MAINE AGRICULTURAL EXPERIMENT STATION. 



TABLE 3. 



Herd A. October 6, 19 15. 









When did 







Efficiency 







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 



Milking 



January '15 



6 



9 



46 





2 



Milking 



December, '14 



4 



10 



38 





3 



Milking 



September, '15 



11 



1 



88 





4 



Milking 



March, '15 



7 



7 



58 





5 



Milking 



April, '15 



7 



7 



58 





6 



Milking 



January, '15 



9 



9 



43 





7 



Milking 



January '15 



2 



9 



30 





8 



Milking 



December, '14 



2 



10 



27 





9 



Milking 



February, '15 



2 



8 



34 





10 



Milking 



December, '14 



2 



10 



27 





11 



Dry 





6 











12 



Dry 



October, '14 



5 











13 



Dry 



April, '14 



8 











14 

 15 

 16 

 17 



18 

 19 



Milking 



Heifer 

 Heiter 

 He.fer 

 Heifer 

 Heifer 

 September, '15 



1 

 3 

































1 



S9 



Total cows and heifers in herd = 19. Total cows dry = 3. 

 Total cows milking == 11. Total heifers not yet freshened = 5. 

 Total cows which have borne calves = 14. 

 Average Efificiency Percentage 



for all cows which have 



borne calves= 

 46+38+88+58+58+43+30+27+34+27+0+0+0- f 89 538 

 = = 38.43% 



14 



Average Efficiency Percentage 

 for all cows now milking 



14 



538 



= 49.00%. 



Total lbs. milk production October 6, 191 5 = 260. 



260 

 Average per cow which has borne a calf = . = 18.57 lbs. 



Average per cow now milking ^ 



260 



14 



= 23.64. 



Calculated total milk if herd were operating ofinnn 



at 100 per cent, efficiency (on the basis of -^ 676.6 lbs. 



all cows capable of milking) 



Calculated total milk (on the basis of 



all cows now milking) 

 Average per cow = 48.2 lbs. 



38.43 



26000 

 49.00 



= 530.6 lbs. 



