 It regularly happens as part of traditional and intensive pig farming.Pigs are slaughtered at different ages.Generally they can be divided into piglets, which are 1.5 to 3 months old; the fattening pigs, intended for pork and bacon, which are 4 months to one year old; and finally the older pigs, such as sows (female pigs) and boars (uncastrated male pigs).