The conscious mind is defined as the part of the brain that is responsible for self-awareness. There exist scientific tests to determine whether animals are self-aware, like the famous mirror test. Sheep, cows and almost literally every other animal except for dolphins and apes fail these tests. In this case I do not think that farm animals are truly fully alive like humans are, and furthermore are unable to experience suffering like humans can, and so ultimately I do not care very much about the activation of a whatever neural pattern in their brains corresponds to "pain", which really only exists as an evolutionary mechanism to stop the organisms from harming themselves.
There’s some interesting logical hoops you’re jumping through there to arrive at your conclusion, in particular lack of self-awareness means something is less alive, but hey, opinions and that. All I ask is they be informed, of which this one appears to be partial.
Again, I ask you how you can know animals can or cannot experience emotions, ‘cause self-awareness /=/ emotions, and your initial explanation of pain suggested you feel it’s more emotion-based than physical.
As a curiosity-inspired aside, what would you think about eating animals that are self-aware, by your standard?