https://www.whyanimalsdothething.com/why-a-vegan-diet-will-kill-your-cat-and-sicken-your-dog
The only way to not participate in this industry is to not have any carnivores as companions. Because otherwise you are killing your own sentient creature.
Link to studies please.
Nobody is suggesting we feed cats tofu and spinach. The naturalistic argument and yelling “We don’t know!” a bunch really only works if you are proposing we feed cats only raw meat from fresh kills, what they would eat in the wild. Pet food isn’t a pet’s natural diet, vegan or not, and it all has to be fortified.
I don’t believe in such a naturalistic argument though. Humans are able (key word, able, most don’t) eat healthier with modern diets. Why would we assume we can’t develop food that is just as healthy or even healthier than an animal’s natural diet?
https://pubmed.ncbi.nlm.nih.gov/6380542/
Indeed, the cat appears to have less capability to adapt to most changes in dietary composition because it cannot change the quantities of enzymes involved in the metabolic pathways. This evolutionary development has resulted in more stringent nutritional requirements for cats than for omnivores such as the rat, dog, and man.
Biologically, humans are omnivores. Your suggestion would work great with other omnivores. I’m all for balanced healthy humane diets for the animals we are responsible for feeding! But not to the point of neglect.
When I said study I meant an observational or longitudinal study measuring health outcomes, not a description of the mechanisms at play. Such studies are important to concluding that alternative diets are already nutritional or elucidating the flaws so that they may be addressed.
Don’t you think such knowledge of cat digestion would be integrated into feeding a cat in a vegan way? We are incredibly good at synthesizing nutrients these days through both chemical processes and modifying microorganisms or plants. We can produce “higher forms” of things such as vitamin A and D without invoking animal biology, these aren’t hypotheticals, such things are already common in the huge supplement and cosmetics industries.