I have brought up this before but nothing has seemed to get my son's market steer back on feed. He seems hungry and will go to town on the feed for about 5 minutes and then leave the feeder. Last night my animal chiropractor found a lump under his jaw and his jaw felt a little swollen. He thinks he has an abscess. About the time he went off feed, I caught him eating some briars (only thing green in my pasture) and immediately put an electric fence around the trees with the briars. Shortly afterwards he seemed to really slow down on his eating. I assumed it was because he was slowing down due to almost being finished and a hard finisher because he is out of Eye Candy. I have an appointment with a veterinarian tomorrow morning. If it is an abscess, should I have it lanced/treated or leave it alone and give him antibiotics? I am asking this cause I've heard some folks say it made things worse when they lanced an abscess.