Earlier quoted context omitted.
Yeah, and from what I understand, it was a tax on revenue, not profit. If you harvested 10 carrots and had to give 3 or 8 carrots to your horses, you were still tithed 1 carrot.
Only the very wealthiest of land-cultivating peasants owned large animals at the time, though (and pretty much never horses). Also, you wouldn’t feed human edible vegetables to animals, that would be very wasteful. More importantly, these income taxes were based on rather small fraction of revenues, since they were only based on agricultural production, and not on household production. Obviously, it was extremely imp…
...yes, you would. What else could you feed them?
Animals get lower-quality stuff. Wheat for people and oats for horses. But it's not like people can't eat oats.