Feeding Experiments. 35 



Screenings complete. — 1. In the above experiments complete finely 

 ground screenings were, to all classes of stock, somewhat unpalatable 

 due to black seeds. It required several weeks for animals to over- 

 come their dislike of these seeds. 



2. Complete screenings proved a very valuable meal, but best 

 when comprising only a part of the total meal ration. 



3. Complete screenings for lambs in the above experiment, 

 ■when compared with grains and roughages at market values, have 

 a value of $39 per ton when comprising 50 per cent of the grain ration 

 and $26 per ton when comprising the total grain ration. 



4. Mr. W. H. Fairfield, Superintendent, Experimental Station, 

 Lethbridge, Alta., reports screenings of about equal analysis to be 

 worth in lamb feeding from $10 to $35 per ton depending on methods 

 of feeding aixd values of other foodstuffs. Readers are referred to 

 his annual reports for the years 1912, 1913, and 1914. 



5. Complete screenings for swine give fair returns. When mixed 

 with feed flour (Oglivie's "Noxol") in proportions of 3 to 1, the mixture 

 is worth $18.40 per ton. Had the black seeds been removed this 

 feed would undoubtedly have increased $10 per ton in v.alue. 



6. Complete screenings for dairy cattle were somewhat unpala- 

 table due to black seeds. When composing 20 per cent of the grain 

 ration, the screenings acquired a value of $34 per ton. The addition 

 of molasses makes the ration palatable but detracts from the food 

 value, making the mixture of screenings and molasses meal worth 

 only $25 per ton. This is clear evidence that the most economical way 

 of making screenings more palatable is not to add other constituents 

 but to remove the black seeds. 



Screenings, black seeds removed. — 1. In the above lamb feeding 

 experiment it is clearly proven that screenings with black seeds 

 removed are worth $10 more per ton than the complete screenings. 

 The increased palatability alone would .account for most of this 

 difference. 



Undoubtedly this would apply equally well to the feeding of 

 screenings to other classes of stock. 



Buckwheat screenings^ — In the feeding of young pigs buckwheat 

 screenings is a valuable meal, worth in the above test $27.60 per ton. 



This feed would undoubtedly have proportionate value in feeding 

 sheep and cattle. 



POULTRY. 



During the winter of 1913, the Poultry Division, Central 

 Experimental Farm, conducted experiments on the feeding value of 

 the following material supplied by the Seed Branch: (1) complete 

 screenings, (2) scalpings, (3) black seeds, (4) wild buckwheat (Poly- 

 gonum convolvulus L.), (5) lamb's quarters {Chenopodium album L.), 

 (6) wild mustard [Brassica arvensis (L) Ktze), (7) tumbling mustard 

 [Sisymbrium altissimum L.). The last four weed seeds were obtained 

 oractically pure for this work. 



