Animal Husbandry Investigations in 1919. 267 



nisia's Interested Prince 71698; The Plymouth Lad 89792; 

 and Chief Engineer 47148. 



Two hundred and twenty-five sires are included in the 

 sires which met the requirements of the daughter-dam per- 

 formance test for transmitting qualities of butter-fat percent- 

 age. Out of this number 101 sires raised the butter-fat per- 

 centage of their daughters' milk as compared with the butter- 

 fat percentage of the dams of these daughters. 



The leading sire in this butter-fat percentage performance 

 test was Clear Brook Chief 74685 raising his daughter on the 

 average 1.338 per cent of butter-fat. This sire had two daugh- 

 ter-dam pairs. The dams were both in the lowest group for 

 butter- fat percentage (class D) and this sire raised his daughter 

 from these dams to the highest group (class A). 



Among the sires with a fair number of daughter-dam pairs 

 which raised the butter- fat percentage to a marked degree 

 might be mentioned Irene's King Pogis 73182; Merry Maiden's 

 Grandson 71003; Pogis 75th of Hood Farm 94501; Jacob's 

 Emanon 84177; and Golden Fern's Son 78687. 



Hood Farm Pogis 9th leads in number of daughter-dam 

 pairs with 42. This bull raised the butter-fat percentage of 

 his daughter on the average of 0.243 per cent over the butter- 

 fat percentage of the dams of their daughters. 



The sires mentioned as superior in the milk transmitting 

 ability, Hood Farm Torono and Spermfield Owl, do not check 

 up so well in their ability to transmit high butter-fat percent- 

 age. Hood Farm Torono caused his daughter on the average 

 to be 0.225 per cent of butter-fat below what the dams of these 

 daughters produced. Spermfield Owl only raised his daughters 

 on the average 0.027 per cent of butter-fat over what the dams 

 of these daughters produced. 



There are 2*24 sires of known transmitting ability for net 

 butter-fat given. Of this number only 99 sires raise the butter- 

 fat production of their daughters over that of their dams. The 

 sires which raised the production of their daughters' butter- 

 fat most were Sans Aloi 81012, Signal's Successor 72758, and 

 Golden Glow Chief 61460. The sires which made the deepest 

 impression on the breed by raising the butter-fat of the largest 

 number of daughters over that of their dams was Hood Farm 

 Torono with 34 pairs and an average increase for each daugh- 



