Borg don't eat.
It's direct electrochemical stimulus via regeneration.
Borg babies really really don't eat.
They're stuck in maturation chambers.
The Kazon are completely useles.
And still not worth a torpedo.
Imagine Peppie La Pew and that balck cat with the white paint stripe along it's spine.
Caretaker probably spent years swatting them.
And like cockroaches they kept reclaiming Ocampa.