162 



HATCH EXPERIMENT STATION. 



[Jan. 



Part II. — Dairy and Feeding Experiments. 



J. B. L1NDSEY.* 



A. Effect of Feed on the Composition of Milk and 

 on the Consistency or Body of Butter. 



Experiments of this character have been in progress since 

 18118. A general outline of those previously completed will 

 be found in the preceding (thirteenth) report of this station 

 (pages 14-33). 



During the autumn and winter of 1900-1901 another 

 series was conducted, for the purpose of noting particularly 

 the eflect of cotton-seed meal with a minimum amount of 

 oil, and likewise with the addition of cotton-seed oil, on the 

 relative proportions of the several ingredients in milk and 

 butter fat and on the body of the butter. It is intended at 

 present only to briefly outline the character of the experi- 

 ment, and to call attention to a few of the more important 

 facts ; the full data will be published later. 



Plan of Experiment. — Ten cows were divided into two 

 herds of five each. During the first period both herds 

 received the same or so-called standard ration. During the 

 three subsequent periods Herd I. continued to receive the 

 standard ration as in the first period, and in case of Herd II. 

 a portion of the standard ration was replaced by cotton-seed 

 meal, cotton-seed oil and Cleveland flax meal. 



Table I. — Duration of Experiment. 



Periods. 



First period, both herds standard ration, . 



Second period, Herd II., cottonseed ration, 



Third period, Herd II., cotton-seed oil ration, . 



Fourth period, Herd II., Cleveland flax meal 

 ration. 



Dates of Experiment. 



Nov. 17 through Dec. 7, 

 Jan. 5 through Feb. 8, 

 Feb. 23 through April 6, 

 April 20 through May 16, 



Length in 

 Weeks. 



* Together with E. B. Holland, P. H. Smith, Jr., and J. W. Kellogg. 



