480 EXPERIMENT STATION RECORD. 



treatment, inoluclinff the use of bof; cholera serum and virus autl the results that 

 have be(ni obtained in Wisconsin. 



Hog cholera and its prevention by the use of antihog-cholera serum, R. U. 

 Fi.owK (/>'»/. A'. V. Dcpt. Ayr., ,W iHU'i), A'o. 7. ;>/>. 2.9, fuj-s. /.7).— An account of 

 hog cholera, its nature, prevention and methods of eradication. The manufac- 

 ture of antihog-cbolera serum is described and the bulletin is well illustrated. 



Basis of the serum treatment for hog cholera, C. F. Ia'nch (Amer. Jour. 

 Vet. Med., 9 (191/,), Nos. 7, pp. 1/73-1,80; 8, pp. 580-583).— A brief survey of the 

 principles underlying Inununily and an account of the use of the serum and 

 serum virus methods of treating bog cliolora. 



Environment as a factor in complications following vaccination for the 

 prevention of hog cholera, S. Siikldon (Amer. Jour. Vet. Med., 9 (1911,), No. 

 7. pp. 1,89, 1,90). — "After a herd has been pi'operly vaccinatefl, it should be 

 placed in a paddock or pasture where mudholes and stagnant pools are 

 absent. . . . We feel that this is a very important matter and should be in- 

 sisted upon at all times." 



Conditions in which antihog-cholera serum should not be used, O. E. Troy 

 (A)ucr. Jour. Vet. Med., 9 (1911,), No. 7, pp. 1,80, //8/).— The tenor of this paper 

 is that a diagnosis of hog cholera must be iwsitively made before serum or 

 similar treatment is employed. The serum virus method should only be used 

 under the proper auspices. 



" Unless there is immediate danger of infection, jiregnant sows should not 

 be immunized, particularly with the simultaneous method, as the inmiunizing 

 process may produce abortion. Careful handling and the use of serum alone 

 minimizes this danger. Swine that are to be introduced to noninfected premises 

 Avhere there are noninfected. susceptible hogs, should not be given the simul- 

 taneous treatment within 30 days of their introduction, because such im- 

 munized bogs may be virus carriers. Herds to which any new stock is being 

 added should, as a rule, be protected unless careful quarantine of the new 

 stock is observed. Serum alone has proved impractical on infected farms where 

 conditions do not permit of thorough cleaning and disinfection, and in feed lots 

 where new hogs are periodically added." 



Some failures for which serum has been wrongly blamed, C. H. Bugbee 

 (.Amer. Jour. Vet. Med., 9 (1911,), No. 7, pp. 1,81,-1,86). — Increased caution in 

 operation and in administering bog-cholera serum is deemed necessary. Laxity 

 in this regard accounts for much of the failures in the use of antihog-cholera 

 serum. 



The proper time to vaccinate hogs, R. A. Branson (Amer. Jour. Vet. Med., 

 9 (1911,), No. 9, pp. 651, 652). — After giving his experiences in immunizing swine, 

 the author concludes that "the proper time to vaccinate is when the pig is 

 from six to eight weeks of age." 



Care of the herd after vaccination, D. S. Burcham (Amer. Jour. Vet. Jfed., 

 9 (1911,). No. 7, pp. 1,83, 1,81,). — A discussion with recommendations. 



Spreading disease among coyotes, M. A. Cromwell (Breeder's Gaz., 67 

 (1915), No. 3, pp. 110, 111). — It is stated that the inoculation of young coyotes 

 with sarcoptic mange mites and turning them loose at Creat Falls. Mont., to 

 infect other wild coyotes has succeeded in spreading the disease. The coyotes 

 of that locality are said to be dying by the hundreds and in fact becoming 

 nearly extinct in some places. The author reports that sheepmen at a I'ecent 

 meeting favored the removal of the bounty from coyotes, especially those that 

 are infivtetl with mange, and of putting more efforts and money into the 

 disease work. 



Tuberculosis in poultry, C. II. IIiogins (Canada Expt. Farms Rpts. 1913, pp. 

 6S7-6S9). — A brief popular account. 



