A supermajority of animal feed comes from the waste product of crops we that were being grown anyway
According to the Alberta Cattle Feeders Association, 80% of the feed is composed of corn. According to the USDA itself half the corn grown in the US was used for animal feed, and 78% of the world’s soy production is made for animal feed.
Is the waste product of corn and soy included in these numbers?
The figure was almost by the middle of the page, search for the string “AT THE FEEDLOT, CATTLE ARE FED A DIET OF 80% GRAIN AND 20% FORAGES. (SILAGE AND HAY)”, on the section “Start weight, finish weight”.
As for the others:
Here’s the USDA source: https://www.ers.usda.gov/topics/crops/corn-and-other-feed-grains/feed-grains-sector-at-a-glance/:
And regarding soy, here’s from the WWF: https://wwf.panda.org/discover/our_focus/food_practice/sustainable_production/soy/
You obviously know way more than me about the subject but you gotta excuse me for taking anything from a website called “sacredcow” talking about the “plant-based industry” at the top of the page with a grain of salt, everything else I’ve seen online points to animal farming being incredible inefficient and a huge contributor to global warming and water waste.