français vers anglais Sciences Agriculture Animal husbandry

I am unsure of the meaning of this term. According to all the research I've carried out on the Internet, the meaning still appears unsure. The document I am translating relates to animal husbandry. The actual context is "ou la démedicalisation en production hors-sol telle celle engagée en production porcine".

I believe they are talking about reducing the amount of drugs given to animals which are caged rather than free-range. The term "demedicalisation" seems to fit this but should I use this term or explain it as "reduction in the use of drugs"?
Help, as usual, appreciated.