FOOD EFFECT ON MILK SECRETION. 217 



each period at which it was used. A shrinkage occurred at each time the 

 change occurred away from the clover 



VETCH HAY caused a slight gain. 



MIXED HAY gave an increase over mixed and oat hay. 



OAT HAY had less value than other fodder. The effect was upon quan- 

 tity and not quality. 1 



PEAS AND OATS hay were not relished, but when eaten gave high value.' 2 



APPLE POMACE has about the same value as silage. 3 



BEETS were found to increase the flow of milk, but not enough to pay 

 for the extra cost of the ration. 4 



SUGAR BEETS as well as carrots almost without exception temporarily 

 raise the quality of milk. 5 They give butter of good color which keeps 

 well, but like that from potatoes, is not of high grade. 6 



SUGAR BEET PULP, pound for pound, on the basis of dry matter, was 

 found to be equal to corn silage. The milk produced from feeding the 

 beet pulp, as it comes from the sugar beet factory, is worth about one-half 

 that of corn silage. In this experiment five cows were used for a period of 

 eleven weeks, the time being equally divided between the two feeds. , There 

 was no constant effect upon the percentage of fat. 7 



ROOTS WERE COMPARED WITH SILAGE in a feeding trial with the result 

 that apparently the roots seemed to do best, but estimated on the basis 

 of air dried content, the silage gave the best results. 8 



GREEN FOOD. A change from dry to green food increased the quantity 

 but only slightly altered the quality. 9 



CARROTS had the greater value, pound for pound, for the vegetable 

 matter they contained than corn silage. 10 



POTATOES produced a butter that is colorless and lacks keeping qualities. 



PASTURE WITH GRAIN RATION ADDED. An experiment was conducted to 

 try the influence of the addition of a grain ration to cows on pasture. Three 



1 Bulletin 13, New Hampshire Agr. Exp. Station, G. H. Whitcher. 



2 Report Vermont Agr. Exp. Station, 1889, J. L. Hills. 



3 Ibid. 



4 Bulletin 5, Ohio Agr. Experiment Station, Vol. III. 



5 Report Massachusetts Agr. Experiment Station, 1889. 



6 Bulletin 17, Iowa Agr. Experiment Station. F. A. Leighton and D. 



B. Bisbee. 



7 Bulletin 183, Cornell Agr. Experiment Station. H. H. Wing and Leroy 



Anderson. 



8 Bulletin 26, Penn. Agr. Exp. Station. H. J. Watters and R. J. Weld. 



9 Bulletin 9, New Hampshire Exp. Station. G. H. Whitcher. 

 10 Report Mass. Agr. Exp. Sta., 1888. 



