In the UK we try to ensure we comply with the 5 freedoms of animal welfare, which are:
Five Freedoms are essential to the welfare of any animal kept in captivity:
freedom from hunger or thirst.
freedom from thermal or physical discomfort.
freedom from pain, injury and disease.
freedom from fear and distress.
freedom to indulge in normal behaviour patterns.
Some improvements can still be made, but we are way ahead of most of the World. Animals treated with respect and kept in right conditions, perform and taste better