Material that is provided to an animal to encourage natural behaviours such as foraging, pecking, scratching and perching.
For pigs this includes manipulable materials such as straw, hay, wood, sawdust, mushroom compost, peat or a mixture of such, to enable proper investigatory behaviour (rooting)
For laying hens and broilers this includes perches, straw bales, pecking substrates and friable litter
