(a)
Codified version
Rearing techniques must be based as far as possible on the ‘protected rearing’ principle and on the ‘all-in/all-out’ principle. Cleansing, disinfection and depopulation must be carried out between batches.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-04 · Text as adopted (Official Journal); later amendments are not incorporated in this text.