202 



ILLINOIS DAIRYMEN'S ASSOCIATION. 



Table IX. — Giving the Daily Average of Dry Matter and Nutrients Con- 

 sumed and Milk and Butter Fat Produced During Two Weeks 

 Ending March 24. 



1 J >ry - 



NAME M Sf r er 

 1000 1 w 



Beckley 24.33 



Countess 24.47 



Houston 27.82 



Lou 24.34 



Olive 26.68 



Reddie 27.14 



Belle 21.48 



Lydia 25.15 



Quidee 25.72 



Sweet Briar 25.38 



Topsy 27.75 



Tricksey 25.17 



Total 



Average 



D M. 



DKiKSTIBI.b: 



O. H. 



Av. Daily Yield 



Milk 



24.38 



1.99 



12.82 



.59 



25.81 



Butter 

 Fa1 



21.16 



1.68 



11.22 



.50 



13.17 



.72 



28.80 



2.36 



15.36 



.70 



43.55 



1.03 



25.26 



2.13 



13.46 



.63 



25.99 



1.38 



27.02 



2.20 



14.33 



.66 



33.58 



1.20 



21.13 



1.69 



11.02 



.52 



21.66 



.93 



20.63 



1.66 



10.92 



.50 



15.25 



.78 



20.47 



1.76 



10.76 



.50 



19.73 



.83 



27.42 



2.23 



14.30 



.68 



27.90 



1.01 



22.92 



1.87 



11.95 



.55 



27.05 



.96 



26.98 



2.22 



14.09 



.67 



25.80 



1.37 



31.91 



2.60 



16.65 



.79 



40.04 



1,54 



18.83 



1.51 



9.85 



.46 



16.02 



.87 



292.53 22.91 153.91 7.16 309.74 12.63 



1.05 



All the cows calved the fall preceding, except Belle, that was in milk 

 when she came to the station in June. Three were bred in December, 6 

 in January and 3 in February, so it may be fairly assumed that they were 

 doing just normal work, and that the nutrients required for milk produc- 

 tion may be accepted as a fair average of what is required during the 

 period of lactation. 



The herd consumed on an average 1.99 pounds of crude protein 

 (NX 6.25) per day, and yielded 25.81 pounds of milk daily, containing on 

 an average 4.06 per cent fat. The Wolff-Lehmann standard gives 2.5 

 pounds protein as the amount required by a cow yielding 22 pounds of 

 milk daily, while the cows in this experiment produced 25.81 pounds with 

 only 1.99 pounds crude protein. The average weight of the cows during 

 the trial was 950 pounds, and calculating that they required .7 of a pound 

 of protein daily for body maintenance, there remains 1.34 pounds of pro- 

 tein daily for milk production, and since they gave 25.81 pounds they 

 returned one pound of milk to .051 of protein after deducting the calcu- 



