> You can get 30k pounds of beef from 50 cows?

This article [1] says you get about 500-ish pounds of beef from one cow, so 25,000-ish pounds from 50 cows? They weren't massively far off the mark there.

[1]: https://cattledaily.com/how-much-meat-do-you-get-from-one-co...

30,000 split 50 ways is 800lbs per cow (270kg), seems not unrealistic.

Even if you halve the yield to 400lbs then it's only 100 cows