[dymond] elevator SCREENINGS 85 



These screenings were from the 1913 crop. The separations were 

 made at the elevator of the Ogilvie Flour Mills Co., Ltd., at Fort 

 William, by a screening separator of the type commonly used in 

 terminal elevators. They, therefore, represent as accurately as 

 possible the average run of the different materials, viz., "Entire 

 screening," "Entire screenings, black seeds removed," "Black seeds," 

 and "Buckwheat screenings." These were all finely ground in the 

 feed mill of the Ogilvie Company. The material, after passing 

 through an attrition mill, was separated into two portions, coarse 

 and fine, by a reel. The coarser portion was further reduced by a 

 "Perplex" grinder. 



As a result of these experiments it was shown that the black seeds 

 are useless as feed and expensive as adulterants. Their admixture in 

 any considerable quantity to other feed makes it unpalatable for all 

 kinds of stock. The addition of molasses to ground screenings con- 

 taining the black seeds makes the feed palatable, but not economical. 

 The most economical way of making screenings palatable is to remove 

 the black seeds. 



Screenings without the black seeds may be fed freely to horses, 

 cattle, sheep or swine, but it is more profitable to have such screenings 

 compose not more than 50 to 60 per cent of the total grain ration. 

 Buckwheat screenings are especially valuable as poultry feed. 



These conclusions are confirmed by the success met with in 

 handling elevator screenings on a commercial basis in accordance with 

 the experimental results. 



Use of Screenings as Feed Since 1915 



Following the publication of the results in 1915, the Board of 

 Grain Commissioners began recleaning the screenings accumulating 

 in their elevators at Port Arthur, Moose Jaw, and Saskatoon. On 

 February 2, 1916, they reported "the demand for recleaned screenings 

 at the moment is considerably larger than the supply." 



On account of the shortage of feed in autumn of 1917, the Live 

 Stock Branch of the Federal Department of Agriculture arranged with 

 the elevators at Fort William and Port Arthur for the purchase of 

 recleaned screenings and distributed them at cost to those requiring 

 feed. This material proved to be so satisfactory that the same 



^See "Grain Screenings" Bulletin Dept. of Agr., Ottawa 



