This is one area where they optimize, they use vaccines now when they are young instead of antibiotics in their food. You are talking about dioxins, they use t

This is one area where they optimize, they use vaccines now when they are young instead of antibiotics in their food. You are talking about dioxins, they use that in the food and they don't have limits like meat for it. They found that it's still pretty close to the limit of meat and if you don't eat it daily it shouldn't be able to accumulate. They need some of those for the feeding process, but they know it's bad PR and try to find alternatives. This is something that can be monitored and optimized for. Btw they are fed mostly with soy and fish flour (salmon is a predator). It's very regulated, Salmon from Norway is a huge brand and they all would have issues that's why it's very regulated.