Jamie in Chile is correct. It's just one grain grown instead of another, or often just another variety of grain that is less palatable to human beings or even just harvested and processed in a less meticulous manner, or simply harvested a little early (as for hay or silage production).
There's a common misconception that animals can eat a significant amount of straw (which is distinct from hay, straw is what's left over AFTER the grain is harvested), ultimately most feed is not a waste product but requires a similar level of investment and land usage as human grade foods, it mostly just has looser regulations on storing and processing.
On occasion animals may be fed spoiled/moldy grain, but keep this in mind: bioaccumulation.
Animals fed contaminated grains result in contaminated carcasses, and these toxins are largely heat stable so no realistic amount of cooking is going to change that.
teo123 wrote: ↑Sun Nov 03, 2019 11:19 pm
I don't know. Arguing for that requires some quite specialized knowledge, which takes ages to learn.
Arguing for just about anything empirical, even f*cking arguing against Flat-Earth, requires "quite specialized knowledge". So that point is just kind of defeatest on the point of arguing for anything ever. And yet people can can do change their minds.
The ecological argument against animal farming is very strong. It's strongest against cows, but also very strong against farmed fish, chicken, pigs.
There are ways to produce meat more ecologically, specifically pork if fed a diet of feces and compost -- however, that is no longer done and can no longer be done due to public health concerns. It's not a viable means for correcting the meat industry; it just needs to be replaced by mock meats and clean meats (cellular agriculture).
If you don't wan to learn all that, you can just appeal to the consensus which is strong already and growing as research on the environmental harms amasses.
teo123 wrote: ↑Sun Nov 03, 2019 11:19 pmIt's probably much better to argue for veganism in terms of nutrition
You can make a rock-solid case for reducetarianism on nutritional grounds. You can pile on population data like Okinawan diet patterns, Maditerranean diet patterns, Adventists, and you can add to that the concordance of mechanistic evidence and the limited intervention studies we have.
The trouble is that making a case for veganism (not just reducetarianism) on health grounds relies on mechanistic arguments and animal models which people are more likely to doubt (because of whatever distrust of science, and because "humans are special").
Veganism in theory also only represents only a small improvement in health outcome over radical reduction or vegetarianism.
If veganism only gives a person an extra couple years of life vs. vegetarian with limited dairy/eggs and meat once a week, but is significantly harder to do and perceived to be a large sacrifice, it's a hard case to make.
While most people might cut back on animal products to save a decade of life, most people are probably willing to give up two years off the ends of their lives for occasional cheese and a weekly indulgence of meat.
It's a cost benefit analysis for the person you're trying to convince, and unless somebody just isn't that into food to begin with or is *really* obsessed with living as long as possible, you're probably not going to find that argument goes far.
teo123 wrote: ↑Sun Nov 03, 2019 11:19 pmand ethics, rather than in terms of ecology. Except for the antibiotic resistance, that argument is very easy to defend.
Antibiotic resistance is a strong argument, I think we can all agree on that.
The ethical argument is also very strong, but because many people don't care that much about non-human animals making the ethical argument from environmental (and antibiotic) impact on human beings is much easier. Otherwise, you need to first convince a person of the importance of caring about non-humans, which is an extra step. It can mean getting really deep into metaethics. If you think the specialized knowledge needed for an environmental argument is steep, metaethics makes that look like a mole hill.
You've got to be ready to debunk any assortment of theological claims, deontological ones, and boil things down to consequenitalism then explain how we can't just arbitrarily devalue other beings because we want -- and that can take some hard analogies (like racism) which can strike people are pretty severe. The getting into cognition and consciousness, etc.