1628 FEEDS AND FEEDING 



muscles. The brain, bones and miiscles of the older animals contained 

 less water than did those of the younger subjects. 



Comparing the behavious of milk rich in carbohydrates with that of 

 milk rich in fat, the latter diminished the fixation of water in the connective 

 tissue and increased it in the muscles. 



The total ash was distributed as follows : the bones contained 65 to 

 76 per cent, and the muscles about 15 per cent. In comparison with those 

 of young pigs fed on enmlsion milk, the bones of animals fed on diafari- 

 nised milk contained the least quantity and the muscles the highest quan- 

 tity of ash. 



The muscles contained the greater part (about half the total) of the 

 nitrogen found in the body of the young pig. The fatty and connective 

 tissues contained 36 to 60 per cent, of the chemical energy, the muscles 28 

 to 41 per cent, and the bones 6 to 10 per cent. Milk having a wide nutritive 

 ratio increased the energy reserve of the connective and fatty tissues to a 

 marked degree. 



5) Analysis of the different organs gave the following results. 



The blood of the animals experimented with, particularly of those fed 

 with emulsion milk, contained less dry matter than did the blood of the 

 control animals. 



The lungs, heart, glands, bones, skin, connective and fatty tissues, 

 muscles and intestines of the older animals contained more dry matter, fat 

 and energy than did the same organs of the younger subjects. Compared 

 with milk rich in carbohydrates milk rich in fat increased the dry matter, the 

 dry matter less fat, the ash, the nitrogen and the calorific value. Milk 

 ha\dng a wide nutritive ratio increased the dry matter, the fat, and the 

 calorific value. 



The nature of the feeding had a considerable influence on the composi- 

 tion of the bones. Milk rich in fat, as compared with milk rich in carbo- 

 hydrates, increased the ash content to a very marked extent. 



6) The dry matter of the liver contained 0.16 to 0.74 per cent, of 

 glycogen ; that of the muscles 0.4 to 1 1.6 per cent, from which it is calculated 

 that the liver of the young pig contains 0.53 to 8.72 grms, the muscles 0.71 

 to 5.91 grms of glycogen. 



The writer has estimated the glycogen in the fresh liver and muscles of 

 two young pigs, each weighing 11 lbs. The animal fed on diafarinised milk 

 contained 34.2 grms, that fed on emulsion milk 13.9 grms, the liver and 

 muscles of the first thus containing 2 Y, times as much glycogen as did 

 those of the second. Hence the greater part of the glycogen is probably 

 decomposed during drying. 



7) The proportion of fat and carbohydrates in the food are held to 

 be of equal interest to the physiologist and to the practical feeder. It is 

 found that, as com.pared with food rich in fat, food rich in carbohydrates 

 stimulates an increase of the water content of the organism and has an 

 unfavourable influence On the fixation of dry matter less fat and ash. 



The mean results ootained when using two young pigs from the same 

 litter, fed side by side, one on diafarinised milk the other on emulsion milk 



