I.AIKV lAKMl.Mi- DAIRYING. 285 



When 6 to 8 animals are used in feeding trials by the alternation method there is 

 believed t<> be practically no experimental error. 



A comparison of feeding- trial methods, .1. I.. Hills Vermont Sta. !>'/>t. 7904, 

 pp. 511-528).- -This gives tin- results of the fourth test of the 2 methods of conducting 

 feeding trials designated tin- "simple alternation system" and tin- "combined con- 

 tinuous and alternation system,*' the same conclusion being reached a- in previous 

 years that the alternation system is the better of the two. While it ie not considered 

 likely that material change in this position will result from future trial-, it i- never- 

 theless the intention to accumulate additional 'lata on this subject. 



Record of the station herd for 1903-4, .1. I.. Hills I Vermont si,,. /;/,/. 1904, /'/'■ 

 . . Records of 51 cows for t he year are reported. Some of the average results 

 are ;i- follow-: 



Yield of milk 5,018 lbs., fat content 5.07 per cent, total >olids L4.42 per cent, 



yield of butter 296.8 lbs., cosl of f 1 sjx. n. and proceeds from -ale of butter, 



■B9.05. Records of the herd for li) years have now been obtained, ami the com- 

 mencement of an attempt to digesl this mass of data ha- been made which, it is 

 hoped, may he reported upon in the near future. 



Report of dairy department, J. S. M n: ( Mississippi Sta. /!/>/. 1904, PP- 16 



Records of i' .Jersey cows and ofr> native or grade cows for I year are reported. T'ne 

 average yield of milk of the Jersey cows was 4.!»<r_' lbs. for the year, and of the other 

 cows 3,904 lbs. The average cosi of producing I lb. of butter in the former case was 

 ST.48 cts. and in the latter 1 1.9 cts. 



In an experiment lasting -4 week- 1 COWS were turned on native pasture ami 4 were 

 put on a 3-acre field of hairy vetch. The cows on vetch pasture received in addition 



cotton— eed hulls and meal, while the other cows received hay, cotton-s 1 hulls and 



meal, and wheat hran in addition to the native pasture. The cows fed hairy vetch 

 produced in the 4 weeks 272 lbs. more milk than the other cow.-. Allowing market 

 values for the feeds consumed and the milk produced, a difference of $15.44 was cred- 

 ited to the .'! acres of hairy vetch. The yield of vetch seed was apparently not 

 decreased hy the grazing. 



Forage and soiling- experiments, 1903, G. C. Watson and T. 1. Mai i:- Penn- 

 sylvania Sta. Rpt. mo.}, j>\>. 170-172, 174-182). — Ten forage crops were grown during 

 the season and fed to 5 cows, the work being in continuation of experiments pre- 

 viously reported (E. S. R., 15, p. 998). The authors summarize the results obtained 

 as follow-: 



"(1) of the various crops grown alfalfa produced the largest yield of air-dry sub- 

 ■ance per acre. As a green forage this crop was quite satisfactory. The cows ate il 

 with considerable relish, and everything considered it proved amosl satisfactory 

 ■oiling crop. Wherever alfalfa can be grown successfully il is to be recommended 

 for Boiling purposes. 



"(2) Flat peas produced next to the largesl yield of dry matter and also next to 



the largest yield of total protein. This plant when well established gives a large 

 yield of forage that is rich in protein, but as a soiling crop for dairy cows il is not to 

 he specially recommended for several reasons. It requires two or three years to 

 become well established. It is not relished by cattle and it may impart to the milk 

 an undesirable flavor when not cautiously in\. 



"(3) Corn ranks third in a production of air-dry substance, and i- one of the best 

 and cheapest of soiling crops. The most serious objection to this crop is due to the 

 fact that its period of maturing is so late in the season that it can not be profitably 

 fed in the fresh condition except in the latter part of the Beason. 



"(4) Sorghum and cowpeas produced a large yield of nitrogenous and palatable 



tood. This combination proved most satisfactory in all respect-. The cows ate it 



readily, and from the feeder's standpoint very few objections were noted. 



