CLEAN MILK 155 



Stock their health, grouping, housing, feeding, management, 



and care 



The herd shall include no animal that is known to be dis- 

 eased or that shows evidence of acute, chronic, local, or other 

 disease. 



No cow shall be added to a herd which has not successfully 

 passed a tuberculin test within the preceding three months. 



All cows in the stable where certified milk is produced must be 

 tuberculin-tested at least twice each year as long as reactions are 

 present, and once a year thereafter. The tests shall be made 

 by a registered or licensed medical or veterinary practitioner 

 approved by the milk commission, and those that react 2 F. or 

 more must be removed from the herd at once. 



All foodstuffs shall be kept in an apartment separate from the 

 cows and used only after milking, and shall not be brought into 

 the stable except just before fed. 



Only those feeds shall be used which consist of fresh, palatable, 

 or nutritious materials, such as will not injure the health of the 

 cows or unfavorably affect the taste or character of the milk. 



A well-balanced ration shall be used, and all changes of feed 

 should be made slowly. The first feedings of grass, alfalfa, en- 

 silage, green corn, or other green feeds must be given in small 

 rations and increased gradually to full ration. 



Long hair on the udder and surrounding parts shall be clipped. 

 This does not apply to the bush of the tail. The tail must not 

 touch the floor during milking. 



Preparation of the cow for milking 



The cow shall be cleaned, milked, and fed regularly and always 

 treated kindly. 



All sweeping of dry floors, walls, or ceiling must be completed 

 before grooming of cows is begun. Dry sweeping and brushing 

 should be discouraged. 



At least half an hour before milking the cows shall be thor- 

 oughly groomed and cleaned and compelled to remain standing 

 until milked. 



Before each milking the udder and surrounding parts shall 

 be thoroughly washed with clean water and clean cloths and 



