What industry category does chicken belong to?

Raising chickens belongs to aquaculture.

Breeding is a production department that uses the physiological functions of domesticated animals, such as livestock and poultry, or wild animals such as deer, musk deer, fox, mink, otter and quail, and transforms plants such as pasture and feed into animal energy through artificial feeding, so as to obtain livestock products such as meat, eggs, milk, wool, velvet, skin, silk and medicinal materials. It is an extremely important link in the material exchange between human beings and nature.

Aquaculture is one of the main components of agriculture. An important part of agriculture, together with planting, is the two pillars of agricultural production.