Table of Contents 



xvn 



Pedigree 



Performance ...... 



Fundamental ideals in breed or herd improvement 



PAGES 



451-453 

 453 



454-457 



CHAPTER XX 



THE PREVENTION OF HOG DISEASES .... 458-482 



Relation of sanitation to disease .... 458462 



Disinfection of hog-houses and yards . . . 461-462 



Relation of quarantine laws to disease . . . 462-463 



Diseases of the digestive system .... 463-468 



Stomatitis or sore mouth ..... 463-466 



G astro-enteritis or inflammation of stomach and 



intestines 466-467 



Diarrhea or scours in pigs 467-468 



Diseases of the respiratory organs .... 468-469 



Diseases of the nervous system 470-471 



Partial or complete paralysis of the posterior 



portion of the body 470-471 



Spasm of the diaphragm or thumps . . .471 



Castration 471-473 



Parasites of hogs 473-476 



Infectious diseases ....... 477-482 



Hog cholera 477-481 



Tuberculosis 481-482 



