CHAPTER XXII 
FEEDING DAIRY CATTLE 
Feeding Standards for Dairy Cows.—In studying the best 
methods of feeding dairy cows, the leading standards should be 
kept well in mind. 
I. The Wolff-Lehmann Standards for Dairy Cows—1000 pounds live weight 
; Digestible 
Daily Total 
milk dry Carbo- N. R. 
yield matter Protein hydrates 
and fat * 
1.0 25 1.6 10.7 1:6.7 
16.5 27 2.0 11.9 1: 6.0 
22.0 29 2.5 14.1 1: 5.7 
27.6 32 3.3 14.8 1:4.5 
* Given separately by Wolff-Lehmann. 
II. The Armsby Standards for Dairy Cows 
Digestible Energy 
protein, values, 
pound therms 
For maintenance per 1000 pounds....... ee 5 6.0 
Per pound of average milk (13 per cent solids, 4 per 
Cent fat) sii s cond dadidan wn bwwasduierawe nae .05 3 
The dairy cow is kept primarily for producing milk, one of 
the most valuable human foods and the raw material for the manu- 
facture of butter, cheese, and other dairy products. Through 
selection, liberal feeding, and careful management, the cow has 
gradually been developed to her present wonderful capacity for 
dairy production. The average production of many dairy herds 
at the present time exceeds one pound of butter fat per head for 
each day in the year, or over 360 pounds for the year. Cows hold- 
ing production records for milk and butter fat have, however, 
exceeded this amount many times, producing, respectively, over 
thirty thousand pounds of milk and eleven hundred pounds of 
butter fat in a year. 
* Records of yearly production: Tilly Alcartra 123459, Holstein, 30,451 
pounds milk; Finderne Pride Johanna Rue 121083, Holstein, 1176.47 pounds 
butter fat. 
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