984 



EXPERIMENT STATION RECORD. 



The following table summarizes the results of each test: 



Original and suggested radons fed to dairy cows. 



" In 3 of the experiments the average cost of the ration used in the second test was 

 less than that of the one used in the first test. The cost of producing 100 lbs. of milk 

 was also less in the second te.st of the same 3 experiments, while the cost of produc- 

 ing 1 lb. of butter was less in all cases. 



' ' The economy of feeding according to the yield of milk or of butter fat will depend 

 much upon what yields are taken as a basis in feeding. In these experiments there 

 was used about 2 lbs. of digestible protein for 0.50 to 0.65 lb. of butter fat, and the 

 protein was increased by 0.3 lb. for an increase of 0.15 lb. in the yield of fat. In the 

 cases of 3 herds this plan of feeding proved more profitable than the one of feeding a 

 nearly uniform ration to all the cows. 



"The experiments, as a whole, help to verify the earlier work of this station, and 

 point out the economy of feeding a larger proportion of protein than most farmers 

 are in the habit of feeding. Rations supplying from 1.80 to 2.60 lbs. of digestible 

 protein per day, according to the yields of milk or of butter fat, have generally 

 proven more profitable than those furnishing less jirotein." 



Forage for dairy cows, T. L. IIaecker {Farm Sludeiits' Rev., 7 {1902), No. 5, pp.. 

 74, 75). — The improvement of cows by feeding is briefly discussed, and notes are 

 given on several forage crops. 



Oil cakes in the feeding of dairy cows, J. B. Martin {Jour. Agricole [Paris], 13 

 {1902), No. 143, pp. 34-08). — The relative value of different oil cakes for dairy cows 

 is discussed, average analyses of several oil cakes are given, and 4 rations for dairy 

 cows are suggested. 



Records of station cows; feeding dairy cows, J. S. Moore {Mississippi Sta. 

 Bid. 70, pp. 19) . — Summarized records are given of the station herd of Jersey cows 

 for the calendar years 1897-1901. The average yield of milk per cow for the 4 years 

 varied from 4,043 to 5,149 lbs., and the average yield of butter fat from 210.4 tO' 

 278.6 lbs. 



Experiments in comparing cotton-seed meal with wheat bran and cowpea hay with 

 Johnson grass hay, and on the relative feeding value of different grains, have already 

 been noted (E. S." R., 13, p. 586). 



A test was made of the effect of feeding grain to cows on good pasture. Three cows 

 were fed cotton-seed meal and wheat bran for 6 weeks, and 6 cows were fed the same 

 amount during the same period and a reduced quantity during the 6 weeks following. 

 The difference in yield was not sufficient to justify the feeding of grain. 



Several rations for dairy cows are suggested and notes are given on the care of 

 cows, rearing calves, and the influence of feed on the quality of milk and butter. 

 The station herd was fed for periods of 2 weeks each rations containing, respectively» 



