ON THE EFFECT OF A GRAIN RATION FOR 



COWS AT PASTURE. 



This investigation is a continuation of a similar experiment 

 carried on at the station in the summer of 1889 and reported under 

 the above title in Bulletin No. XIII, for December, 1889. With 

 slight variations, that will appear in their proper places in the 

 text, the experiment of the past summer is a duplicate of that 

 conducted in 1889, the details being as follows. 



THE COWS. 



Six cows were divided into two lots of three each, so that the 

 lots should be as evenly matched as possible in age, milking qual- 

 ities, condition of flesh, and distance from calving. Four of the 

 cows were from the University herd, the other two were bought 

 for the purpose and were natives, fresh in milk and very thin in 

 flesh. 



Lot I. — Fed no grain. 



No. 1 : Glista, thoroughbred Holstein, three years old, dropped 

 last calf April 22, 1890. Not bred. 



No. 2 : Cora, high grade Jersey, about six years old, dropped 

 last calf March 26, 1890, bred May 10, 1890. 



No. 3 : Shadow, native, five years old, dropped last calf about 

 April 1, 1890. Not bred. 



Lot II. — Fed grain. 



No 1 : Jane, high grade Holstein, seven years old, dropped last 

 calf April 9, 1890. Not bred. 



No. 2 : Gem of Spring Brook, thoroughbred Jersey, six years 

 old, dropped last calf March 4, 1890, bred May 24, 1890. 



No. 3 : Phantom, native, three years old, dropped last calf 

 about April 1, 1890. Not bred. 



The uniformity of the two lots at the beginning of the experi- 

 ment, is shown by the following table '■ 



