It would be more precise to say “put down factory-farm meat production.” Of course, for most of us, doing this would sharply reduce meat consumption.
However, going altogether vegan for the environment might not be the best idea for people engaged in the excellent suggestion that Garrett_Connelly mentions below, though I can relate to not wishing to slaughter one’s animals. Urban and suburban chickens, quail, pigeons, ducks, rabbits, cavies, snails, and sometimes goats and so forth recycle fertility and can provide concentrated food sources. Accepting some animal-based food can enable people to live more exclusively by local gardening and less by factory farming of all sorts because animals can eat produce that humans cannot otherwise use, converting some part of that to human food, and other parts to fertility for plants.
Factory farming is always very damaging, whether it involves meat production or not. Among other things, it kills vast quantities of wildlife by the removal of habitat, as well as by the wholesale use of poisons.
Here’s just one example, though the video wanders a bit. Featured is Karl Hammer’s system at Vermont Compost, with healthy and mostly happy chickens producing high-end organic compost. There are somewhat different systems that use the same principles that can be used on suburban and even urban lots (https://www.youtube.com/watch?v=IWChH9MHkHg0.