DAIRY FARMING DAIRYING. 



85 



Brief mention is made of the use of tuberculin in other States. 



Mallein as a diagnostic for glanders in horses, V. A. Kich 

 {Vermont Sta. Ept. ls!)i, p. 141). — Notes and tabulated data on tlie 

 temperature record and post-mortem notes for 11 cases in which mallein, 

 procured from the Bureau of Animal Industry of this Department, was 

 injected as a diagnostic for glanders. Six of the animals reacted and 

 on being killed proved to be badly diseased. 



Bovine tuberculosis, .T. \j. Hills and F. A. Rich {Vermont Sta. Rpt. 1894, pp. 

 17-70, pis. 2, figs. 2).— A reprint of Bulletin 42 of the station (E. S. R., 6, p. 663). 



DAIEY FARMING— DAIRYING. 



Robertson mixture vs. corn silage, J. L. Hills ( Vermont Sta. Rpt. 

 1891, pp. 112-118). — In one i)art of a silo was placed field corn alone, 

 and in another the Eobertson mixture of corn fodder, horse beans, and 

 sunflowers. Owing to the dry weather the stand of horse beans was 

 poor, and in order to get sufficient of the mixture for a feeding test 

 soja beans were used. Analyses are given of the corn fodder, horse 

 beans, soja beans, sunflower heads, and the 2 kinds of silage, and the 

 loss of constituents in ensiling is calculated. The loss of dry matter 

 in ensiling was 27.0 j>er cent for the corn silage and 33.7 per cent for 

 the Eobertson mixture. "The losses are excessive, greater than should 

 occur in a good silo. As usual they fall mainly upon the more soluble 

 carbohydrates." 



The 2 kinds of silage were fed in an experiment with cows, cov- 

 ering 4 j)eriods of 4 weeks each. The cows were divided into 2 equal 

 lots, fed alternately on the 2 kinds of silage. Each of the cows 

 received 10 lbs. of hay per day, from 45 to 50 lbs. of silage, and while 

 on corn silage 4 lbs. of bran and 4 lbs. of corn meal daily ; wliile on the 

 Eobertson mixture 2 lbs. less of grain per day was fed for every 50 lbs. 

 of silage. The individual records of the cows are tabulated and the 

 data summarized. 



The following table shows the average yields for the last 15 days of 

 all the periods: 



Yield and composition of milk from cows on corn silage and on Rohertson mixture silage. 



"Considering the yiekls from the dry matter eaten, the balance is strongly in 

 favor of the Robertson mixture, more milk and butter being produced than from 

 similar weights of dry matter iu corn silage. The cows, if anything, gained iu 

 weight on the mixture. It seems that in this test, at any rate, the claims made for 

 the mixtiiro are not without basis. 



