There are many kinds of chicken raising. In industrial techniques, people using modern technology to control the disease and nutrition providing then provide negative consequences to human consumption. So the only way to good health is to raise chicken organically by letting the chicken consume corns, weeds, and organic grains with the freedom to walk. Rasing this way could take up to 3 months to be harvest while industrial technology takes only one and a half months.
Rasing as you can see in the video, will get you good chicken meat and test even better. In Cambodia, there are two types of chicken meat in the market. The first type is from industry usually chemical and not expensive (about $2 per kg) as a chicken that raises organically as you have seen in the video ( price about $5 per kg).
I believe, a chicken does need freedom in living they need the freedom to walk even if they are rasing as meat production means.