DAIRY FAR IM I X(J— J )A IRVING. 



475 



Shelter was found to be iiimecessary for dairy cows during tlie luoutli of Feb- 

 ruary. inO*;. It is stated, however, that during this test the weatlier was ex- 

 tremely mild for that somsou of the year. 



Silage V. hulls and meal, A. K. Rissek and R. R. Welch {Jlissixsiiipi 8t(t. 

 liiiJ. 112, pp. 2-8). — In order to present results obtained trom the use of silos, 

 herd records of several farms were collected by the station in cooperation with 

 the Dairy Division of this Department. All cows in the test had practically 

 the same ration in the sununer months of May. June, and July. i. e., pasture 

 supplemented with cotton-seed meal. During the winter months of November, 

 December, and January 7 herds containing a total of 247 cows were fed a dry 

 ration. i)rincipally hulls and cotton-seed meal, with some bran, shorts, and 

 alfalfa, while the eighth herd of 23 cows was fed corn silage and cotton-seed 

 meal. 



.]////,• (111(1 hiitlcr fat pi'ddtictioii irith xihKjc diid dri/ f( cdx. 



Dry-fed herds . . 

 Silage-fed herds 



. Difference 



Average jwunds of 

 milkpercow per 

 month. 



Average pounds of 

 butter fat per 

 cow per month. 



Winter. Summer. Winter. 



357.9 

 364. 9 



240.4 

 33.5.9 



a 17. 12 i a 12. 09 

 17. .58 16.70 



Average 

 cost of 

 feed per 

 cow per 

 month. 



S4.10 

 3. .50 



Average 



cost of 1 



gal. of 



milk. 



Average 



cost of 1 



11.. of 



butter 



fat. 



$0. 146S n $0.2993 

 .089.5 .2098 



. 0895 



" .\verage of 141) cows. 



Notes relative to the construction of silos are given. 



Modern feeding standards for milch cows, N. Hansson (K. Lanilihr. Akdd. 

 Handl. och Tidskr., /,7 (UWS), No. 1-2, pp. 57-73).— \ discussion of the feeding 

 standards of Wolff (1874), Julius Kiihn (1897), C. Lehmann (1S99), Maercker 

 (1902), Pott (1904). Kellner (1005 nnd 1906). and those of the author (1902), 

 founded on the experience of Swedish dairy test iissociations. The author has 

 devised a system of feed units for the use of Swedish dairymen, which he dis- 

 cusses in detail. 



Report of dairy test associations in Norway, 1906-7, L. Funder (CJiristi- 

 (inia, lOOS. pp. 78). — The report shows that 132 different associations were in 

 existence during the year, including 22,764 cows in the aggregate. The average 

 production of milk was 2.026 kg. per cow, 100 kg. being produced for every 70.3 

 feed units (e;ich equal to 1 kg. hay) eaten. Fat determinations in the milk of 

 llie cows were made in the case of only .38 associations. The aver.-ige fat con- 

 lent in the milk, according to the results obtained at the milk control stations 

 for 1906. was 3.48 ]»er cent. 



Milk and butter yields of heifers compared with mature cows, C. I.. Beach 

 i Conn ret icnt Storrs Stu. Rpt. 1907, pp. 11)2-1 'lo). — Tables are given summariz- 

 ing official records of 3,098 Holstein-Friesians and 400 (Juernseys, classified ac- 

 cording to the age of the animals. In the Holsteins " the quality of milk is 

 quite uniform for animals of different ages. The milk of 2-year-old heifers 

 ••ontained 0.2 per cent less of butter fat than that of cows in the mature .j-year- 

 old form." The Ciilculated butter fat yield in 7 days at even age of 2 years is 

 9.0.~) lbs., at 3 years 11.31 lbs., at 4 years 13.22 lbs., and at 5 years 14.35 lbs. 

 Tlie average yearly yield of butter fat of the (iuornseys for the 2-year-old class 

 w.is :!r,2.8 lbs.. I ho :'.-y«>ar-old <l;iss 403.9 lbs.. :iiid the 4-year-old class 4.33..'> lbs. 

 'I'lie iii.iluif form class i .j ycui'S old and over) averaged 4.V..7 lbs. 



