• £5.85

Intra Calferol is an intensive liquid calcium, vitamin D3 and magnesium premix for all poultry and bird species, essential for bones and egg shell production. It has a very cost effective dosing rate.

  • Calferol is pH neutral and has excellent vitamin D3 stability properties.
  • The mixture of calcium salts and calcium gluconate has a high bio-availability.
  • The vitamin D3 is the essential component for the bone formation or for a good egg quality.
  • The micro element magnesium is essential for the bone and egg shell matrix. 
  • Particularly effective in older laying hens whose egg shells thin with age
  • Quantity discount available for pallet purchase - please call to enquire

All elements of this high quality, calcium supplement work together to ensure strong bone formation or a reduction in poor egg shell quality as appropriate.

The result of using Intra Calferol, liquid calcium premix is improved bone strength and a vast reduction in the number of eggs with poor shell quality.

The reduction in cracked eggs after 4 days of using Intra Calferol

General dilution rate:- 

1 ml per 1 Litre (0.1%)


After any water treatment it is essential to sanitise the water lines to avoid the build up of residue or bio film. For this we recommend Intra Hydrocare.

The science behind how Intra Calferol liquid calcium premix works:-

The body needs vitamin D3 to absorb calcium.  Without enough vitamin D3 in poultry, the birds can't form enough of the hormone calcitriol.  This in turn leads to insufficient calcium absorption from the diet.  In this situation, the bird must  take calcium from its stores in the skeleton, which weakens existing bone and prevents the formation of strong, new bone. Bone Health, one of the most important roles of vitamin D3 is to maintain skeletal calcium balance by promoting calcium absorption in the intestines, promoting bone resorption by increasing osteoclast number, maintaining calcium and phosphate levels for bone formation, and allowing proper functioning of parathyroid hormone to maintain serum calcium levels. Vitamin D3 deficiency can result in lower bone mineral density and an increased risk of bone loss (osteoporosis).

The eggshell is a highly specialized mineralized structure, which provides protection against physical damage and penetration by micro-organisms. The egg shell consists of the inner and outer shell membranes, the true shell and the cuticle. The crystalline layer of the shell, which is responsible for its mechanical strength, consists of more than 90% calcium in the form of calcium carbonate. Calcium is absorbed from the feed in the intestine. Provided that sufficient calcium (3.8–4.2%) is present in the feed, the process of calcium uptake, deposition and excretion is regulated by vitamin D3 and its metabolites. Calferol takes care for sufficient Calcium to build up this eggshell and sufficient level of vitamin D3 to absorb the calcium.

Intra Calferol is a concentrated liquid premix of calcium, vitamin D3 and magnesium which is easy to absorb by the intestines of the animal.  The high quality feed supplement supports birds to keep the calcium balance in an optimum condition.

 other hints:-

Ordering the 1 litre size? We can send up to 2 x 1 litre bottles of liquid via the post for the same postage cost as 1 x 1 litre. Customers from the Channel Islands and Northern Ireland please enquire for shipping rates.

If you would like some guidance regarding the dosage of any of our products, please do get in touch. Part of our poultry and game bird service includes the creation of a bespoke water program, FREE of charge, for Quill Productions customers upon request.

Click Here for the Safety Data Sheet

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