356 SCIENTIFIC FEEDING OF ANIMALS 



coarse fodders (hay and straw), it is advisable not 

 to make use of the value number, but to deduct 

 0-58 from the starch equivalent, as calculated above 

 for each per cent of crude fibre (not the digestible, 

 be it noted) in the food. 



Chaff is treated in the same way, a deduction 

 of 0-29 being made for each i % crude fibre. With 

 green fodders the starch equivalent depends also 

 upon the amount of crude fibre ; where the amount 

 in the green fodder is 16 % and more, a deduction 

 of 0-58 starch equivalent ; whereas, if the amount 

 of crude fibre is 4 % or less, the deduction is only 0-29 

 starch equivalent. For intermediate quantities of 

 crude fibre a proportionate deduction has to be 

 made : e.g. 0-34 for each per cent crude fibre 

 in green fodder where the total is 6 %; 0-38 

 where the total is 8 %; 0-43 where it is 10 %; 

 0-48 where it is 12 %; and 0-53 where it is 



14 % 



Two typical cases are shown below. Spring 

 cereal straw contains, according to Table I, the 

 following digestible nutrients : 



ro % protein x 0*94 . . . .= 0*94 % starch equivalent 

 0-4,, fat xi'9i . 076,, 



^^;e ge fi n br eXtraC . t }39^ I -o=3^o,, 



Deduct 39 % crude fibre x 0-58 22.6 



187 % starch equivalent 



