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. 2022 Sep 21;101(12):102194. doi: 10.1016/j.psj.2022.102194

Table 8.

Required area for managing laying hens.

Item Unit CC8 CC12 EC8 EC12 AV BR
Living space per bird cm2/birds 432 432 758 758 1,111 1,111
The total farm area allotment for birds cm2/birds 1,133 1,037 1,235 1,169 1,353 5,987
The total farm area allotment for birds in Japan ha 1,595 1,460 1,738 1,646 1,905 8,428
Raito of poultry farm area to total farmland in Japan % 0.037 0.033 0.040 0.038 0.044 0.193

Abbreviations: AV, aviary; BR, barn; CC8, conventional cage 8-tier; CC12, conventional cage 12-tier; EC8, enriched cage 8-tier; EC12, enriched cage 12-tier.