Pasture feed value

Pasture feed value is measured as metabolisable energy (ME) or digestibility. ME is the more useful unit for many applications.

 

Metabolisable enery (ME)

ME is the energy in a feed available to the animal after allowing for faecal, urine and methane losses. It is measured in megajoules per kilogram of dry matter of the feed (MJ/kg DM).
ME is the energy available to the animal for maintenance, growth and production.

 

 

Typical ME in MJ/kg DM (these vary widely)

 

Dry matter digestibility

Digestibility is the percentage of energy in a feed available to the animal after faecal losses. Dry matter digestibility can be calculated as:

 

 

Relating ME and digestibility