It is based on milk price and milk company, post grazing residuals, supplement composition and your profit requirements from using a supplement.

The calculator assumes that metabolisable energy is the first limiting nutrient, but also takes into account the type of energy provided (e.g. starch, sugar, fibre), what effect this has on milk composition, and the value of fat relative to protein.

This calculator should not be used as a ration balancer.

Select your options to compare different feeds. Click on the + to open the input sections.

To read about the science behind this tool click here.