DAIRY FARMING DAIRYING. 83 



"This experiment can not be accepted as in any way conclusive, and yet it would 

 seem to indicate that while the cows in the Htal)le increased slightly more in the 

 percentage of l)utter fat in their milk than did the lot in the paddock, yet they ate 

 more of the feed and fell off more in the amount of milk given, though they decreased 

 much less in total fat production. It is easily seen, however, that the increase in the 

 total amount of butter fat given in the one lot over the other in this experiment was 

 not sufficiently great to pay for the increased trouble and expense entailed in the 

 stabling of the cows during the greater part of every day." 



The effect on dairy cows of changing milkers, W. L. Carlyle 



( ]f7.svY/;;.sv'/;. ^Sta. Rpt. 1S99, pp. S9-9t).—Y\\Q effect of the constant 

 changing- of milkers was studied with 8 cows in advanced stages of 

 lactation. The experiment covered 5 periods of 4 days each. During 

 the first, third, and fifth periods and for several days preceding each, 

 the milking was done by the regular milkers. During the second and 

 fourth periods each cow was milked bv a different person at each 

 successive milking. None of the milkers were strange to the cows. 

 The data for the experiment are tabulated. With the regular milkers 

 the average yield of all the cows for 4 days was 69.29 lbs. of milk, with 

 an average fat content of 4.75 per cent. With changing milkers the 

 yield of milk was 73.73 lbs, and the fat content 4.85 per cent. 



"While the results would seem to show that there is a slightly increased production, 

 on the average, from the constant changing of milkers, yet the increase is so slight 

 that very little importance can be attached to it. The results of this experiment are 

 important, however, in that they go to show that when all the cows in a herd are 

 kindly treated by all the milkers, a changing of the milkers of the individual cows 

 in the herd has no appreciable effect upon the milk and butter produced and it 

 appears as if the cows appreciated a change. ' ' 



Dairy herd record, W. L. Carlyle ( Wiscotisin Sta. Rpt. 1899.^ 

 fp. 68-88., fig a. II/). — A dairj^ herd comprising 6 grade Jerseys, 6 grade 

 Guernsej^s, and 6 grade Shorthorns was purchased to compare the cost 

 of the milk and butter production of cows of the special -purpose dairy 

 type, represented hy the Jersey and Guernsey grades, and cows of the 

 dual-purpose type, represented by the Shorthorn grades. The ani- 

 mals were of the highest dairy type of the breed and class to which 

 they belonged. They were given the same care and treatment. Tables 

 show the breed, age, and weight of cows; kind, amount, and cost of 

 food eaten; number of daj^s in milk; yields of milk and butter; and 

 the value of products and total profit for each of 14 cows which were 

 in the herd during the entire year. Of this number 3 were grade Jer- 

 seys, 5 grade Shorthorns, and 6 grade Guernseys. The average profit 

 over cost of feed from each of these breeds was, respectively, 159.05, 

 $50.71, and $55.47 per cow. A grade Shorthorn gave the largest 

 yield of milk and butter. The results of this preliminary work, while 

 not considered conclusive, show a favorable comparison of the Short- 

 horn grades with the Jersey and Guernsey grades in the cheapness of 

 butter production. An illustration is given of each of the 14 cows, 



