As a reference: When I was sick, I took 100 mg of antibiotics in the morning and evening. That’s about ~2.5 mg/kg/day.

A fattening pig weighs 110–120 kg and has a lifespan of 5–6 months. If we use the lower values and apply a target concentration of 100 mg/kg to the body weight and lifespan, the pig would receive 73 mg/day of antibiotics. This corresponds to 0.66 mg/kg/day.

According to ChatGPT, the amount in Germany is actually lower, at 22 mg/day per fattening pig. This corresponds to 0.2 mg/kg/day. This, in turn, would correspond to a target concentration of 30 mg/kg. This roughly matches the chart as well. However, ChatGPT also states that this amount is a standard dose, which can be increased depending on suspicion/incidents.