Assuming this is in the context of some apocalyptic event requiring you to do this, relying on animal husbandry seems obviously wrong. Plus you only get ~10% of the energy from the lower trophic level.
The prevalence of meat comes from a society of abundance.
Evidence of early hominids and other less advanced proto-human or human groups shows a pretty significant amount of calories came from meat. Some suggest 60-80% of calories came from proteins, largely meat, at various times in history.
Both of these estimates are way higher than what we know people eat today, where meat and dairy are 18% of worldwide calorie consumption (27% in the US).
So I think the abundance we see today is actually due to the availability of non-animal dietary sources.
The prevalence of meat comes from a society of abundance.