RELATION OF PRODUCTION TO INCOME FROM COWS. 5 



QUALITY OF COW-TESTING-ASSOCIATION COWS. 



The estimated production per cow of all the dairy cows in the 

 United States is approximately 4,000 pounds of milk and 160 pounds 

 of butterfat a year. The records of association cows show them to 

 be approximately 50 per cent above average in both milk and butter- 

 fat production, because the average production of those whose yearly 

 records have been tabulated was 6,077 pounds of milk and 248 

 pounds of butterfat. * | 



The greater yield of cows owned by association members is due 

 to various causes, but is due chiefly to better feeding, breeding, and 

 care. 



RELATION OF BUTTERFAT PRODUCTION TO INCOME. 



For Table 2 the records were sorted and grouped according to pro- 

 duction of butterfat, each successive group center being 50 pounds 

 above the one before it. 



Table 2. — Relation of butterfat production to income over cost of feed when the 

 product teas sold as butterfat ; years 1910 to 1920, inclusive. 



Group No. 



Number 



of 



cows. 



Butter- 

 fat 

 range. 



Produc- 

 tion 

 average. 



Average 

 price 



of 

 butter- 

 fat. 



Average 

 income 



over 

 cost of 



feed. 



1 



4 



43 



600 



2, 305 



4, 310 



4,748 



3, 385 



1, 635 



652 



214 



79 



27 



8 



3 



1 



Pounds. 

 0-25 

 26-75 

 76-125 

 126-175 

 176-225 

 226-275 

 276-325 

 326-375 

 376-425 

 426-475 

 476-525 

 526-575 

 576-625 

 626-675 

 676-725 



Pounds. 

 23 

 58 

 109 

 154 

 202 

 251 

 298 

 347 

 396 

 446 

 493 

 543 

 600 

 642 

 708 



$0.38 

 .41 

 .44 

 .44 

 .44 

 .44 

 .44 

 .44 

 .44 

 .45 

 .43 

 .40 

 .41 

 .43 

 .29 



i $31. 35 



2 



113.88 



3 



12. 48 



4 



27.90 



5 



42.45 







57.82 



7 



73. 34 



h :. 



89.67 



9 



105. 07 



10 



124. 85 



11 



135. 30 



12 



134.80 



13 



157. 87 



14 



1.50.62 



15 



IDS. 1H 









18,014 

















248 



.44 



57. ( t 













The income from these 18,014 cows was obtained from the sale 

 of butterfat. Aj the price received per pound varied little in the 

 larger groups, the variation in income over cost of feed for those 

 groups could n.it have been due to a difference in price of product. 

 Evidently it was due to a difference in average production per e<>\v. 

 and this difference in production was 'hie partly to 'he cows and 



partly to the w;iv the cow-: \vcic U'i\ ;md c;ire(| for. 



Tic group whose average yearly butterfat production was 164 

 pounds, or ;i little below thai of the average dairy cow, had an aver 

 age income of $27.90 over cos! of feed, while the group whose average 



