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Battery cages

Battery Cages

A hen kept in a battery cage spends her entire life in a small overcrowded cage, inside a large, windowless shed

The environmentally-controlled shed contains many rows of cages, which may be stacked one on top of the other, several cages high. Each battery cage houses between three and eight hens, and as many as 45,000 hens may be kept in one shed.

A hen kept in a battery cage is given less than the size of an A4 piece of paper (only 550 square centimetres of space) to live out her life. Limited space and the barren cages means these hens cannot perform normal behaviour like perching, scratching, nesting. She won’t even be able to stretch her wings.

In highly automated sheds, conveyor belts carry food, waste and eggs along the rows of cages. Feeding and the hens’ living conditions are manipulated for maximum egg production. The sheds are noisy and may smell strongly of the hens’ waste and ammonia. The lighting in the sheds is kept dim to minimise aggressive behaviour among frustrated hens.

In December 2012, the Government released a new welfare code for hens that lay eggs which bans the standard battery cage. From 2022 onwards, it will be illegal for hens to be housed in battery cages in New Zealand. Colony cages have been approved as the a new caged housing system to replace battery cages. Colony cages breach New Zealand’s Animal Welfare Act 1999 as they do not allow hens to express their natural behaviour.

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