These requirements in effect ban confined cages for livestock, known as battery cages for poultry and gestation crates for hogs. The wide-ranging coalition backing these laws includes a mix of ...

The term "battery" comes from the arrangement of the cages in rows and columns ... according to Michigan Allied Poultry Industries. The top producers include 17 farms with 15 million birds.

NAIROBI: The battery system of poultry keeping was a result of the ... In this system layers are confined in cages that are designed to supply food and water and laid eggs rolled out to a ...