Are farm animals emotional?

Do farm animals experience emotions, or are the behaviours people perceive as emotions purely an instinctive response?  Do cows, for example, feel happy or depressed?  And should a farm animal's ability to react instinctively, or to respond emotionally, affect the way that we care for and handle livestock? ffinlo Costain, the chief executive of Farmwel, is joined by Professor David Main from the Royal Agricultural University, and by Rachel Horler, a cattle farmer from Maundrils Farm in Somerset, UK. Produced by Farmwel.