Fodder chalk and lime for feed production
The quality of Dankalk’sfeed chalk, mineral chalk and lime shells ensures high uptake and therefore high utilization of the lime and chalk used. You can read more about our feed products on this page. Click on the product you want to read more about below.
See also our other products for agriculture.
Fodder chalk
CaCO3 – Feed chalk for agriculture
The product is made from writing chalk, which is crushed, dried, pulverized and sieved.
Today, chalk is used as a source of calcium in animal feed. Since the chalk from Dankalk is very easily absorbed in the animal’s intestines, the product has a very high utilization rate.
Mineral chalk
Mineral chalk – F10
Mineral chalk – F12
CaCo3 – Agriculture
F-12 Mineral chalk
The product is made from writing chalk, which is crushed, dried, pulverized and sieved. Mineral Chalk F-12 has a coarser structure than Feed Chalk and Mineral Chalk F-10. Mineral Chalk F-12 is currently used as a source of calcium in animal feed.
Lime shells for chickens
We recommend Limestone shells
– An important source of calcium for chickens and other poultry
Limestone shells are formed naturally from coral and bryozoan limestone. The product has a grain size of 1-3 mm and contains 37.8% Calcium
Limestone shells are approved for organic
Poultry need a daily supply of mineral nutrients. Of the 15-20 current mineral elements, calcium (Ca), phosphorus (P), sodium (Na) and manganese (Mn) are some of the most important minerals.
Calcium is the mineral that needs to be supplied in the highest quantity and quality on a daily basis to achieve the desired results. Too little and too much calcium can result in problems, so it is important that the daily calcium intake corresponds to the animals’ needs in relation to age and performance.
For growing animals such as broilers and live chickens, the daily calcium requirement is around 1% of the daily feed ration. Broilers and live chickens are typically given calcium in the form of powdered chalk feed, produced from a good quality raw material with high calcium availability.
For laying hens, the daily calcium requirements are high. Today’s egg-layers have an egg performance for many months of over 90% laying, meaning many hens lay one egg every day. An eggshell weighs about 5-6 grams and is almost entirely made up of calcium carbonate (calcium carbonate). The daily calcium requirement is therefore around 3.5-4.5% of the daily feed ration.
Combat calcium deficiency with chalk and lime shells
Calcium deficiency derived from too little supplementation or using the wrong calcium source can lead to decreased egg yield and thin-shelled eggs. To give the hen the best opportunity to absorb the necessary daily amount of calcium, it is important that calcium is provided in the form of a calcium source that is available throughout the day. Hens only consume feed for part of the day, so the best way to feed them is to provide calcium in the form of both small and large particles. The small particles are typically distributed as finely ground chalk.
For a number of years in Denmark, large particles have been allocated in the form of oyster shells or mussel shells. In other countries, limestone of varying quality has typically been used. Dankalk has for some time focused on finding the most suitable calcium source to cover the need for the coarse particles. Oyster shells have been the preferred source in the past, but changes to the product have necessitated a re-evaluation. Based on current analysis of a wide range of products, Dankalk has determined that the best source of calcium for laying hens is a combination of chalk and limestone shells.
In the future, lime shells will be included in feed mixes for egg-laying hens along with chalk. In the future, the product will also be sold as a raw material that can be used as a supplement to complete feed or if the animals are fed supplementary feed and grain.