TRANSMITTING ABILITY OF HOLSTEIN-FRIESIAN SIRES 
11 
Table 3. — Summary of sires having six or more yearly-record daughters whose 
dams have yearly records, in order of relative increase in pounds of buiterfat, by 
daughters over dams 
Increase (+) or decrease (— ) of daughters over dams. 
Sire 
Milk 
Butterfat test 
Butterfat 
Pounds 
Per cent 
Amount 
Per cent 
Pounds 
Per cent 
A 
+5, 110. 9 
+4, 135. 3 
+3, 404. 4 
+3, 770. 4 
+3, 423. 
+2, 901. 3 
+1, 071. 4 
+2, 915. 7 
+3, 660. 7 
+1, 122. 7 
+1,062.7 
+2, 327. 6 
+809. 4 
+1, 915. 4 
+892, 9 
-744.1 
+364. 3 
+184. 2 
-1,108.7 
-269. 4 
-619. 3 
-2,109.8 
-1, 025. 5 
+35.3 
+24,1 
+18.2 
+21.4 
+17.1 
+15.4 
+5.6 
+17.2 
+23.7 
+5.9 
+6.5 
+14.6 
+5.8 
+12.8 
+6.0 
-4.6 
+2.1 
+1.3 
-7.3 
-1.4 
-4.2 
-12.0 
-5.4 
+0.13 
+0.11 
+0.09 
+0.03 
+0.03 
+0.04 
+0.29 
-0.02 
-0.19 
+0.19 
+0.22 
-0.-21 
+0.01 
-0.35 
-0.12 
+0.19 
-0.09 
-0. 11 
+0.05 
-0.23 
-0.26 
+0.05 
-0.19 
+4.02 
+3.24 
+2.59 
+0.94 
+0.91 
+1.16 
+7.92 
-0.60 
-5.43 
+5.46 
+6.57 
-5.80 
+0.28 
-8.84 
-3.27 
+5.90 
-2.63 
-3.48 
+1.41 
-6.30 
-7.47 
+1.54 
-5.18 
+191. 
+163.8 
+138. 7 
+126.3 
+120. 4 
+109.0 
+98.7 
+92.4 
+91.0 
+76.6 
+73.9 
+44.8 
+30.6 
+17.5 
+13.2 
+6.4 
-3.9 
-10.4 
-32.2 
-51.3 
-58.2 
-60. 5 
-72.3 
+40.9 
B 
+28. 2 
0— 
+21.4 
D 
+22.4 
E 
+18.1 
F -. 
+16.7 
G___ _ 
+14.2 
H 
+16.3 
I _• 
+16.8 
J 
+11.6 
K 
+13.5 
L . 
+7.7 
IvI 
+6.2 
N . -.- 
+2.9 

+2.4 
P___ 
+1.2 
Q 
-0.7 
P. . 
—2.3 
s 
—6.0 
T___ 
—7.5 
U 
V . 
-11.4 
—10.6 
w 
-10.4 
METHOD OF INHERITANCE 
A study of the records of the daughters and their dams in Table 
2 shows a remarkable variation. Note the following instances: 
The highest-record daughter of sire A is out of the dam that has 
the lowest record of the five. His lowest-record daughter is out of the 
dam with the next lowest record. The one daughter which failed 
to make a larger record than her dam was from the dam with the 
highest butterfat record, and yet this daughter's record is 6,491 
pounds of milk and 215 pounds of butterfat lower than his highest- 
record daughter. 
Sire B's highest-record daughter is out of a dam with the third 
from the lowest record, and his daughter with the next to lowest 
record is from the fourth highest dam. There are two full sisters in 
his list of daughters. One is second in the list of 13 daughters, the 
other is ninth, the latter with 3,301 pounds of milk and 184 pounds 
of butterfat less than her sister. 
Sire C has 12 daughters whose dams have yearly records. The 
highest-record dam, which produced 892 pounds of butterfat, has a 
daughter with the third highest record, or 891 pounds of butterfat; 
whereas the lowest-record dam, with 404 pounds of butterfat, has a 
daughter with the fourth highest record, or 862 pounds of butterfat. 
His highest-record daughter produced 917 pounds of butterfat and her 
dam 730 pounds. The next highest daughter, which produced 893 
pounds of butterfat, is from a dam with 574 pounds. 
The lowest-record dam in the list of sire D produced 388 pounds of 
butterfat; her daughter, sire D's lowest-producing daughter, has a 
record of 507 pounds of butterfat, an increase of 119 pounds. Sire 
D's highest-producing daughter produced 844 pounds of butterfat 
and her dam produced 572 pounds, an increase by the daughter of 
