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An animal unit rating is an animal’s energy demand relative to that of a 'standard animal'. Energy demand is largely a proxy for dry matter intake, i.e. how much pasture an animal eats.
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Animal units are a way of comparing animals of different classes and species so they can be expressed in a standard format. The most common animal units are an AE (Adult Equivalent) for cattle and DSE (Dry Sheep Equivalent) for sheep.

Animal Units can be used for property valuations, business analysis, enterprise analysis, determining carrying capacity, feed budgeting, etc.

Therefore, they need to be calculated accurately and consistently updated as the growth of the animal changes across its lifetime.

(Cited from Bush Agribusiness - https://bushagri.com.au/animal-units)

Animal units are also primarily used to record your stocking rates and grazing load on pasture. These unit systems differ around the world. You can pick the most appropriate unit system for your property based on your current location or pick a different unit system.

The animal unit can be selected through farm settings on the Web App.

The following window will open with all the available settings. Select Animal units. You can now choose the desired unit for livestock on this farm.

There are two ways to update animal units for mobs of livestock on the Mob Management platform, either automatically, based on body weight or manually via the animal unit record.

By default, animal units will need to be manually updated, however, you can turn on the auto update function via the settings in AgriWebb.

Choosing to calculate the animal unit by animal body weight automatically updates the animal unit value as the mob weights change. This ensures accurate data for grazing management, stock reconciliation and knowing total stocking rate on farm.

From the Map, select the mob marker and set the toggle to Mobs. Select the mob you'd like to create the record on.

Press & hold the animal unit box and it will open up the animal unit record to be adjusted.

You can update the DSE value for one mob or add in multiple mobs to do this in bulk.

Select the Livestock tab, then Add Records. Choose the Animal unit record. It will display as the chosen unit (e.g AE or DSE).

Enter the desired fields into the form and press Save.

AgriWebb's Mob Management subscriptions allows the selection between the following Animal Unit Systems for various countries:
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*7.6 MJ ME/day = 1kg

​Sources for definitions