Sometimes what's going on is that the microbes are helping them digest food more efficiently from the same diet, so they're taking more energy from their food, but other times, the microbes are actually affecting their behavior.
Manchmal helfen die Mikroben mit einer effizienteren Verdauung der Nahrung, sodass der Energiegewinn größer ist. In anderen Fällen verändern die Mikroben das Verhalten der Mäuse,