14 



BULLETIN 858, U. S. DEPARTMENT OF AGRICULTURE. 



4 1.80 



AVERAGE PROD(/CT/OA/ PER COW fPOU/VDSJ 



tJj. ^Jj «v}> ctJ> By ^ S5. >- tv$« >£- <v>- c^- cvj- «^ cnj- (vj- 











SUMMER / 9/ 5-/6 

 f/6 HERDS ) 















































__ 































114 IIS 102 103 I/O 109 108 116 118 III 106 1/3 107 7/9 112 104 

 HERO NUMBER 



70314.6/32 223 U.3 18.7 28.7 7.7 38.2 17.8 243 76.2 75.8 36S 27.2 26.3 

 AVERAGE NUMBER OF COWS /N HERD 



AVERAGE PRODUCT/ON PER COIV {POUfVDS) 



42.20 



2.10 



2.00 



1.90 



±AffO 



^/.70 



%t.40 



^/.20 

 K/./O 

 <Z/.00 

 Z.90 

 «i £0 

 \ IO 

 t .60 

 § .50 

 \ .40 



fe -30 

 k 20 

 & .10 



<3| » ^ 5 N 'O 



«vj> ftj* *T T "5" "5 N "5* **5 -> 



Co Qj > y> <b 9> 



(\j- cvj" <V)^ «»j~ «v Cij" Sj» GJ C\j-. 



V> O J5 



^ «*> i? 



v S- S. 



cvy ««y V 





- 





O UMMcH f&lO ~I/ 



" 



(2/ HER OS J 

























































186 114 IIS 1/7 122 lie 123 109 124 7/3 127 III 126 706 103 I/O 707 708 12/ 119 I2S 

 HERD NUMBER 



24£ 9.S IS.I 188 13.5 9.3 16.7 19.0 2S.0 152 76.2 16.3 27.2 27.7 203 70.7 18.8 29.7 17.5 29.1 22.7 

 AI/ERAGE NUMBER OR COWS IN HERD 



Fig. 4.— Averago production per cow and cost of producing 100 pounds of milk in summer. 



