Should probiotics or compound enzymes be added to the concentrate?

Everyone said, I want to produce concentrated material, want to add probiotics or compound enzyme to the feed, the cost of that good probiotic per ton concentrated material is 30, and the cost of compound enzyme is 50 yuan. I hope you can give us some advice! If pharmaceutical feed additives are added to the concentrate, it is recommended to add compound enzymes. -Thank you. Thank you.-if your concentrate does not contain drug additives, you can add probiotics instead. -there are antibiotics, drugs, nitrates.-compound enzymes, probiotics seem to be rarely added.-are there any premixes without drug additives? -compound enzyme.-maybe compound enzyme. Okay.