The UK government commissioned an investigation into the welfare of intensively farmed animals from Professor Roger Brambell in 1965, partly in response to concerns raised in Ruth Harrison's 1964 book, Animal Machines. On the basis of Professor Brambell's report, the UK government set up the Farm Animal Welfare Advisory Committee in 1967, which became the Farm Animal Welfare Council in 1979. The committee's first guidelines recommended that animals require the freedoms to 'turn around, to groom themselves, to get up, to lie down and to stretch their limbs'. These have since been elaborated to become known as the Five Freedoms of animal welfare:

1> Freedom from thirst, hunger and malnutrition.

2> Freedom from discomfort due to environment

3> Freedom from pain, injury and disease

4> Freedom to express normal behavior for the species

5> Freedom from fear and distress