Backyard chicken keepers and farmers alike are looking for natural, high-quality supplements to support their flocks’ health and egg production. As more people move away from synthetic additives, there’s a growing demand for sustainable, bioavailable sources of essential minerals that promote stronger eggshells, healthier bones, and overall vitality. Mussel Shell Grit is emerging as a trusted, all-natural calcium supplement, providing slow-release, easily digestible nutrition to keep hens laying consistently while also offering benefits as an eco-friendly soil conditioner.
True Grit, Mussel Shell Grit is a natural, sustainably sourced calcium supplement made from granulated blue mussel shells, a byproduct of our Jervis Bay mussel production. Rather than letting valuable resources go to waste, we repurpose the nutrient-rich shells into a high-quality, slow-release calcium source, ensuring 100% utilisation of our mussels and contributing to our zero-waste production model.
This makes Mussel Shell Grit not only a highly effective supplement for poultry, supporting stronger eggshells, healthier bones, and better overall nutrition, but also an eco-friendly choice for farmers and backyard chicken keepers.
Calcium is essential for poultry, playing a critical role in eggshell formation, skeletal strength, and muscle function. Mussel Shell Grit offers 96% calcium content, providing a slow-release, highly digestible source of this vital mineral.
✔ Supports stronger, more resilient eggshells
✔ Reduces eggshell breakage & deformities
✔ Aids in bone health & skeletal development in poultry
Results from the Bega Eggs Trial:
Independent trials at Bega Eggs demonstrated a notable improvement in eggshell thickness, durability, and overall hen health when mussel shell grit was included in feed.
Blue Harvest’s Mussel Shell Grit is 100% natural and produced from sustainably harvested Jervis Bay mussels. Unlike synthetic calcium sources, this grit is an environmentally responsible alternative, repurposing shell byproducts into a high-value agricultural supplement.
✔ Zero-waste production process – 100% of the mussel is utilised
✔ No artificial additives or chemicals
✔ Supports sustainable farming & animal nutrition
With a consistent 2-4mm grit size, Mussel Shell Grit is designed for efficient uptake by poultry, ensuring optimal digestion and calcium absorption. A finer powdered version is also available for alternative feeding methods and soil conditioning.
✔ Optimised for poultry digestion
✔ Available in granulated (2-4mm) or fine powder
✔ Enhances feed efficiency & nutrient absorption
Mussel Shell Grit is not only valuable for animal feed but also serves as an effective soil conditioner. When applied to agricultural land, it helps:
✔ Improve soil pH by reducing acidity
✔ Enhance soil structure & water retention
✔ Provide slow-release calcium for plant growth
A sustainable shell grit source that reduces food waste
No artificial ingredients, preservatives, or fillers
Responsibly harvested from the pristine waters of Jervis Bay
Provides a slow-release, highly digestible source of Calcium.