42 



DENMARK. 



(Professor Bang's views on Hog Cholera.) 

 This disease, he said, existed in Denmark but not extensively. 



He believed in Salmon's and Smith's views and endorses 

 Welch as to the bacillus of swine plague being found in the 

 throats and nostrils of pigs and calves. 



He did not consider it necessary to slaughter adult pigs 

 which had recovered. Asked how he explained the reappear- 

 ance of the disease on farms where such sows or boars were 

 kept over, soon after young pigs were born, or when restock- 

 ing was attempted, he said " it was probably due to imperfect 

 disinfection." 



In this our experience in Canada does not coincide. It is 

 also the experience of others with whom I have discussed this 

 subject that where the intestinal ulcers have formed, complete 

 recovery very rarely does take place although cicatrization is 

 often observed. The intestinal discharges continue to be 

 more or less infective, and in the case of breeding sows, the 

 disease attacks their young pigs as soon as they are old 

 enough to root among the litter. 



The following extract from the report of the Departmental 

 Committee of the Board of Agriculture of Great Britain ap- 

 pointed to inquire into the etiology, pathology and morbid 

 anatomy of swine fever, 1895, points to this chronic infective 

 form as of frequent occurrence : u There are also, and always 

 have been, many cases of the obscure or chronic form of the 

 disease, in which the morbid changes go on slowly for many 

 weeks or .months and finally attain an excessive state of 

 development without being attended by any of the symptoms 

 which are usually accepted as diagnostic of swine fever. 



" Some very important information in regard to the obscure 

 form of swine fever was obtained by the committee by the 

 examination of swine which had been isolated for a period of 

 two months on infected premises, at the end of the time they 

 had been certified by a veterinary surgeon to be free from 



