Apr. 24, igi6 



Effect of Water in Ration on Milk 



173 



TURNIPS VERSUS DRY-ROUGHAGE RATION 



In this series of experiments four cows were used, the experimental 

 period consisting of six test periods and two transition periods. 

 Figure i shows the grouping of the cows and the character of the ration 

 fed during each period. 



As much as 90 pounds of turnips a day was fed to the cows on the wet- 

 roughage ration, with the addition of 4 pounds of clover hay. The 

 roughage ration of the dry-roughage group consisted entirely of clover 

 hay. The grain ration was the same for both groups. In Table II 



Fig. I.— Grouping of cows and kind of ration fed cows 23, 24, 2s, and 27 



both the quantity of water drunk and the total water content of the tur- 

 nips are given, turnips being considered as having 90 per cent of water, 

 as shown by Henry and Morrison (5, p. 645). 



Table II. — CoTnparison of the effect of turnips and a dry-roughage ration on the com- 

 position of milk 



cow 23 



Ration. 



Wet 



Do... 

 Transition 

 Dry 



Do... 

 Transition 

 Wet 



Do... 



Average : 

 Wet. . 

 Dry.. 



Wet 



Do... 

 Transition 

 Dry 



Do... 

 Transition 

 Wet 



Do... 



Average : 

 Wet. . 

 Dry.. 



Total 

 milk. 



Lb. 



234.7 

 236.9 

 225.2 

 212. 4 

 214. 6 

 204. 2 

 198.6 

 192.9 



215.8 

 213-5 



Water 

 in ra- 

 tion. 



Lb. 

 94 

 123 

 446 

 712 



734 



190 



62 



92 

 723 



Tur- 

 nips. 



Lb. 

 774 

 810 

 261 



630 

 810 

 810 



801 



Fat. 



'. ct. 

 . 10 



•30 



•03 

 . 00 



■03 

 .90 



• 13 

 •05 



4. 14 

 4. 01 



Lb. 

 9. 62 

 10. 19 

 9.08 

 8. 50 

 8.65 

 7.96 

 8.20 

 7.81 



8-95 

 8-57 



Specific 

 gravity. 



1.032 

 1.030 

 1-031 

 1.030 

 1.030 

 I. 030 

 1.030 

 I. 031 



Solids 

 not fat. 



P.ct. 

 64 



50 



52 

 44 

 40 



55 

 47 

 69 



57 

 42 



Mois- 

 ture. 



P.ct. 

 87.26 

 87. 20 



87-45 

 87.56 



87-57 

 87-55 

 87.40 

 87.26 



87. 28 

 87.56 



Ash. 



P.ct. 



0.750 



. 720 



•735 

 •715 

 . 700 



•725 

 •725 

 • 740 



732 



707 



Total 

 pro- 

 tein. 



P.ct. 

 3- 18 



3-09 

 3-17 

 3-09 

 3- 13 

 3- II 

 3-24 

 3.28 



3.20 

 3-" 



cow 24 



255-1 

 251-3 



234- 5 

 226. 4 



226. 7 

 234.0 

 237.2 



227. I 



242. 7 

 226. 5 



72 



389 

 607 

 658 

 119 

 56 

 144 



774 

 810 

 261 



630 

 810 

 810 



632 



8or 



4. 10 

 4. 10 



4-3° 

 3.80 



4- 

 3- 

 4- 

 4- 



00 



4. 10 

 3-90 



035 

 035 

 035 

 034 

 033 

 033 

 033 

 034 



9.96 

 8.83 



9- 



9- 



9- 



9- 



9- 



9- 



9-31 



9-51 



9-53 

 9. 26 



86.37 

 86.83 



710 

 690 

 690 

 645 

 635 

 695 

 680 



715 



699 

 640 



3-64 



3-52 

 3-42 



