb Bag - Image 4](https://m.media-amazon.com/images/I/61n7o6AfpNL.jpg)
![Manna Pro Crushed Oyster Shell for Chickens – Calcium Supplement for Laying Hens to Support Strong Eggshells – Natural Poultry Mineral Feed for Backyard Chickens – 5 lb Bag - Image 5](https://m.media-amazon.com/images/I/61GnnI1wabL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: I have 2 adult hens, how much should they be given per day or week?**
A: Put a bowl or dish with it out for them. Hens are very in tune with their body and know when they need calcium. Refill as often as needed.

**Q: Is this too large for vermi-composting.  Will worms eat it?**
A: If worms eat oyster shell and calcium they would eat this, it's good quality rock.

**Q: Hi can i feed baby chiks?**
A: You don't want to feed this to baby chicks. Only when they start laying eggs. Only feed medicated chick feed. You can add chick and grit later when there are about 8 weeks old. But do not mix the grit in with their feed. The oyster shell is to help with the calcium needed to create eggs. So do not give that until they are laying.

**Q: Where is this from USA ?**
A: I can’t find anywhere on the package a country of origin. MannaPro is from St. Lewis, but the bag says manufactured for MannaPro.

## Frequently Bought Together

- Manna Pro Crushed Oyster Shell for Chickens – Calcium Supplement for Laying Hens to Support Strong Eggshells – Natural Poultry Mineral Feed for Backyard Chickens – 5 lb Bag
- Manna Pro Chicken Grit with Probiotics – Crushed Granite Grit for Backyard Chickens, Supports Healthy Digestion and Gizzard Function, Ideal for Laying Hens and Small Flocks, 5 lb Bag
- Chicken Oyster Shell Feeder and Grit Feeder Combo

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-19*