I wouldn’t recommend feeding minced meat to venus fly traps. Your plant actually doesn’t need insects that often (once or twice per month at the most). How many times have you fed it in the last week. Real meat more often than not will kill the traps. I believe it has to do with the fat content of the meat (that insects don’t really have).

Also, have you been watering with rain or distilled or filtered water? Tap water is BAD for carnivorous plants…