Arizona Agricultural Experiment Station. 331 



line, by the price of butter fat at the creameries for each month. 

 Here is illustrated the great advantage of winter dairying and 

 the importance of having cows at their best during that part of 

 the year when prices are invariably highest. 



- 4LM 



FEEDING SUGAR BEETS. 



A few sugar beets on hand, as a result of experiments in 

 growing them for sugar production, gave an opportunity for try- 

 ing them as feed for cows. It 

 was planned to feed beets to 

 three of the cows on pasture for 

 two weeks, to the other three 

 cows for the following two weeks, 

 and then compare the product of 

 the six cows with and without 

 beets during the month covered 

 by the trial. Two conditions 

 operated to lessen the value of 

 the experiment ; first, cow No. 2 

 refused to eat beets ; second, a 

 very trying storm from which 

 there was no shelter, caused 

 all the cows to drop off in both 

 milk and butter fat to such an 

 extent that one could not con- 

 sider the variations during that 

 period- as due to feeding. Fig. 

 2, herewith, upon which the 

 lines show the variation in pro- 

 duction of butter fat by weeks for 

 each of the six cows of the herd 

 during the period of feeding, and 

 the weeks immediately preceding and following, may be studied 

 with interest. The effect of exposure to storm (during the second 

 week of the trial, ending November 27th,) upon the produc- 

 tion of butter fat is most clearly shown. This was not so great 

 in the case of the two cows receiving beets. The increase shown 



Showing effect of storm upon 

 butter fat production. 



