Unfortunately the dogs are the ones who suffer in this type of incident. The OWNER who is supposed to be in control of their animal at all times are not punished nor neglect to fence or tie up their dogs are the ones who need to be held responsible.
I don't want to kill a dog but no dog is ever going to make me not have livestock just because it thinks its food. That dog is not mine and that dog needs to be in the owners control. At that point the dog is to be shot dead if ever found:
As stated in Chapter 40, section 156 of the Massachusetts General Laws
Section 156. Any person may kill a dog which suddenly assaults him while he is peaceably standing, walking or riding outside the enclosure of its owner or keeper; and any person may kill a dog found out of the enclosure of its owner or keeper and not under his immediate care in the act of worrying, wounding or killing persons, live stock or fowls, and if any person shall kill or attempt to kill a dog so found, and in the act of worrying, wounding or killing persons, live stock or fowls, he shall not be held liable for cruelty to the dog unless it shall be shown that he intended to be cruel to the dog, or that he acted with a wanton and reckless disregard for the suffering of the dog. Prompt killing of a wounded dog, or a prompt report to the owner or to a dog officer of the wounding of the dog, shall be considered evidence of sufficient regard for the suffering of the dog.