Any animal, animal product, or animal feed which the Commissioner has reasonable cause to believe contains or bears any biological residue may be immediately detained or quarantined by written order of the Commissioner until it can be determined in a manner acceptable to the Commissioner that the animal, animal feed, or animal product does not contain or bear a biological residue, or that the biological residue therein is within tolerances which are established by, or approved by, the Board, and the detention or quarantine is removed; or the animal, animal product or animal feed is destroyed or otherwise disposed of in a manner acceptable to the Commissioner; or in the case of a live animal, it has been treated in a manner acceptable to the Commissioner to reduce the level of any biological residue to a level acceptable to the Commissioner. The burden of proof under this section shall be on the owner or custodian of such animal, animal feed or animal product. (1971, c. 1183, s. 2.)