FATTENING OF GROWN ; ANIMALS 261 



found that when the rations contained 16.5, 18.9, 

 and 21-3 kg. digestible nitrogen-free substances, 

 with in each case 3-5 kg. of digestible protein, the 

 daily increase in weight was 3-557, 3*763, and 

 2789 kg. respectively. In another series of experi- 

 ments, also with sheep, in which 5-2 kg. digestible 

 crude protein was combined with 18-1, 20-7 or 

 23-3 kg. of nitrogen-free extract substances, the 

 gains in weight were 4-062, 3-873, and 3-695 kg. 

 all being calculated per 1000 kg. live weight per 

 day. Even when, along with large quantities of 

 nitrogen-free extract, the amount of crude protein 

 was increased, the gain in weight was less than with 

 moderate rations. 



With fattening oxen a very satisfactory daily 

 gain of 2-35 kg. was obtained when only 17 kg. 

 protein and 10-6 kg. digestible non-nitrogenous 

 material, which altogether had the starch equiva- 

 lent of 10 kg., were fed. Overfeeding should there- 

 fore be avoided. 



(i) The fattening of grown ruminants. 



In the fattening of full-grown cattle it may be 

 taken that, exclusive of the concentrated food and 

 of roots, about 10-15 Ibs. of coarse fodder per 

 1000 Ibs. live weight should be given. Such a 

 ration would contain 25-30 Ibs. of dry matter, of 

 which the digestible constituents would be at 

 most 1-6 Ibs. protein, 07 Ib. fat, and 16-0 Ibs. 



