RELATION OF PRODUCTION TO INCOME FROM COWS. 9 



Table 3. — Relation of butterfat production to cost of feed when the product was 



sold as butterfat. 





Number 

 of cows. 



Average 

 butterfat 

 produc- 

 tion. 



Average cost of feed. 



Group No. 



Rough- 

 age. 



GraiD. 



Total. 



1 



4 



43 



600 



2,305 



4,310 



4,748 



3,385 



1,635 



652 



214 



79 



27 



8 



3 



1 



Pounds. 

 23 

 58 

 109 

 154 

 202 

 251 

 298 

 347 

 396 

 446 

 493 

 543 

 600 

 642 

 708 



$29. 36 

 30.85 

 28.08 

 29.61 

 31.54 

 33.44 

 34.26 

 35.27 

 34.70 

 37.27 

 39.12 

 36.30 

 40.23 

 41.41 

 45.08 



$10. 62 

 7.12 

 7.62 

 10.94 

 15.73 

 20.34 

 25.02 

 28.91 

 34.65 

 38.88 

 38.52 

 45.69 

 50.55 

 82.72 

 51.87 



$39 98 



2 



37 97 



3 



35 70 



4 



40.55 



5 



47.27 



6 



53.78 



7 



59.28 



8 



64.18 



9 



69.35 



10 



76.15 



11 



77.64 



12 



81.99 



13 



90.78 



14 



124. 13 



15 



96.95 







Total 



18,014 













248 



32.75 



20.12 



52.87 









These figures show only a moderate rise in cost of roughage as 

 butterfat production increases, but they show a very rapid rise in cost 

 of grain. The comparatively small difference in the cost of roughage 

 per cow for the different groups may have been due partly to the feed- 

 ing of the same quantity of roughage to all cows in the same herd, 

 regardless of production. The increased cost of grain, however, 

 was very regular as production increased. This was always true when 

 the number of records in the group was great enough to furnish a fair 

 a rerage. Evidently many of the members of cow-testing associations 



Table 4. — Relation of butterfat production to returns for $1 expended for 

 feed and to feed cost per pound of butterfat where the product was sold as 

 butterfat. 



Group No. 



Number 

 of cows. 



Average 

 butterfat 

 produc- 

 tion. 



Average 

 returns 

 for $1 ex- 

 pended 

 for feed. 



Average 

 feed cost 



per 

 pound of 



butterfat 



1 



4 



43 

 600 

 2, 305 

 4,310 

 4, 748 

 3,388 

 L 835 

 662 



214 



79 

 27 



8 

 8 

 1 



Pounds. 

 23 

 58 

 L09 

 154 

 202 

 251 

 298 

 347 

 396 

 1 16 

 493 

 548 

 600 

 6 12 

 70s 



$0.22 

 .63 

 1.35 

 1.69 

 1.90 

 2. 08 

 2. 24 

 2. 10 

 2. 52 

 2. 64 



2.71 

 2.64 



2, , i 



2.21 

 2. 12 



$1,758 



2 



. 648 



3 



. 323 



4 



. 264 



5 



. 238 



8 



.214 



7 



. L99 







. IS, 



9. . 



. 17.'. 



10 



. 171 



11 





\i 



. 151 



1 ; 



. 151 



II 



. 193 



1 



. 137 









18,014 











24* 













22 2 



