
INFLUENCE OF STAGE OF LACTATION. 133 
ginning of the 9th week to the close of the 23rd week. By 
taking the average weight of the first four weeks of the rec- 
ord and the last four, we find that she weighed 10 pounds 
more two weeks before the record closed than she did two 
weeks after it began, being a daily average gain in weight of 
.10 of a pound; that she required only 5.23 pounds of nutri- 
ients to a pound of butter fat the 9th week, and the 18th, 
when an equilibrium had been obtained between the food 
consumed and products yielded, she required 6.34 pounds 
and for milk solids 2.41 pounds. From the 18th to the end 
of the 23rd she required on the average more than the nor- 
mal amount, because some was diverted to gain in weight, 
though the excess was very slight. It will be observed that 
there was a decrease in the nutrients in the rations fed dur- 
ing 6 weeks of the experiment, this is the case with all the 
cows in the herd and was an unfortunate occurrence for the 
character of the work in hand. It was caused by introduc- 
ing beet pulp in the ration and resulted in a depression in 
both yield of milk, per cent fat content, and per cent of total 
milk solids. 
TABLE LV.—Giving Record of Klondike from the 29th-42nd Week of Lactation. 



























NUTRIENTS DaILy PRopucT YIELDED Ree ee 
Week Weight aoe 
tein | C-H. | Fat | aeitk | "Ba¢| Sotids| Fat |Solids 
29th 952 1.330 | 11.56 55 22°37 | 1138 (32080) 52251) JLo 
30th 975 1.429] 12.62] .60 22.88 | 1.144 | 3.123 | 6.16 2.26 
31st 972 1.429 | 12.62 60 | 22.08] 1.100 | 3.009| 6.43 | 2.35 
32nd 967 . | 1.330) 11.56 J5%9) 23.58'| 1.173 | 3-183) 5:03 1.85 
33rd 952 \ 1.362 | 11.92 -59 22.41 | 1.177 | 3.142) 5.45 2.04 
34th 942 1.426 | 12.27 55 QA S) | ALA |S 8G), Gag 2.16 
35th 940 1.426 | 12.27 -55 23.00 | 1.084 | 2.972 | 6.38 2.33 
36th 945 1.426 | 12.27 “05 21.33 | 1.060 | 2.860 | 6.49 2.40 
37th 940 1.432 | 12.70 56 22.71 | 1.086 | 3.070) 6.78 2.40 
38th 937 1.432 | 12.70 56 23.24] 1.161 | 3.188 | 6.34 2.32 
39th 947 1.432 | 12.70 56 | 22.88 | 1.176 | 3.128] 6.21 2.33 
40th 947 1.420 | 12.56 56 22.23 | 1.094 | 3.039 | 6.53 2235 
41st 950 1.420 | 12.56 56 23.14 | 1.144 | 3.112] 6.23 2.29 
42nd 94.2 1.432 | 12.70 56 | 23.48 | 1.153 | 3.221) 6.37 | 2.28 
Ave 951 1.409 | 12.36 06 22.49 | 1.129 | 3.094} 6.12 2.23 


