Nutrition. 



233 



From experiments made in Germany by Wolff, the follow- 

 ing table of food requirements for every 1,000 lbs. of 

 body-weight was compiled : 



Horses at light work 



„ moderate work - 



,, full work 

 Oxen at complete rest in stall 

 Oxen at moderate work 



„ full work - 

 Milch cows- 



Fattening oxen : 1st period 



2nd ,. - 



„ 3rd „ - 



Fattening sheep: 1st period 



„ 2nd „ - 



Sheep fed for wool : 



Stronger breeds 



Finer breeds 



2 ■■;£ 



rtO,S 



.2 -.■-*- 

 o o 



1 



I 3 



lbs. 

 21-0 

 22-5 



25-5 

 17-5 

 24-0 

 26-0 

 24-0 

 27-0 

 26-0 

 25-0 

 26-0 

 25-0 



20-0 



22-5 



lbs. 



9-5 

 11-2 

 13-4 



8-0 

 11-3 

 13-2 

 12-5 

 1 5-0 

 148 

 14-8 

 15-2 

 144 



lbs. 



•40 

 •60 

 •80 

 •15 



lbs. 

 11-40 

 13-60 



17-00 

 8-85 



I -30 | 13 20 

 50116 10 

 40 ' 15-40 

 50 18 00 

 70 18-50 



60 18-10 



50 18-70 



60 ! 18 50 



10-3 i -20 11-70 

 11-1 -25 113-50 



It will be observed that the quantities given in the above 

 table are of ' assimilable matter.' It is a well-known fact 

 that animals can only obtain from food a certain proportion 

 of its nourishment; neither reducing the quantity given 

 nor adding substances to the food will make them digest 

 more than a certain proportion of each proximate principle ; 

 the 17 lbs. of assimilable matter for horses in hard work 

 would probably only be extracted by the administration of 

 25 lbs. of food. Each food and each proximate principle 

 has a digestive co-efficient of its own ; and before we can 

 form any opinion of the amount of nourishment a food is 

 capable of supplying, we must apply to it the digestive 

 co-efficients which have been obtained as the result of 

 direct experimental inquiry. 



