PRODUCTION OF MILK OF LOW BACTERIAL CONTENT. 



19 



work, showing the per cent of the various groups found in the regu- 

 lar milk and the corresponding samples of middle milk directly from 

 the udder, are shown in Table 5. It is interesting to note that the 

 average per cent of the bacterial groups in the milk checks very 

 closely with the average of those in the milk taken directly from the 

 udder. Taking the bacterial groups and counts into consideration, 

 it seems evident that milk produced under the conditions of the 

 experiment was of a high quality from a bacteriological standpoint 

 and was very similar to that taken directly from the udder of the 

 cow. The results of the experiment agree closely with those ob- 

 tained by North (2), who found it possible to produce low-count 

 milk by the use of small-top, sterilized pails in an old barn. 



Table 5. — A comparison of the bacterial groups found in clean milk of loic 

 bacterial count and in milk directly from the udder. 



BACTERIAL GROUPS IN MILK SAMPLES. 



Date. 



Sample 

 No. 



Acid 

 coagu- 

 lating. 



Inert. 



Alkali. 



Pepton- 

 izing. 



Acid 

 coagu- 

 lating 

 (pepton- 

 izing). 



Feb. 29. 

 Feb. 29. 

 Mar. 1 . . 

 Mar. 1 . . 

 Mar. 3 . . 

 Mar. 17. 

 Mar. 24. 

 Mar. 24. 



Average . 



Per cent. 

 44.45 





 47.62 







69.40 

 63.06 



7.00 

 75.30 



Percent. 

 12.96 

 57. 14 



4.76 

 17.56 

 10.39 



5.09 

 85.00 

 10.24 



Per cent. 

 25.92 

 37.14 

 14.29 

 75.68 

 14.75 

 17.19 

 3.00 

 11.44 



Per cent. 

 

 

 

 

 



.64 

 2.00 

 3.02 



Per cent. 

 



5.72 

 



6.76 

 



11.48 

 3.00 

 



Per cent. 

 16.67 





 33.33 







5.46 



2.54 











38. 36 



25.39 



24.93 



.04 



3.37 



7.25 



BACTERIAL GROUPS IN MILK DIRECTLY FROM THE UDDER. 



Date. 



Cow 

 No. 



Acid 

 coagu- 

 lating. 



Acid. 



Inert. 



Alkali. 



Pepton- 

 izing. 



Acid 

 coagu- 

 lating 

 (pepton- 

 izing). 



1916. 



Feb. 29 



Feb. 29 



Feb. 29 



Mar. 9 



Mar. 9 



Mar. 9 



2 

 23 

 26 



2 

 23 

 26 



2 

 23 

 26 

 23 

 26 



Per cent. 

 19.00 







82.86 

 28.04 



5.11 

 85.71 

 68.34 



2.94 

 77.09 



5.78 

 64.58 



Per cent. 

 39.00 

 97.81 



8.57 

 64.02 

 87.66 

 14.29 

 12.08 

 88.82 







72.83 

 16.67 



Per cent. 

 36.00 

 



8.57 

 3.27 

 3.83 

 



5.00 

 1.18 

 2.08 

 14.46 

 16.67 



Per cent. 

 1.00 

 

 

 

 

 

 

 

 



1.73 

 



Per cent. 

 5.00 

 2.19 

 



4.67 

 

 

 

 



2.08 

 1.73 

 2.08 



Per cent. 

 

 

 

 



3.40 

 



Mar. 16 



Mar. 16 



Mar. 16 



Mar. 24 



Mar. 24 



14. 58 

 7.06 



18.75 

 3.47 

 





39.95 



45.61 



8. 28 - 25 



1.61 



4.29 



1- 









