DAIRY FARMING DAIRYING. 479 



DAIRY FARMING -DAIEYING. 



Investigation in milk production, T. L. Haecker {Minnesota Sfa. 

 Bui. 67., pp. oSS-blG^ 550-556, fidjH. 30, d(jms. 3). — This is a detailed 

 report of dairy work covering a period of 3 years, 1894-1896. 



System of l-eeplmj dairy records (pp. 334-340). — Illustrations from 

 the milk and feeding records of the dairy herd are given and briefly 

 discussed. 



Herd record for 1891^ (pp. 340-355).— The herd included 26 cows, 10 

 of which remained during the year. A full account is given of the 

 management and record of the herd. Tables show the nutrients in the 

 rations fed, the milk and fat produced, amount and cost of food con- 

 sumed, etc. The 10 cows produced during the year on an average 

 4,909.7 lbs. of milk, containing 232.8 lbs. of fat, at a cost for food of 

 $29. 72. The corresponding averages for 1893 were 6,407. 7 lbs. of milk, 

 306.9 lbs. of fat, and $37.82, cost of food. 



Ooiiiparing wheat with harley and corn (pp. 356-365). ^-A ration con- 

 taining 7 lbs. of wheat was compared with a ration containing 4 lbs. of 

 barley and 3 lbs. of corn. In addition each ration contained the same 

 quantities of bran, oil meal, timothy hay, and roots. The test was 

 made with 12 cows, divided into 2 equal lots, and covered 4 periods of 

 2 weeks each. The rations were changed during alternate periods. 

 The production of milk and butter fat was practically the same on the 

 two rations. Slightly more digestible protein was required for the 

 production of butter fat when the wheat ration was fed. The results 

 are considered as showing no practical difference in the feeding value 

 of ground wheat and ground barley and corn. 



Convpa/ring prairie hay with tiinothy (pp. 366-379). — Prairie hay and 

 timothy hay were compared in rations containing grain and silage 

 in addition. The test included 12 cows and lasted 8 weeks. The cows 

 produced more milk but less butter fat on timothy hay than on prairie 

 hay. AVhen prairie hay was fed more dry matter was required for 

 the production of milk and less dry matter for the production of butter 

 fat than when timothy hay was fed. The general conclusion is drawn 

 that the two kinds of hay have equal feeding value. The cost of pro- 

 duction of 1 lb. of butter fat was 13.3 cts. on timothy hay and 11.5 cts. 

 on prairie hay. 



Herd record for 1895 (pp. 380—415). — A .description is given of each 

 of the 13 cows remaining in the herd during the year, together with 

 a detailed account of the feeding and care of the herd. Results for 

 the year ai'e tabulated and discussed. The average production per 

 cow was 7,418.6 lbs. of milk, containing 302.3 lbs. of fat. The average 

 cost of food was 128.47. 



Eight cows of the herd were divided into 2 groups according to type. 

 Group 1 contained cows spare and angular in conformation and having 



