| Show IX I Cholera Anti I I Serum Improving ing I Blood flood Cells Are Removed a and d Clear Cleav Liquid Left for Serum Prepared by th the th United Department or of I Constant Improvement vem nt In the process of ot preparing hog cholera serum has resulted In a ft high standard of ot quality for this biological product In the United States Among Important developments de of recent years cars are ure the clarification of ot serum concentration of ot the serum Into smaller volume and more recently an Improved method of ot pasteurization ion in which all containers are arc completely submerged ed In a water vater bath and the serum I Is n while being IH heated A description of ot present pres pres- ent exit methods of serum production as I conducted under federal licenses appears ap ap- ap pears In z n scientific paper presented recently by hJ Dr D D. I I. I Sk dmore at nt a conference of farm bureau members veterinarians and live hive stock sanitary officials Doctor Dottor Skidmore Is the official om ofil cial of the United States State Department of Agriculture In charge of the admin of It the federal virus serum um toxin law which seeks to Insure a high quality of veterinary biological products product Result of Clarification The process s of clarification Doctor Skidmore stated removes remOTes the blood cells cella which ha have hae e no protective e value and leaves len a clear liquid which when preserved and tested becomes the product used In Immunizing hogs bogs a against cholera The veterinarian finds It easier to handle hundle the concentrated clear product and that the clear serum Is less likely to clog the syringe The serum on n the market he explained has about 80 SO per cent of the volume of the serum erum prepared from the same amount of ot blood This means menns that four bottles of the clear serum will Immunize as many pigs as five bottles of the unconcentrated product The cost of bo bottling packIng packIng pack Ing and shipping a given number of doses Is consequently 20 O percent cent Ie less L 6 L per man Dun lor cne we more product The most Important advantage antage of ol the clear serum Is s that pasteurization destroys any disease producing bacteria bacteria bac bac- teria terla Doctor Skidmore declared At the same time this pasteurizing process by destroying other bacteria Improves the keeping quality Pasteurization Pas also enables the manufacturer manufacturer to prepare an adequate reserve supply of serum without fear that his supply may be of questionable purity because of outbreaks of live stock diseases dis eases In the territory from which the serum animals were procured This Is a protection to the live liTe stock raisers generally as well as ns to thema the ma manufacturer a a Results Satisfactory hog cholera serum Is prepared In large quantities and Is used b by many Individuals under varying condl condi But there Is no other biological product Doctor Skidmore stated which is used with such uniformly satisfactory results In a few cases reported as unsatisfactory the actual cause usually was traceable to un wi- wi the animals with serum or orto orto orto to some other factor rather than to tonny any lack lock of ot serum potency In the thelast thelast thelast last calendar year manufacturers produced produced pro pro- enough serum to Immunize more than ho hogs s. s or more than 29 per cent of or the estimated pig crop |
