if IBM is implementing the UCD MIB here, you should be able to pull data from your target device using the SNMP Library Sensor. If IBM is providing data based on a different MIB, you might try importing the same to PRTG with the MIB Importer.
Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.