Marine Shell Grit for Chickens 20 kg | 3–5 mm Calcium Grit for Strong Eggshells

Crushed Marine Shell Grit is one of the most effective natural calcium supplements for improving eggshell strength and quality in laying hens and other poultry. Rich in essential minerals including calcium, phosphorus and sodium, it provides the nutrients required for proper eggshell formation. The 3–5 mm particle size ensures the shells dissolve gradually in the digestive system, allowing calcium to be released slowly and absorbed more efficiently. This premium marine shell grit is recommended for adult poultry, including laying hens, broilers, ducks, geese, turkeys and pheasants.

What Are the Signs of Calcium Deficiency in Chickens?

• Thin or soft eggshells (shell-less or membrane eggs).
• Reduced egg production or a complete stop in laying.
• Misshapen eggs with rough, wrinkled or uneven shells.
• Weak bones, lethargy and an increased risk of fractures.

Any of these symptoms may indicate a deficiency of calcium, vitamins or essential minerals. Regular supplementation is especially important during periods of intensive egg production. Drobshell Grit Marine Shells contain as much as 43% calcium, helping to effectively replenish calcium reserves and support strong, healthy eggshells.

Crushed Marine Shell Grit – Key Benefits

• Supports strong eggshells and healthy bones.
• 100% natural source of calcium and essential minerals – specially processed marine shells provide highly available calcium for optimal absorption.
• 3–5 mm particle size – acts as a natural grit that also supports digestion by helping grind feed in the gizzard.
• Suitable for a wide range of poultry species – ideal for laying hens, ducks, geese, turkeys, broilers and pheasants.
• Simple natural composition – free from artificial colours and unnecessary fillers.
• Economical to use – birds naturally consume the amount of calcium they require.
• Can be fed separately or mixed with poultry feed.

How to Feed Marine Shell Grit to Poultry

The amount of marine shell grit required depends on the birds' calcium needs. The best practice is to provide it free choice, allowing poultry to regulate their own intake. Calcium consumption should be monitored, particularly during peak laying periods when demand is highest.

• Feeding frequency: Marine shell grit can be offered daily.
• Mixed with feed: Add 50 g of shell grit per 1 kg of feed. One 20 kg pack is sufficient for up to 400 kg of poultry feed.
• Free-choice feeding: Place the shell grit in a separate feeder or tray, allowing birds to consume the required amount naturally.

Tip: For maximum eggshell calcification, offer marine shell grit during the afternoon or evening when calcium demand for shell formation is highest.

Drobshell Grit Marine Shells – Composition