(a) provide a minimum cubical air space of approximately three-quarters cubic foot for each chick;

(b) have adequate equipment to provide a complete change of air at least five times per hour in a manner that will ensure freedom from drafts;

(c) have floors, walls and ceilings made of washable materials having a hard finish;

(d) have adequate lighting;

(e) have a satisfactory means to control flies, rodents and other vermin;

(f) are kept in a clean and sanitary condition; and

(g) are thoroughly cleaned after the sale of each lot of chicks is completed.