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A furnished cage, sometimes called enriched cage, colony cage or modified cage, is a type of cage used in poultry farming for egg laying hens.Furnished cages have been designed to overcome some of the welfare concerns of battery cages (also called 'conventional' or 'traditional cages') whilst retaining their economic and husbandry advantages, and also provide some of the welfare advantages ...
Early battery cages were often used for selecting hens based on performance since it is easy to track how many eggs each hen is laying if only one hen is placed in a cage. Later, this was combined with artificial insemination, giving a technique where each egg's parentage is known. This method is still used today. [citation needed]
The benefits of free-range poultry farming for laying hens include opportunities for natural behaviours such as pecking, scratching, foraging and exercise outdoors. [18] Both intensive free-range poultry and "cage-free" farming with hens still being confined in close proximity due to high stocking densities have animal welfare concerns.
Cage-free egg laws in 10 states may also be responsible for some supply disruptions and price increases. The laws set minimum space for chickens or cage-free requirements for egg-laying hens.
Poultry can also be kept in a barn system, with no access to the open air, but with the ability to move around freely inside the building. The most intensive system for egg-laying chickens is battery cages, often set in multiple tiers. In these, several birds share a small cage which restricts their ability to move around and behave in a normal ...
California, like other states including Arizona, Massachusetts and Michigan, requires all eggs sold in the state to come from cage-free hens, which typically are more expensive.
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