8 



BULLETIN 736, U. S. DEPARTMENT OF AGRICULTURE. 



containing 1,437.41 pounds of butterfat. Accordingly, under the 

 open -shed system there was a total increase for the period considered, 

 about 2.71 months, of 2,732.2 pounds of milk and 97.74 pounds of 

 butterfat, or an average for each cow of 130.1 pounds of milk and 

 4.6 pounds of butterfat. The total number of months compared 

 under each system was 57. Calculations from these figures indicate 

 that there was an average monthly increase of 48 pounds of milk 

 and 1.7 pounds of butterfat for each cow while stabled in the open 

 shed. 



Tables 2 and 3 show, respectively, the feed and digestible nutrients 

 in the feed consumed by the two groups covering the same period of 

 time as the production shown in Table 1. Where the figures in 

 Table 1 are an average of two years the feeds in Tables 2 and 3 are 

 also an average of two years. 



Table 3. — Digestible nutrients in feed consumed. 



Feeds. 



Concentrates: 



Corn meal 



Wheat bran 



Cottonseed meal. 



Fish meal 



Dried-beet pulp. 



Total. 



Roughage: 



Alfalfahay 



Cowpea hay 



Crimson-clover hay. 



Red-clover hay 



Timothy hay 



Corn stover 



Cottonseed hulls — 



Total. 



Silage and roots: 

 Corn silage . . . 

 Turnips 



Total. 



Grand total 



Pounds digestible nutrients required to 

 produce 1 pound of fat 



Open-shed group. 



Protein. 



Pounds. 

 515. 98 

 698. 37 

 951. 57 

 44.98 



Carbohy- 

 drates 



Pounds. 



5,159.82 



2.324.19 



692.31 



2,210.90 8,176.32 



614.52 

 202. 24 

 199.12 



10.63 



675. 61 



675. 61 



3,913.02 

 2.55 



1,580.87 



767. 28 



1,029.66 



9,212.85 



9,212.85 



20,981.52 

 13.67 



Pounds. 

 261.73 

 167.61 

 225. 07 

 13.80 



668. 21 



46.91 

 20.85 

 47.16 



3.54 



118.46 



429. 93 



429. 93 



1,216.60 

 .79 



Closed-barn group. 



Protein. 



Pounds. 

 406. 82 

 677. 37 

 985. 30 



37.72 



84.91 



438. 98 



345. 61 



73.26 



1.71 



19.34 



2.62 



966. 43 



Carbohy- 

 drates. 



Pounds. 



4,068.24 



2, 254. 30 



716. 85 



534. 64 



7, 574. 03 



312.39 

 1,129.29 

 1,295.36 



378. 85 

 24.40 



390. 50 



290. 71 



3,821.50 



495. 34 6, 7.54. 65 

 6. 68 400. 80 



502. 02 



3,575.66 

 2.49 



7, 155. 45 



18, 550. 98 

 12.91 



Fat. 



Pounds. 

 206. 36 

 162. 57 

 233. 05 



6.56 



7.21 



33.51 



35. 20 



17.35 



.68 



6.45 

 13.03 



113. 49 



315.22 

 13.36 



1 , 050. 61 

 .73 



It may be noted in Table 3 that when the cows were kept in the 

 open shed they required more digestible nutrients. However, the 

 quantities of digestible nutrients required to produce one pound of 

 fat in each of the two stables did not vary appreciably. 



