It takes significantly more feed to raise a cow. The calories extracted from cow meat is extremely inefficient considering the high number of calories in (feed) and water. So, you could not use feed (vegetable death-per-calorie!) because it's something like a 8:1 calorie ratio for feed to a pound of beef. You'd have to pasture raise the cows.
There is no feasible way to ensure that all food is pasture-grazing cow meat at a price point accessible to most Americans.
There is currently no cruelty free-way to have cheap, accessible calories. If you really wanted the lowest death-per-calorie, one of the most feasible approaches would be consuming large amounts of rice.
I don't think anyone would want to subsist exclusively on a diet of rice, beans, and dietary supplements.
It takes significantly more feed to raise a cow. The calories extracted from cow meat is extremely inefficient considering the high number of calories in (feed) and water. So, you could not use feed (vegetable death-per-calorie!) because it's something like a 8:1 calorie ratio for feed to a pound of beef. You'd have to pasture raise the cows.
There is no feasible way to ensure that all food is pasture-grazing cow meat at a price point accessible to most Americans.
There is currently no cruelty free-way to have cheap, accessible calories. If you really wanted the lowest death-per-calorie, one of the most feasible approaches would be consuming large amounts of rice.
I don't think anyone would want to subsist exclusively on a diet of rice, beans, and dietary supplements.