1922.] Notes on Feeding Stuffs for Afril. 79 



FARM VALUES. 





— 



Value por 

 Ton on 

 Farm. 



£ s. 



Mannrial 

 Value per 

 Ton. 



£ s. 



Food 

 Value jjer 

 Ton. 



£ s. 



S.E. 

 per 

 100 

 llw. 



Value 

 per 



8. 



Mark.'t 

 Value pel 

 lb. S.B. 



d. 









2 9 



5 



2 4 



18 



2/5 



1-30 



Swedes 







1 



3 



17 



7 



2/5 



1-30 



Mangolds 







17 



4 



13 



6 



2/5 



1 -30 



G()0(l Meadow Hay 







6 9 



18 



5 11 



31 



3/7 

 3/7 



1-92 



(iood Oat Straw - 







3 11 



10 



3 1 



17 



1 -92 



Good Clover Ilav 









6 19 



1 4 



5 15 



32 



3/7 



1 •1(2 



Vetch and Oat Silage - 







2 10 



8 



2 2 



14 



3/0 



i-»;i 



KOTK. — The prices quoted above represent the average prices at which actual wholesale 

 traasactions liave taken place in London, unless otherwise stated, and rel'cr to the price ex mill or 

 store. The prices were current at the end ot, February and are, as a nile, considerably lower than 

 the prices at local country mai-kets, the difference being due to carriage and dealers' comnjission. 

 Buyers can, however, easily compare the relative prices of the feeding stufYs on otTei- at their local 

 market by the method o£ calculation used in these notes. Thus, suppose palm kernel cake is oflfereil 

 locally at £10 per ton. Its manurial value is £ I 9s. per ton. The food value per ton is therefore 

 £8^1 1«. per ton. Dividing this figure by l->, the starch equivalent of palm kernel cake as given in 

 the>table. the cost per unit of starch equivalent is 2s. 3d. Dividing tiiis again by 22-4. the number 

 of pounds of starch equivalent in 1 unit, the cost per lb. of starch etjuivalent is l"21d. A similar 

 calculation will show the relative cost per lb. of starch equivalent of other feeding stulTs on the same 

 local market. From the results of such calculations a buyer can determine which feeding stuff gives 

 him the best va'ue'at the prices quoted on his own market. 



are absent are all fats and oils of vegetable or plant origin, 

 polished rice, tinned meats, and kilned oatmeal and peameal. 

 (2) Fresh animal meat, green foods (particularly cabbage), milk, 

 and root vegetables contain all three " vitamines." Peas, 

 beans, and cereal grains, after germination, also contain these 

 vitamines. 



Oils of animal origin, particularly butter and codliver oil, are 

 rich in Fat Soluble A (the absence of which causes rickets). 

 Eggs, dried yeast, wheat germ, linseed and millet, are all rich 

 in Water Soluble B (the absence of which causes diseases such 

 as pellagra and beri-beri). Raw cabbage and fresh fruit juices 'dvo 

 especially rich in the Water Soluble C vitamine (absence of 

 which causes scurvy). 



What is the bearing of these facts on the normal practice of 

 feeding farm animals? In most cases farm animals get at 

 some time or other fresh green foods, which are fairly rich in 

 vitamines. In such cases the inference is obvious : there is no 

 need to provide specially for the animal by supplying proprie- 

 tary foods guaranteed rich in vitamines. The only case where 

 there is perhaps a possibility of deficiency of vitamines is in the 

 case of sty-fed pigs receiving cereal offals without any addition 

 of green food. In such cases the writer always advocates the 

 addition of a small amount of codliver oil to the diet. 



One final point : the amount of vitamine needed is t^xtremely 

 small, and is likely to be provided in excess by any normal 

 dietary. 



