FOODS ANIMAL PRODUCTION. 327 



of food eaten, the quantity and quality of milk produced, and the cost 

 of the feed. Analyses with reference to both food and fertilizing- 

 ingredients are given of the feeding stuffs used. In calculating the 

 cost of luilk the current prices of feeding stuffs were used, and allow- 

 ance was made for the value of the fertilizing ingredients obtainable in 

 the manure. The general conclusions from the experiment were as 

 follows : 



. "This experiment confirms others made at the station, and points out the economy 

 of raising and feeding a greater variety of coarse fodder articles, substituting them 

 for the high-priced hay. 



"Corn-and-soja-bean silage has proved itself to be fully equal if not superior to 

 hay in producing a yield of milk, without aifecting the quality, and at the same time 

 decreasing the absolute cost. This ration |>roduced milk at less than 2 cts. per 

 quart. 



"Roots, -while they are beneficial to the health of the animals, especially those 

 fed upon dry fodder, can not be fed to any extent economically, because of the 

 increased cost of the milk produced. 



" Hay of peas and oats proved itself to be nearly or quite equal to a good quality 

 of rowen for milk production. 



"The dirtereut coarse fodders have not influenced the composition of the milk to 

 any noticeable extent." 



Summer feeding experiment with milch coirs (pp. 36-45). — This experi- 

 ment lasted from July 13 to August 28, and covered 3 periods of about 3 

 weeks each. Six cows Avere used. The rations in different periods 

 were as follows : 



Period 1, green vetch and oats ad libitum, 4 lbs. rowen hay, and 3 lbs. each of wheat 

 bran, Buttalo gluten feed, and cotton-seed meal. 



• Period 2, rowen hay ad Hhitam and 3 lbs. each of wheat bran, Buffalo gluten feed, 

 and new-process linseed meal. 



Period 3, rowen hay, 4 lbs., green corn fodder ad libitum, and 3 lbs. each of wheat 

 bran, Buffalo gluten feed, and new-process linseed meal. 



The feeding experiment was conducted like the preceding one. 

 Analyses of the feeding stuffs used with reference to both food and 

 fertilizing ingredients, and the individual records of the cows are given, 

 together with analyses of the milk. Rating rowen hay at $15 per ton, 

 and green vetch and oats, and green-corn fodder at $2.75 and $2.50, 

 resijectively, the average cost of food per (piart of milk was 2.19 cts. 

 on the green vetch and oats 2.3 cts. on the green-corn fodder, and 2.0 

 on the rowen hay (second period). 



"In case, therefore, of feeding periods 1 and 3, milk was produced at an average 

 price of 2^ cts. per quart, which is fairly low, considering the advanced period of 

 lactation of 3 of the cows. In feeding period 2, on the other hand, the milk cost 2.6 

 cts. jier quart, which shows that other cheaper coarse fodders must be substituted 

 for the costly hay in order to produce milk at a minimum cost. 



"As far as the elfect of feed upon the quality of the milk is concerned, there 

 appears to be no distinct steady increase or decrease in composition. . . . 



"The results in previous years with soja bean, Southern cowpea, serradclla. green 

 rye and peas, and oats liave already been published. They point out clearly the fact 

 that a well-regulated system of feeding dairy stock during the summer is necessary 

 in order to secure the most satisfactory results." 



