Oh shit oh fuck.
But on a more serious note, farms breeding huge amounts of animals that age fast and are super fertile is a huge environmental concern. When livestock escapes and hybridize with wild populations it will make a lot of areas barren.
Collapse is going to suck because its going to be a cascade of shitty capitalism-caused problems, not just one or two.
All these invasive species are called "Super-" this or "Killer-" that yet I have yet to see any of them wipe out more than 30% of the population. None of them live up to the hype.