14 
BULLETIN 858, U. S. DEPARTMENT OF AGRICULTURE. 
.-it. 80 
AfEPAGS PPO0VCr/OA/ PPPCOW f POL/A/PS J 
I * a* $ $ 
Q & 
*? V 
§ I * S £ § 
V) ^ <Vi ^S K 'J? 
<*y *y < rr «y «vr <*p 
/JO 
A60 
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1.30 
120 
/JO 
WO 
.90 
.80 
.70 
.60 
.SO 
.40 
.30 
.ZO 
JO 
SUMMER / 9/ 5-/6 
f/6 HERDS ) 
__ 
//4 IIS 102 103 110 109 108 116 118 III I06 113 /07 /IS 1/2 104 
HERD NUMBER 
/ 03/4.8/3.2 223 //.3 /8.7 28.7 7.7 38.2 /7.8 24 J /62 /S.8 3€£ 27.2 28.3 
AVERAGE NUMBER OF COWS /N HERD 
41/EPAGE PRODUCT/ON PEP COW fPOU/VDS) 
4 220 
2.10 
2.00 
1.90 
*/.«? 
<Z/.SO 
%/30 
%MO 
<z/.oo 
$.90 
«3 .80 
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^ N S S3 ?> 
C*)-- Ply Orj» ^J* ^J" 1 
tit ^ S 
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«Vj-> fty «>0" V 
- 
o UMMtzH /&/0 "// 
( £t r/izrxiso j 
• 
128 /I4 IIS 117 122 116 123 /09 124 //3 127 III 126 f06 103 //0 107 /OS 12/ 119 I2S 
HERD NUMBER 
24J 9.S IS./ 18.8 13.5 9.3 16.7 19.0 2S.0 152 16.2 16.3 27.2 27.7 203 ZO.7 18.8 29.7 I7.S 29.1 22.7 
AVERAGE NUMBER OF COWS IN HERD 
Fig. 4.— Average production per cow and cost of producing 100 pounds of milk in summer. 
