Farmcal feed grade lime is a high purity limestone from our Cong quarry. It has a calcium carbonate value of 98% and a declared calcium value of 38% normally (39-39.5%).

It is available in bulk, 1 tonne mini bulk and 25kg bags. It is Department of Agriculture and FEMAS approved.


Why is calcium necessary for livestock?

farmcal3Calcium is one of the main minerals needed by animals to grow, develop and produce.

Its main function in the animal is for bone and teeth formation, smooth muscle contraction, e.g. the rumen, and for blood clotting.  A deficiency or imbalance in calcium can cause poor growth rates, poor bone development, reduced milk output, displaced abomasums and more obviously milk fever.  A lesser known fact is that it can also cause urinary calculi in male animals, (intact or castrated!)

Why do we actually need to add it to rations?

We need to add calcium to rations due to the increased diversity of what we’re feeding our livestock.

The only forage you can feed with good levels of calcium in it is Lucerne or Clover Hay/Silage.  Although Lucerne is being grown by some farmers down south, it’s not common here in Ireland.  Obviously the most commonly fed forage is Grass Silage and unfortunately it generally doesn’t have adequate levels of calcium. The other point to consider is that more Whole crop is being grown and fed here in the west now and its calcium levels are even lower than Grass Silage, the same can be said for Maize Silage.  Then next we throw in grain, which not only has low calcium, but also high phosphorus, which means the need for calcium is even more important.

Who should be supplementing with Calcium?

farmcal2All farmers should make sure they’re feeding some form of calcium supplementation.

It can be fed through a diet feeder or more simply thrown on the silage in front of the stock.  It’s not particularly hard to do and yet still many farmers don’t feed any at all.  It’s of vital importance, especially in a bad year, where silage quality may be poor and more meal is being fed.  The other concern is, due to the economic situation many farmers are facing, minerals are quite often seen as just another added cost, but Calcium is the cheapest mineral you can feed your stock.

What rate should it be fed at?

This is where it gets a bit tricky.

Dosage depends on the animal type/age/weight and purpose.  For adult beef cattle receiving NO OTHER MINERALS it would be between 2 – 4 ounces and the same for Dairy cattle, depending on stage of lactation.  And sheep would be about 10 % of cattle rate. And obviously do not feed Calcium to animals pre-lambing or pre-calving unless under advice from your veterinarian or nutritionist.

What sort of price is it to use?


75gms1c/10 x sheep/day


It’s nothing!  What’s the cost of poor growth rates or reduced milk yields??

  • Retarders
  • Superplasticers (self compacting concrete)
  • Polypropylene Fibers
  • Steel fibres
  • (GGBS)Ground granulated blast furnace slag
  • Accelerators
  • Slip form mixes
  • “Our milk solids sold per cow to September 30th has increased over 7% with 2 less cows than last year. This was achieved with no increase in meal fed and a decrease in nitrogen use. Slurrycal is helping in that nitrogen reduction. We are seeing a better response to slurry in terms of grass growth and a marked increase in clover in our fields; in some cases where clover had all but disappeared from paddocks. The power in the slurry is allowing us to reduce our chemical nitrogen use which encourages clover growth and the cows are responding in the milk tank I am very impressed with Slurrycal and am delighted that we made the switch to it”.

    John Joe O'Sullivan Dairy Farmer
  • “It has the same drying capacity on the cubicle as the 10% blend and other cubicle products I have used and it is easier to work with because there is very little dust. It certainly does its main job of helping to keep cubicles dry, while also helping to maintain low SCC and low levels of mastitis. When I started to agitate and pump slurry, I knew that Slurrycal had done its job as promised on the slurry too. There was no crust whatsoever, and the tank was like it had been aerated. The time it takes to agitate is well back and it stays agitated for a long time. The slurry is darker in colour with a very evident reduction in smell. The response in terms of grass growth when the treated slurry was applied was very impressive – I would say that the slurry is giving a response similar to what you would get from a bag of 27.2.5. 5. The grass is a healthier, greener colour and re-growths are quicker.”

    John McCarthy Dairy Farmer

Contact us today to find out more!