All eggs sold in the UK must be stamped with the method of production: 0=organic, 1 =自由放养的, 2 =谷仓, 3=笼养的，这也必须在鸡蛋盒上注明. When you see the British Lion symbol on your box of eggs, this tells you that the eggs are British-laid 和 that the laying hens have been vaccinated against salmonella.
很像散养的母鸡, organic hens 享受无限的户外牧场 在白天. At night, organic hens are housed in barns that contain no more than six hens per square metre. The maximum number of hens that can be kept in an organic free-range flock is 3,000.
放养的蛋来自于那些, 在白天, 享受无限的户外牧场.
At night, free-range hens are housed in barns which keep them safe. This also allows them to express normal behaviour with perches for roosting 和 a maximum of nine hens per square meter of usable inside space. For free-range hens, the maximum flock size on an 八大胜在线向 farm is 16,000 birds.
Free-range hens must be provided with litter to allow the hens to perform natural behaviours, 和 which covers at least one-third of the floor surface.