Live Stock Breeders' Association. 



225 



growing pig will depend upon the purpose for which he is to be 

 used, but up to this time the method should be essentially the same 

 in all cases. The method of handling the pig now will depend upon 

 whether or not he is to be developed for breeding purposes or for 

 market, and if for market, whether or not by a long or a short 

 feeding period. 



If for breeding purposes, then, the pig should be fed to develop 

 bone, muscle and vital organs, and to do this the ration should be 

 largely of proteid feeds. Professor Henry found that hogs fed on 

 a protein-rich ration shrank in dressing 21.7 per cent., as against 

 20.7 per cent, in the case of hogs fed a ration poorer in protein, 

 the difference being due to the favorable development of vital or- 

 gans in the hog fed the protein-rich ration. The weights of the 

 blood and of the internal organs in the case of the hogs receiving 

 an excess of protein were, blood, 53 ounces ; liver, 40 ounces ; kid- 

 neys, 6.5 ounces; while in the case of the hogs receiving an excess 

 of carbo-hydrates the weights were, respectively, 39.5 ounces, 30 

 ounces, and 4.7 ounces. The breaking strength of the thigh bones 

 stood in the ratio of 430 to 356. The conclusion, then, is that breed- 



Fig. 3. An "A" individual hog cot used by Missouri Experiment Station. 

 A-15 



