New engines are absolutely broken in at the factory, on a dyno, redlined through the gears to seal the rings. 90 percent of the break in is done on the dyno. baby the first 150 miles, vary rpm, load and speed do not worry about going over 5500, but do no hold high rpm, the motor still needs to loosen up under real life conditions/loads. good to shut off and cool it down periodically in the beginning only to let the rings cool, but no need to let the engine get back to room temperature new casting methods and alloy's are so good that heat cycling the rest of the engine is basically useless. (when i say let the rings cool its not for the metal, its only to keep high and low points from causing extra friction and extra leakage at the same time and causing glazing and improper seal) - but then again that's more for a rebuilt engine with brand new rings and cross hatching on the cylinder walls - not one thats basically broken in from a factory.
They tell you to keep under 5500 so you don't kill your self on an unfamiliar bike, and have your widow sue ducati. Most motorcycle accidents happen on new bikes. Ride it like you stole it is what most guys who take apart engines will tell you. - Ride it how ever you normally would ride is my advice. I changed the oil and filter at 100 miles 300 and 600 on my DX, excessive but I like looking at it to know whats going on.