MAINE AGRICULTURAL EXPERIMENT STATION. 



TABLE 4. 

 Herd B. October i, 1915. 









When did 







EfBciency 







Is the cow 



she calve 



What is 



Month of 



percentage 



Cow 



(or Heifer) No. 



milking 



(freshen) 



her age? 



lactation. 



(from 







now or dry? 



last? 



(approximate). 





Table 2). 





1 

 2 

 3 



' 'Milking ' 



Heifer 

 Heifer 

 September, '15 



2 

 2 

 3 















i 



89 





4 



Milking 



September, '15 



2 



1 



73 





5 



Milking 



November, '14 



3 



11 



36 





6 



Dry 



August '14 



3 











7 



Dry 



July, '14 



3 











8 



Milking 



December, '14 



4 



10 



38 





9 



Milking 



April, '14 



6 



18 



37 





10 



Milking 



September, '15 



2 



1 



73 





11 



Milking 



September, '15 



3 



1 



89 





12 



Milking 



September, '15 



3 



1 



89 





13 



Milking 



February, '15 



6 



8 



53 





14 



Milking 



April, '15 



8 



6 



63 





15 



Milking 



May, '15 



8 



5 



70 





16 



Milking 



March, '15 



12 



7 



53 





17 



Milking 



April, '15 



12 



6 



57 





18 



Dry 



Dry 





6 











19 



October, '14 



3 











20 



Milking 



September, '15 



2 



1 



73 



Total cows and heifers in herd ^ 20. Total cows dry = 4. 

 Total cows milking = 14. Total heifers not yet freshened = 2. 

 Total cows which have borne calves =1 18. 

 Average Efficiency Percentage 



of all cows which have 



borne calves ^= 



89+73+36+0+0+38+37+73+89+89+53+63+70+53+57+0+0+73 



893 



49.61 < 



Average Efficiency Percentage 



for all cows now milking 



80^ 



- = 63.79%- 



14 



Total lbs. milk produced October 6, 1915 ^ 290. 



Average per cow which has borne a calf = 



Average per cow now milking 



290 

 14 



290 



20.7 lbs. 

 29000 



Calculated total milk if herd were operating 



at 100 per cent efficiency (on the basis of 



all cows which have borne calves) 49-6l 



16.1 lbs. 



584.6 lbs. 



