﻿MEDICAL MILK COMMISSIONS AND CERTIFIED MILK. 29 



4K. A second tuberculin test shall follow each primary test after an interval 

 of six months, and shall be applied in accordance with the rules and regulations 

 mentioned. Thereafter, tuberculin tests shall be reapplied annually, but it is 

 recommended that the retests be applied semiannually. 



49. Identification of cows. — Each dairy cow in each of the certified herds 

 shall be labeled or tagged with a number or mark which will permanently 

 identify her. 



50. Herd-book record. — Each cow in the herd shall be registered in a herd 

 book, which register shall be accurately kept so that her entrance and de- 

 parture from the herd and her tuberculin testing can be identified. 



51. A copy of this herd-book record shall be kept in the hands of the veteri- 

 narian of the medical milk commission under which the dairy farm is operating, 

 and the veterinarian shall be made responsible for the accuracy of this record. 



52. Dates of tuberculin tests. — The dates of the annual tuberculin tests shall 

 be definitely arranged by the medical milk commission, and all of the results 

 of such tests shall be recorded by the veterinarian and regularly reported to the 

 secretary of the medical milk commission issuing the certificate. 



53. The results of all tuberculin tests shall be kept on file by each medical 

 milk commission, and a copy of all such tests shall be made available to the 

 American Association of Medical Milk Commissions for statistical purposes. 



54. The proper designated officers of the American Association of Medical 

 Milk Commissions should receive copies of reports of all of the annual, semi- 

 annual, and other official tuberculin tests which are made and keep copies of 

 the same on file and compile them annually for the use of the association. 



55. Disposition of cows sick with diseases other than tuberculosis. — Cows 

 having rheumatism, leucorrhea, inflammation of the uterus, severe diarrhea, or 

 disease of the udder, or cows that from any other cause may be a menace to 

 the herd shall be removed from the herd and placed in a building separate from 

 that which may be used for the isolation of cows with tuberculosis, unless such 

 building has been properly disinfected since it was last used for this purpose. 

 The milk from such cows shall not be used nor shall the cows be restored to the 

 herd until permission has been given by the veterinary inspector after a careful 

 physical examination. 



56. Notification of veterinary inspector. — In the event of the occurrence of 

 any of the diseases just described between the visits of the veterinary inspector, 

 or if at any time a number of cows become sick at one time in such a way as to 

 suggest the outbreak of a contagious disease or poisoning, it shall be the duty of 

 the dairyman to withdraw such sickened cattle from the herd, to»destroy their 

 milk, and to notify the veterinary inspector by telegraph or telephone imme- 

 diately. 



57. Emaciated coics. — Cows that are emaciated from chronic diseases or from 

 any cause that in the opinion of the veterinary inspector may endanger the 

 quality of the milk, shall be removed from the herd. 



BACTERIOLOGICAL STANDARDS. 



58. Bacterial counts. — Certified milk shall contain less than 10,000 bacteria 

 per cubic centimeter when delivered. In case a count exceeding 10,000 bacteria 

 per cubic centimeter is found, daily counts shall be made, and if normal counts 

 are not restored within 10 days the certificate shall be suspended. 



59. Bacterial counts shall be made at least once a week. 



60. Collection of samples. — The samples to be examined shall be obtained 

 from milk as offered for sale and shall be taken by a representative of the milk 

 commission. The samples shall be received in the original packages, in prop- 



