528 



SWINE IN AMERICA 



The gains made by the Razor-Backs were extremely vari- 

 able, and a satisfactory gain by an individual in one week 

 would be offset by no gain in the preceding and succeed- 

 ing weeks. This was probably due to the intermittent 

 opportunities offered to the hogs in the wild state for 

 obtaining their food, as the Razor-Backs would gorge 

 themselves and then eat sparingly for some time, when 

 thev would again devour all tliey could contain. Tlie 

 experiment showed that it cost one-half cent per pound 

 more to produce gain with Razor-Backs than with cross- 

 breds. The Razor-Backs were not able to thrive on 

 corn or other concentrated rations and required con- 

 siderably more bulky food and pasturage. 



In another experiment an interesting comparison was 

 made between Razor-Backs and Razor-Back-cross-breds 



