138 INVESTIGATION IN MILK PRODUCTION. 
In the record of Bess data are presented covering a peri- 
od from the beginning of the 237th to the close of the 248th 
week of lactation. It is not expected that ina cow, farrow 
so long, the lacteal functions would be very active, or that 
on full feed she would makenormal return indairy products. 
At the beginning of the record presented, she weighed 1050 
pounds and at the close 1130, being a daily gain of 1.04. 
Her daily yield of butter fat was .701 of a pound and 2 
pounds of milk solids. She returned a pound of fat to 8.01 
pounds of nutriment and a pound of milk solids to 2.89 
pounds. She evidently received more nutriment than she 
needed for the work she was doing in the dairy and placed 
the surplus to her credit in gain in weight, though she made 
a slight gain in flow of milk, and yield of butter fat and milk 
solids. There was no attempt to feed her according to her 
yield, but she received full feed for the groupshe happened to 
be with during the winter of 1900-1, and the same data are 
used in different form in Bulletin 71. The ration was small 
in bulk and strong in nutriment when she was so fed that 
she was satisfied with the bulk; by the end of the week she 
would show signs of going off her feed because there was too 
much nutriment; when it was decreased in quantity by the 
end of the week she wanted more because it lacked in bulk, 
though the nutriment was ample. This made her receive a 
light ration one week and a heavier one the next, as is shown 
by the latter part of the table. Bess dropped her calf when 
she was two years old and this was in the fifth year of lac- 
tation. 
TABLE LIX.—Giving Stage of Lactation, Loss or Gain in Weight, Yield of Butter 
Fat and Total Solids and Net Nutriment to 1 lb. of Butter 
Fat and 1 lb. of Milk Solids. 










CRIME Daily A NET 
= Gain AILY YIELD | NUTRIMENT 
| OF LACTATION ao || FG) 3 IE. 
| Loss | 
| From To Neen Butter; Total | Butter) Total 
| Week Week | Weig’ t Fat | Solids} Fat |Solids 
i. | Lbs. | bss |S bse me bssn mess 
AAS Goren cocsureeevesioocetenccs 1st 1tth |—2 | 1.591 | 4.494 | 3.79 1.34 
Prides sees. mat aa cisretcleoeaiceien | Ist Tal th arene) | 11.368 | 4.071] 4.10 1.39 
OUrOmat oo noncicscescceeemees 5th LSth || — 30) ASV35) ooo oes 1.98 
DOrelth ce: a pense | 9th 23rd |+ .10/ 1.265 | 3.371 | 5.85 | 2.19 
| | 
ATOM GUKe iors cece see ceteetene | 29th 42nd lies .30/1.129 | 3.094.| 6.12 2.23 
DCheSsi.2 os. caeee te 58th 7ist |— .05|-.800| 2.073! 635 | 2.45 
MJCECONMA, sc. ccurs avosousssewsene cs 119th 132nd 00} .5S84) 1.467 | 6:27 2.47 
| | 
1StOR Satara ou catbonesscnecrseccae | eachescaelal 248th i+1.04 THO | ZOO ON PF SsOnk 7S) 
| } % 





