902 



EXPERIMENT STATION RECORD. 



regarded as certain that 12 lbs. per 1.000 lbs. live weight is, on the average, 

 excessive. It is considered doubtful if an increase in the- amount of grain has 

 any appreciable influence upon the quality of the milk. 



The morning milk of an average lot of cows, even when well fed, may fre- 

 quently be under tbe standard in butter fat during the earlier part of the lacta- 

 tion period and an increased amount of grain causes but little improvement in 

 this respect. The gain in live weight of cows fed a heavy grain ration was 

 much greater toward the end of tbe lactation period. The results, therefore, 

 are in favor of tbe practice of feeding dairy cows grain rations largely in pro- 

 portion to the amount of milk produced. 



Tbe second series of experiments reported related to the effect upon the 

 quantity and quality of milk of equal and unequal intervals between milkings. 

 One lot of 5 cows was milked at a. m. and 4 p. m. and another lot at 6 a. m. 

 and p. m. When tbe intervals were equal tbe morning milk contained on an 

 average 4 per cent of fat and when unequal 3.0 per cent, confirming results 

 obtained elsewhere. 



Contribution to the manner of conducting practical feeding experiments 

 with milch cows, A. Ostermayer (Osterr. Moll: Ztg., 13 (1906), Xos. 2, pp. 

 15-17; 3, pp. 29, 30). — Tbis article summarizes briefly the results of 15 feeding 

 experiments in different parts of Moravia. Each test lasted 120 days divided 

 into 5 periods. During the second and fourth periods the value of sesame cake 

 was tested. In all 93 cows were used in the trials. The results were favorable 

 to the feeding of sesame cake, but are discussed mainly with a view to showing 

 tbe value of conducting practical tests of tbis kind. 



On the influence of feeding stuffs on milk and milk products, A. Burr 

 (Moll: Ztg., 19 (Wo.V). Vox. 1,0, pp. 1025, 1026; ',■'». pp. n',7. ll',S: J,9, pp. 1243, 

 1244; 50, pp. 1261. 126$: 51, pp. 1295-1297). — Tbis summarizes considerable 

 information on tbe effects of feeding cows potatoes, potato vines, potato pulp, 

 the residue from the manufacture of alcohol from potatoes, root crops, beet pulp, 

 molasses, articbokes, various leguminous crops, and other feeding stuffs. 



Dairy cow demonstration of the Louisiana Purchase Exposition, E. H. Far- 

 kington (Fort Atkinson, Wis.: W. T). Hoard Co., 190.1, pp. 64, figs. 25).— This 

 report contains the supplementary regulations governing the tests, the general 

 plan on which the demonstration was conducted, analyses of tbe feeding stuffs 

 used, and the daily records of the herds, which consisted of 5 Buwn Swiss cows. 

 15 Holstein cows. 25 Jersey cows, and 29 Shorthorn cows. The test lasted 120 

 days. Tbe following table summarizes some of the data obtained: 



Record of the best, poorest, and <irer<t</e coir in each herd. 



Food 

 cost of 

 butter 



per 

 pound. 



Brown Swiss: 



Best cow 



Poorest cow . 



Average cow 

 Holstein: 



Best cow 



Poorest cow . 



Average cow 

 Jersey: 



Best cow 



Poorest cow . 



Average cow 

 Shorthorn: 



Best cow 



Poorest cow . 



Average cow 



Cts. 

 13. 



15. 

 14. 



11. 

 16. 

 13. 



15.3 



