732 Starch Equivalents of Feeding Stuffs, [dec, 



Use of Starch Equivalents in Compounding Rations. — 

 The next point to consider is whether the method of using 

 starch equivalents to express the value of the feeding stuffs 

 makes it easier to arrange a suitable ration for any class of 

 stock. As is well known, certain feeding standards have 

 been fixed for the different kinds of domestic animals, and 

 although these standards are not entirely above criticism 

 they nevertheless afford the most reliable information which is 

 available at the present time. Kellner has ascertained the 

 starch equivalents of foods which are required by animals 

 under certain conditions, and in the table given below these 

 figures are given, together with those which had, in the main, 

 been previously regarded as standards: — 



Per 1,000 lb. Live Weight Per Day.* 











Digestible Nutri 



ENTS. 









Dry 



























Animal. 





Matter 











Nitrogen 





in 

 Ration. 



Protein. 



Starch 

 equi- 

 valent. 



Crude 

 Protein. 



Fat. 



Free 

 Extract 

 and Crude 

 Fibre. 







lb. 



lb. 



lb, 



lb. 



lb. 



lb. 



Ox (full grown) 





15—21 



o'6— o'8 



6'o 



07 



O'l 



7'5— 9'5 



Fattening bullock 





24—32 



1 '5— 1"7 



12-5—14-5 



1-8—2-2 



o7 



13*0 — i6'o 



Cow giving 10 lb. milk per 1 



,000 









lb. live weight 





22 — 27 



fo— f 3 



7'8- 8-3 



1-2— T -6 



o-3 



9'8 — io'2 



Cow giving 20 lb. milk 



per 















t,ooo lb. live weight 





25—29 



i-6-i-9 



9'8 — if 2 



1-9—2 3 



°'5 



1 1 -5-12-8 



Cow giving 30 lb. milk 



per 









1,000 lb. live weight 

 Cow giving 40 lb. milk 





27—33 



2'2— 2*5 



11-8—13-9 



2-6-3-0 



o-6 



12-9—147 



per 









1,000 lb. live weight 





27—34 



2-8—3-2 



13-9—16-6 



3-3-3-8 



o-8 



*3'9— 15-3 



Horse, light work 





18-23 



IO 



9'2 



fa 



0-4 



9-8 



,, heavy „ 





23—28 



2'0 



1.5 '9 



2*2 



o-8 



i37 



Young fattening pigs — 











2 — 3 months old 





44 



6-2 



33-8 



6-6 



I'O 



. 28-0 



5-6 „ „ .... - 

 Full-grown fattening pigs — 





32 



3'5 



26-5 



4 '4 



0-7 



22'5 

















1st period 





33—37 



3*o 



27*5 



3'9 



0-7' 



26*0 



2nd ,, 





28—33 



2-8 



26-1 



3-3 



0-5 



25-0 



3rd ,, 





24—28 



2 - 0 



19-8 



2-6 



o'4 



I 9 -0 



Fattening sheep, full grown 





24—32 



i-6 



*4*S 



*'9 



07 



i6'o 



Considering the above table of feeding standards, it will 

 be noticed that one of the columns shows the amount of 

 digestible true protein that is necessary for each animal, and 

 that another column contains the starch equivalents. 



It is very important indeed that sufficient true protein 

 (albuminoids) should be given, for this material plays a 

 part in the animal economy that no other food nutrient is 



* The above table is taken from Kellner's standards ; a full list appears in the 

 " Scientific Feeding of Animals." 



