How many stock units do you have?
Stock units are a simple system comparing the energy consumption (feed requirements) of various classes of stock.
One stock unit is equivalent to one ewe with a lamb at foot. This translates, depending on breed and age etc, roughly to: Using stock units as a value helps you to calculate your stocking rates. For example, if you want to graze a horse, you need to reduce your stock by two cows, or 10-12 sheep.