Wisconsin Administrative Code › Department of Agriculture, Trade and Consumer Protection › ATCP 55-89 - Food, Lodging, and Recreation Safety › Chapter ATCP 65 - Milk And Milk Products › Subchapter V - Safety and Quality Standards › Section ATCP 65.72 - Drug residue testing

Current through June 24, 2024
(1) MONTHLY TESTING OF PRODUCER MILK
				  SHIPMENTS. During every month in which a dairy plant or milk contractor
				  licensed as a dairy plant receives milk from a milk producer, the dairy plant
				  operator shall perform a drug residue test on a milk sample obtained from that
				  producer under s.
				  ATCP
				  82.12. The drug residue test shall be sensitive, at a
				  minimum, to beta lactam drug residues.
(2) NEW MILK PRODUCER; INITIAL TESTING. A
				  dairy plant operator or milk contractor licensed as a dairy plant shall perform
				  a drug residue test on a milk sample collected from the first milk shipment
				  received from a milk producer. The drug residue test shall be sensitive, at a
				  minimum, to beta lactam drug residues and any other drug residues for which
				  testing is required under sub. (3) (b) If the sample tests positive for any
				  drug residue, the dairy plant operator shall report the result to the division
				  and the producer within the time prescribed in sub. (9).
(3) TESTING BULK LOADS.
(a)
Beta lactam drug residues;
				  routine bulk load testing.
Every dairy plant operator shall perform a
				  drug residue test on every bulk load of raw milk offered for sale upon delivery
				  at that dairy plant. The drug residue test shall be approved by the division
				  and detect, at a minimum, beta lactam drug residues.
(b)
Other drug residues; random bulk
				  load testing.
1. In addition to
				  performing routine beta lactam tests under par. (a), the operator of a dairy
				  plant shall randomly test bulk milk deliveries received at that dairy plant for
				  other drug residues whenever random testing is required by the division under
				  subd. 2. The random testing program shall be designed so that, during any
				  consecutive 6-month period, a milk shipment from each producer is included in
				  at least 4 separate bulk load tests in each of 4 separate months.
2. The division may issue a periodic written
				  notice to dairy plant operators, requiring dairy plant operators to perform
				  random tests under subd. 1. for drug residues specified in the division's
				  notice. The division shall issue the same notice to every dairy plant licensed
				  by the department. The notice shall specify the effective date of the random
				  testing requirements and the period of time during which the random testing
				  requirements remain in effect.
3. A
				  dairy plant operator may test a bulk milk delivery to detect residues of one or
				  more drugs for which the division has not required testing under subd. 2. The
				  dairy plant shall follow the procedures in pars. (c), (d), and (e).
(c)
Bulk load testing
				  procedure.
Whenever a dairy plant operator performs a drug residue
				  test on a bulk load of milk under par. (a) or (b), the operator shall perform
				  the test on a sample taken from the bulk milk tanker. Sufficient agitation or a
				  milk sampling method approved by the division shall be used to ensure that the
				  sample is representative of the contents of the tanker. The test shall be
				  completed before the bulk load is commingled with any other producer's milk and
				  before any of the milk in the bulk load is processed. For testing purposes
				  under pars. (a) and (b), a milk shipment received in cans is considered a bulk
				  load.
(d)
Responsibility
				  for follow-up testing.
If a bulk load of milk yields a confirmed
				  positive test result for drug residue, and if the dairy plant receiving that
				  milk from producers is not the dairy plant to which those producers are
				  assigned for licensing purposes, under s.
				  ATCP
				  65.02, the operator of the receiving dairy plant shall
				  immediately notify the operator of the assigned dairy plant. The assigned dairy
				  plant is responsible for performing follow-up tests on producer samples under
				  sub. (4), and for rejecting producer shipments under sub. (5).
(e)
Testing with an unapproved
				  method.
If the dairy plant uses a testing method that is not approved
				  by the division and detects residues of one or more drugs for which the
				  division has not required testing, under par. (b), that result shall be treated
				  as a valid test result and reported to the division. The test result shall then
				  either be confirmed under sub. (4) using a drug residue detection method
				  approved by the division or the milk must be discarded under sub. (5). The
				  dairy plant may recover the milk value, under sub. (6), if the confirmatory
				  test result is obtained using a drug residue detection method approved by the
				  division.
(f) Testing of frozen
				  sheep milk for drug residues. A sheep milk producer intending to freeze the
				  sheep milk before shipment must either sample or test the sheep milk for drug
				  residues before bagging and freezing the sheep milk. The sample or test result
				  must remain with the bag or bags of frozen sheep milk to which the sample or
				  test result pertains. Each bag of frozen sheep milk shall be labeled to
				  indicate the grade of milk, the dairy plant receiving the milk, the sheep milk
				  producer, the total number of bags to which the sample or test result pertains,
				  and the date on which the bag was filled with sheep milk. Sheep milk samples
				  must be frozen within 24 hours of sampling, must be maintained at -15º C.
				  (5º F.) or colder (documentation of storage temperature maintained) and
				  must be tested with 60 days of sampling.