(a) Chicks shall originate in parent flocks meeting the requirements of section 57.10 of this Part.

(b) Prior to the placement of new chicks in a house, it is recommended that the house be cleaned and disinfected.

(c) Cage paper and litter shall be sampled and tested as provided in section 57.8(b) of this Part when the chicks are between five and fifteen days of age.

(d) Manure shall be sampled and tested as provided in section 57.8(b) of this Part when the chicks are between 10 and 15 weeks of age.

(e) Incoming chicks and outgoing pullets shall be transported only in cleaned and disinfected crates and vehicles.

(f) Routine diagnostic specimens shall be tested as provided in section 57.9(b)(1) of this Part.

(g) Flocks containing less than 3,000 birds shall be exempt from the sampling and testing required by this section.