DAIRYING DAIRY FARMING. 



875 



from these data summaries are made of the averages for each period, 

 the averages calculated to 1,000 kg. live weight, and the averages cor- 

 rected for the natural decline with advancing lactation.' 



The results with 2 of the cows were not considered normal, owing to 

 digestive and other disturbances, and these were excluded in making 

 up the averages. The average results for the 6 cows in each period are 

 summarized below: 



Average yield and composition of milk on different grain rations. 



Grain feed per 1,000 kg. Hve freight. 



8 kg. barley meal 



8 kg. molasses-peat feed. 



8 !,»;. fresh molasses 



10 kg. molasses and palm-nut meal 



7 kg. molasses chips 



3.81 kg. molasses pulp 



8 kg. barley tueal 



Daily average. 



Milk 

 yield. 



l'al i on- 

 tent. 



Total 



solids. 



Kg. 



17. 075 

 14. 131 

 13.601 



12. an 



12.770 

 11.924 



13. 575 



Per c< nt. 

 3.109 



3.156 



3.379 

 3. 021 

 3.760 



Per cent. 



11. 780 

 11.782 



12.27:; 



12. 242 

 12. 528 

 12.470 

 12. 502 



Daily a>. erage per 1,000 Kl 



li\ c weight. 



Milk 



yield. 



Butter 



fat. 



Total 

 solids. 



Kg. 



27. 233 

 26. : 38 

 24. 478 

 24. 811 

 23.268 

 26. 054 



Kg. 

 L. 02189 

 .85382 

 .00410 

 . 81830 



88446 

 . 85962 

 . 00200 



Kg. 



::. 87403 

 3. 19690 



:;. 22010 



2. 98558 

 3 --'.-; 

 2.88314 



3. 33099 



The different preparations of molasses were as a rule readily eaten, 

 except in the case of the molasses pulp, which the cows did not appear 

 to like well and refused to eat more than about half as much as of the 

 other preparations. The molasses did not agree well with some of the 

 cows. Only in the case of the liquid molasses was the whole quantity 

 intended for each cow readily eaten. None of the molasses prepara- 

 tions appeared to be equal to barley meal for milk production. On the 

 other hand, the author considers that the molasses feed favored an 

 increase in the percentage of fat in the milk. The effect on the total 

 solids was practically the same as on the fat. 



With respect to the effect of the molasses preparations on the yield 

 of milk, the molasses chips stood first, although the liquid molasses 

 was nearly as advantageous. The sugar content of the milk did not 

 appear to be affected by feeding molasses. The average sugar content 

 of the milk of different cows showed only a maximum difference of 

 0.41 per cent. The butter made during the molasses feeding was in 

 every way equal to that made on barley meal, and no difference was 

 observed in the churning or the taste of the butter or the milk. 



The cows for which the data are given were likewise under experi- 

 ment the year preceding (1805) and the average fat content of the milk 



'In making this correction it was assumed that the difference between the pro- 

 duction in the first and the last periods, during both of which barley meal was fed, 

 represented the normal shrinkage due to advancing lactation ; and that on a uniform 

 ration the shrinkage from month to month would be regular. From this difference 

 between the first and last periods the percentage of shrinkage was calculated ( i. e., 

 the percentage relation of the total shrinkage to the production in the first period), 

 and as the feeding covered 123 days this percentage of shrinkage was divided by 123, 

 giving the percentage of shrinkage per day. With the aid of the latter the correc- 

 tion of the data for each period was made. 



