. Hog cholera, its nature and control . ilcloth. The pig is confined in the manner already de-scribed, and the site of injection is thoroughlycleansed with the scrub-brush dampened in anti-septic. If syringe and needles have not been pre-viously sterilized, they should now be thoroughlydisinfected, after which the required quantity ofserum is drawn into the syringe and injecteddeeply into the tissues. As the needle is with-drawn it is well to pinch the skin to prevent back-ward flow of serum. Massage is now applied ifrequired, the site of injection is again dampenedin antiseptic, and the pig i
. Hog cholera, its nature and control . ilcloth. The pig is confined in the manner already de-scribed, and the site of injection is thoroughlycleansed with the scrub-brush dampened in anti-septic. If syringe and needles have not been pre-viously sterilized, they should now be thoroughlydisinfected, after which the required quantity ofserum is drawn into the syringe and injecteddeeply into the tissues. As the needle is with-drawn it is well to pinch the skin to prevent back-ward flow of serum. Massage is now applied ifrequired, the site of injection is again dampenedin antiseptic, and the pig is released. Choice of the site of injection is governed bythe size, condition and intended use of the animal,by the method of confining, and by individualpreferences. All other things being equal we pre- METHODS OF USING ANTI-HOG-CHOLERA SERUM 129 fer the armpit because the skin covering it isusually clean, the serum enters the tissues freely,and with each step the animal takes, massage isautomatically applied. Very young pigs are most. Plate 20. Injecting serum behind the ear. The needle is thrust deeplyinto the loose areolar tissues, and very little force is required toexpel its contents conveniently confined for injecting in the hogs, especially pregnant sows, are almostalways injected behind the ear, because it is saferand more convenient to confine them nearly ready for market should not be in- 130 HOG CHOLERA jected in the ham, and young pigs and shoats arenot injected behind the ear. Sometimes serumis administered in the flank, or in the loose tissuesimmediately back of the elbow, but we believeneither practice has much to recommend it. Rapid and complete absorption of serum isgreatly to be desired, because it gives the highestand most prompt immunizing effect, and tends toprevent abscess formation. Some will inject nomore than 20 mils of serum in a place, believingthat a greater quantity will be absorbed butslowly, but it is the placing and distr
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