Allen: Effect of Parents' Age on Quality of Dairy Cows 175 



A SIRE OF RECORD-MAKING DAUGHTERS 



FIGURE 16. King Hengeveld Aaggie Fayne (56635) has shown remarkable ability to transmit 

 production. He was slaughtered when only three years of age and as a result has only 31 A. R. O. 

 daughters. Eleven of these daughters have records in excess of 30 pounds of butter (80% fat) 

 in 7 days. Four of his daughters have yearly records. Three of these records made by two and 

 three year old heifers average 2 1,762 . 2 pounds of milk and 978 . 93 pounds of butterfat. The other 

 yearly record was made by a mature daughter and is 15,486.1 pounds of milk and 530.89 pounds 

 of butterfat. 



King Hengeveld Aaggie Fayne was born when his parents were quite young. His sire was 

 22 months of age and his dam 28 months of age when he was born. Photo by the Holstein-Fresian 

 World. 



purposes. An unusually large percent- 

 age of the Superior Class were born 

 before their dams were two and one- 

 half years of age and must have been 

 first calves. The sires of a large per- 

 centage of the Superior Class were also 

 under two and one-half years when the 

 dams were bred. On the other hand, 

 just as large a percentage of the 

 Superior Class as of the Inferior Class 

 is from very old parents. 



AGE WHEN THE BEST RECORDS ARE 

 MADE 



Table IV was arranged for the Supe- 

 rior Class only. The best record was 

 used in every case. If any of the cows 

 herein considered have made a better 

 record since the collection of this 

 data this fact introduces an error. 

 It is recognized that only a very few 

 cows have ever made more than one 



TABLE IV. The Average Age of All the Superior Cows at the Time Their 

 Records Were Made 



