Thanks to this modification you can set the mass/volume unit. You can also add a new unit according to your needs.
You can open the unit management menu using the button in the general settings.

By default, the added units are: cubic meter, gallon, pound, kilogram

Changelog (1.0.0.1):
- fixed water bar showing even when not needed in the Animals tab
- fixed lua error 'attempt to call local 'superFunc'(a table value)'
- added support for "Target Fill Level" mod
- added support for "Straw Harvest Pack" mod
- added support for "Def Pack" mod

For more information, full changelog, help or to report a bug, please visit GitHub.