Poultry Health

Crushed and graded limestone products are an important component of a feed regime for poultry flocks. Graymont supplies several grades of quality grits and finely ground materials suitable for layers, broilers and breeders from various supply points across Graymont.


A number of factors should be taken into account when selecting a suitable limestone product such as bird species, life stage, feed delivery system and the calcium content of seasonal or standard feed regimes. 

Poultry health products available in the regions we operate include:

  • Australia - Calcimate® Grits, Calgrit®
  • Malaysia - CalCarb for broilers only
  • North America - Supercal, Shell Mix, Calco, Zero Grind, Poultry Grit
  • New Zealand - Drier Chip

Additional Resources


Did you know?

There are three distinct types of limestone, defined by their magnesium carbonate (MgCO3) concentrations. These types are Dolomitic (35 to 46% MgCO3), Magnesian (5 to 35% MgCO3) and High calcium (less than 5% MgCO3).