DITISIOy OF CIJEMISTE7 111 



SESSIONAL PAPER No. 16 



Cotion-serd Meal, Lahoratory Nos. 11/664, 16505, IG-IOG.— Tins product as foui:d 

 on the market, is very A'ariable. The highest grades contain in the neighbourhood of 40 

 per cent protein and as much as 13 per cent oil. Many grades may fall considerably 

 below these figures and may also contain an excess of fibre, and thus it is evident that 

 cotton-seed meal should only be purchased on guaranteed analysis. 



Samjile No. 14664, Owl Brand, was bonghl locally ut Ottawa and was manufactured 

 at Memphis, Teini., U.S.A. Nos. 16505, 10506, forwarded from Truro, N.S., were 

 from Jacksonville and Toledo respectively. All three are genuine and 'of good 

 quality, but No. 16506, by reason of its somewhat higher protein content is tl^e best 

 of the series. 



Distillers' Grains, Laboratory Nos. UfSSl/, 14670, 15022, 16253. — These dried grains 

 from the distillery are stated to result from the use of malted barley, rye and corn 

 in equal proportions. This is a product of very considerable feeding value, contain- 

 ing nearly 20 per cent of protein and from 4 to 6 per cent of oil or fat. The fibre 

 content is rather high when compared with concentrates such as oil cake and cotton 

 seed meal. The samples reported on were di-awn at intervals of several months 

 apart, and, therefore, the close accord of the analyses would indicate a. very fair 

 xmiformity in the composition of this product throughout the year. 



Lahoratory No. 16968.— -Jiesjyectmg this sample the manufacturers write ' In the 

 process of drying out ordinary mashes, containing corn, rye, barley, malt and oa.ts, 

 the 'slop', as it leaves the still, is run over a strainer and hitherto only the part which 

 did not go through has been saved. That which passed through has been allowed to 

 run off without any use being made of it. It is this ' thin slop ' dried that we now 

 send you a sample of, to ascertain its feeding value.' It would ai">poar to be an 

 excellent feeding stuff, containing between 17 and 18 per cent protein and between 9 and 

 10 per cent fat, with a low fibre content, 5 per cent. In all probability it has a high 

 digestibility, but we cannot speak as to its palatability or keeping qualities. 



In addition to the tabulated data, this dried distillery slop was found to contain 

 3-37 per cent reducing sugars and -98 per cent non-reducing sugars. It had an 

 acidity equivalent to 9-8 per cent in terms of lactic acid. 



Brewers' Grains, Lahoratory No. 14663. — This was purchased from tlie Farmer's 

 Feed Co., Toronto. 



This sample conforms to the standard or average for dried brewers' grains. It 

 is considered a valuable feeding stuff in the ration for dairy cows, chiefly in supply- 

 ing i)rotein in a digestible form.- 



Oil CoJre, Lahoratory No. 14662. — This is evidently manufactured by the new 

 process, which means that a larger proportion of the oil is extracted from the flax 

 seed, leaving the cake poorer in this constituent, than by the old process. The average 

 protein and fat content for the new process meal would be 33-0 per cent and 3 per cent 

 respectively, and for the old process 28-1 to 30-0 protein and 9-0 to 10-0 per cent oil. 



Oil cake is a highly concentrated feeding stufl", presenting its protein ;-<nd oil 

 in readily digestible forms. When fed judiciously it can be employed profiiably, 

 b(jth in milk and beef production. 



Gluten Meal, Lahoratory No. 14665. — The product of the Edwardsburg Starch 

 Company, Cardinal, Ont., is in all essential features similar in composition to samples 

 of gluten meal from this company analyzed by us in recent years. The protein 

 content is very satisfactory, but the meal does not contain as much oil as in the 

 product put out some years ago. 



This by-product, fed with other grain feeds, and in judicious quantities, has a 

 high nutritive value, more especially for increasing the digestable protein in the 

 ration. -" 



