Question juridique clé
Whether the appellants could invoke legitimate reliance on the approval regime for serially manufactured stall systems.
Solution extraite
No. The mere fact that such systems are approval-bound does not create a sufficient basis to assume that a privately installed system complies with animal-welfare rules.
Motifs extraits
Approval is granted only for systems that satisfy animal-housing requirements, and the record did not show that the installed equipment was an approved original type. If the equipment was not certified or had been altered, responsibility remained with the appellants. The non-compliance was also readily ascertainable by simple measurement.