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Show VACCINATION OF PIGS PAYS WELL North Dakota Expert Says It Is Good Business. Manj rarmers are wondering wheth -I twg vaccinal ioD Is necessary or worth the expense. Ir. G. S. Weaver, extension specialist spe-cialist in animal disease hi South Dakota Da-kota state college., believes that it Is. g.iori business management to vaccinate vac-cinate the pigs. Considering itie numbci of out hreaki of cholera at the present time, there seems to tie plenty ol chance tor exposure, he says. Probably fewei older hogs are now immune than for several years.- which would mean a miii-j serious outbreak il the disease nets a real start. The best time to vaccinate is when rhe pigs average about 40 pounds in weight, or when they are about e' bt weeks olu. It costs less to vac '-'ate pigs of this size tnan it does older hogs, and the pigs are easiei handled. han-dled. They are just about the right age to insure a permanent immunity, n case a pig dies after treatment the 'ss is not great at this age. Successful vaccination depends on flie tlirifiiness of the pigs, tin etii cieniy of the operator and the san) ti.ry conditions, figs that are affected affect-ed with "necro" or infested with worms will not gel along as well aftei vaccination i.s thrifty pigs. The man who puts in the serum should kno'.v his 'mslness and as a general rule the vete-inarian Is iest qualified I'igs thai are kept in dirty pens and lots 'anii't expected to do as well after aft-er s ccination since unsanitary con ditions help thetn lose their resistance. A thrifty pig properly vaccinated will do well after vaccination It kept in a clean pen and fed on a light diet- |