BREEDING DAIRY CATTLE 



229 



illustrate the variation in the quantity, we may compare 

 average production of all cows in the United States with two 

 of the high-producing ones. It should be borne in mind that 

 this is not a , comparison of the poorest and the best, as we 

 have no record of the poorest cows : — 



Average yearly production per cow in the United States 



Production in one month 



From the table we note that the monthly record of our high- 

 producing cows is approximately equal to the average yearly 

 record of all cows in the United States. Colantha 4th's Johanna 

 yielded 27,432 pounds of milk in one year, or approximately 

 eight times that of the average cow. 



MILK-RECOEDS 



Record of performance among dairy cattle constitutes the 

 only method of determining their value. Without such records, 

 we would not be able to choose the very high- or the very low- 

 producing, or the profitable from the unprofitable animals. At 



