I heard something to do with Nitrogen and …cow farts(?) I am really unsure of this and would like to learn more.
Answer -
4 Parts
- Ethical reason for consuming animals
- Methane produced by cows are a harmful greenhouse gas which is contributing to our current climate crisis
- Health Reasons - there is convincing evidence that processed meats cause cancer
- it takes a lot more calories of plant food to produce the calories we would consume from the meat.
Details about the answers are in the comments
Today in the developed world, meat animals such as cattle and hogs are mostly fed fodder — not a byproduct of human food, but rather crops grown specifically as animal feed. Farmers who grow those crops know how much water they’re using, because they keep track of their irrigation needs.
https://en.wikipedia.org/wiki/Fodder#Types
even the particle you linked says they are fed silage and that the legumes they are fed are from spent malt.
Some agricultural byproducts fed to animals may be considered unsavory by humans.