160 CERTIFIED MILK. 



and maj' be rejected whenever the purity is suspected. Samples of 

 water for anah'sis shall be furnished as often as requested. 



Removai, of Waste From Stable. 



All waste shall be removed and the stable thoroughly cleaned 

 throughout at least once daily. When cows are kept in the stable con- 

 tinuousl}',' the manure shall be removed from the stalls at least twice 

 dail)'. 



Surroundings of Buildings. 



vSurroundings of all buildings shall be kept clean and in good order. 

 The accumulation of dirt, rubbish, manure, or decayed matter .shall not 

 be permitted. The stable yard shall be well drained. 



Stock. 



The herd shall include no animal that is known to be diseased or that 

 seems to show evidence of acute, chronic, local, or other disease, unless 

 permitted by the veterinarian. 



Test for tuberculosis. Tuberculin shall be used in examination for 

 tuberculosis whenever required by the rules governing veterinary 

 inspection. 



Additions to herd. Animals proposed to be added to the herd shall 

 be kept in a separate quarantine building, at least two hundred feet' 

 from the stable, and their milk shall not be used until approved by the 

 veterinarian, after a ph3'sical examination and tuberculin test. 



E.rclusion from herd. Any animal showing evidence of general ill- 

 health and any that is off-feed shall be- at once removed from the stable 

 and its milk withheld. 



So far as possible, the cows shall be grouped or milked in groups, so 

 that the milk collected in any short period shall show about the same 

 composition as the average for the herd. 



Housing. The cows shall be kept in comfortable and healthful quar- 

 ters and not unnecessarily exposed to inclement weather. 



Foods. All food stuffs 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 being fed. 



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

 nutritious materials, such as are known will not injure the health of the 

 cows or unfavorabh- affect the taste or character of the milk. 



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

 made slowly. » 



IVater. Cows shall be given fresh water at least twice daily. 



Calving — Exclusion from the herd. Cows shall be removed from the 

 stalile in which the herd is kept at least twenty-one days before due to 

 calve, and not returned until seven days after calving. 



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