62 



FIRST LESSONS IN DAIRYING 



to a temperature below 50 to retard the growth of 

 those bacteria which gain access in spite of the pre- 

 cautions taken. The whole story briefly is: keep 

 the milk clean and cold. 



Preventing infection. The cows should be ad- 

 mitted to the milking stable long enough before 

 milking to permit the dust to settle which has been 



THE RELATIVE NUMBER OF BACTERIA IN THE AIR OF WELL AND 



POORLY KEPT STABLES. ILLINOIS EXPERIMENT STATION 



BULLETIN 



stirred up by their entering. Hay or bedding 

 should not be handled immediately before or during 

 milking. The udder, flanks, and adjacent parts of 

 the body should be brushed and, better, wiped with 

 a damp cloth or sponge. The clothes of the milker 

 should be free from dust and the milking done with 

 dry hands. Haecker has shown that the dampen- 

 ing of the hair on and near the udder with clean 

 water is as efficient in reducing the number of bac- 

 teria in the milk as the use of water with a dis- 

 infectant in it or the use of vaseline. 



