I have 2 adult hens, how much should they be given per day or week?

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.

Is this too large for vermi-composting. Will worms eat it?

If worms eat oyster shell and calcium they would eat this, it's good quality rock.

Hi can i feed baby chiks?

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.

Where is this from USA ?

I can’t find anywhere on the package a country of origin. MannaPro is from St. Lewis, but the bag says manufactured for MannaPro.

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Manna Pro Oyster Shell, 5-Pounds

Product ID: 399994572

Details

Age range (description)
All Life
Brand
Manna Pro
Flavour
Unflavored
Item form
Pellet
Specific uses for product
Outdoor

💪Supports strong eggshell & skeletal health

🥚Optimized pellet size for steady calcium release

🦪Heat-treated oyster shell purity

Description

🥚 Crack the code to stronger eggshells and healthier hens!

PURE CALCIUM POWER - Heat-treated oyster shells ensure maximum purity and safety for your flock.
PRECISION PELLET SIZE - Crushed to an ideal size for slow, steady calcium absorption—no more weak shells.
SELF REGULATED NUTRITION - Allows hens to control their calcium intake naturally, optimizing egg quality.
VERSATILE FOR ALL BREEDS - Perfect for all life stages and breeds, supporting long-term poultry vitality.
ALL NATURAL ADDITIVE FREE - No artificial preservatives—just pure, natural calcium for healthier birds.

Manna Pro Oyster Shell is a premium, heat-treated crushed oyster shell calcium supplement designed for laying hens. Its optimized pellet size promotes slow calcium absorption, supporting strong eggshell formation and skeletal health. Free from additives, it enables hens to self-regulate intake, enhancing egg quality and overall flock vitality.

Specifications

ASIN	B000MD59TC
Additional Features	Heat-treated for purity and calcium supplement for birds
Age Range Description	All Life Stages
Allergen Information	Celery Free
Animal Food Diet Type	Raw
Best Sellers Rank	#32,378 in Pet Supplies ( See Top 100 in Pet Supplies ) #518 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 (15,133)
Flavor	Unflavored
Global Trade Identification Number	00095668069629
Item Form	Pellet
Item Type Name	Bird Food
Item Weight	5 Pounds
Manufacturer	Manna Pro
Manufacturer Part Number	1000210
Model Number	1000210
Number of Items	1
Occasion	Birthday
Product Benefits	Builds strong eggshells in birds
Recommended Uses For Product	Poultry farming, Egg-laying
Special Ingredients	Oyster Shell
Specific Uses For Product	Outdoor
Target Species	Fish
UPC	095668069629
Unit Count	80 Milliliters

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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