Nomads will move into the city even if this need is not satisfied, only a bit slower, and also will pay lower taxes. Therefore a goat farm is not worth building when the oriental city is still a small one. When built one goat farm can feed 450 Nomads or 600 Envoys. To boost taxes, it's good to build a goat farm for at least half of your population.

Goat farm field 2
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