• Holstein (Continued from Pago 8) After noon, the tour stopped at the 600 acic father sons partner ship of Arthur, Wayne and Harold Lesher The 90 milk cows arc housed in a complete ly new 130'x80’ fioestall bain with a 100’ bunk feeder and 110 stalls The old bam is used for the Jieifeis and young stock A li* quid manure system is used The storage capacity in the sys tern is 20,000 gal and is emptied eveiy six weeks The cows were repoited doing beltei in the new IVz year old setup with pi oduction on several cows go mg ovei 100 lbs of milk a clay to 130 pounds The last stop was the Wer nersville State Hospital Faim These 83 milk cows have a herd average of 15,825 pounds of milk and 602 lbs of buterfat, third high in Berks County A part of the hospital institute was also toured And finally, the tour ended at 5 p.m where it had started. And .as this reporter left the park ing lot, the sun broke through the clouds to send local dairy men back to their own milking at home with about as much sunshine as they had seen all day •Jf Farm Management Profit-Tip from Organic Plant Food anhydrous ammonia plow-down Most concentrated form of nitrogen Anhydrous ammonia (NH 3 ) is the most concentrated form of nitrogen fertilizer 82% N. Other nitrogen fertilizers of loweranalysis are made from NH 3 . Compare your cost per acre using NH 3 with any other source of nitrogen, and your savings are evi dent. It’sthe most econom ical method of application per pound of nitrogen. Anhydrous ammonia piowdown facts • Piowdown application of anhydrous ammonia is an effective way to reduce spring field work. First, bulk spread phosphorus, potash. Then turn them both Organic Plant Food Company Lancaster, Pennsylvania SEE SILL BRUBAKER ' ON THE HOLSTEIN TOUR are (left Clarence Stauffer, Association President, to right) Mr .and Mrs. Clarence H. Martin, The cow in the Martin herd is Shirley Cacoosing Farm, Sinking Spring R 6; Pabst Bell, classified Very Good with James Haldeman, Berks County agent; 17,000 pounds of milk and 740 lbs of butter- Paul Zimmerman, tour chairman and fat. - L. F. Photo How to profit from ORGANIC PLANT FOOD CO. P. O. Box 132 • Grofftown Road • Lancaster, Penna. 17604 • Nitrogen applied by an hydrous ammonia plow down requires fewer trips over the field. Soil com paction is reduced. Anhydrous ammonia plowdown is an effective farm management proce dure. Let us help you work it into your total soil fertility program. Call us, we’ll come to see you. Anhydrous Ammonia Phone 392-4963 Lancaster Farming, Saturday. April 5, 1909 9 under as you plowdown an hydrous ammonia for your source of nitrogen. This provides nitrogen, phos phorus, and potash at plow depth for a steady, season long source of nutrients. • Reduce your costs by do ing two jobs at once plowing and getting your nitrogen in the soil. Heat-Treating Eggs Halts Chronic Respiratory Disease \ special heat tieatment of eggs beloie incubation slops egg tiansnnssion ol chiomc icspna loij disease in chickens The niaioi infective agent of this disease is Ah coplaMiia gal lisepticum, a vei\ small bactei uim Hons may canv Ah cop lasnia 01 nanisms in the lepioduc live tiact, and egg tiansmission is a maioi i onto ol M\coplasma infection Since the eaily 1960’s ie scaicheis have had some suc cess in i educing egg tiansmis sion by tiealments applied be foie incubation Most lecentlv, clipping eggs in antibiotics pair ed with othei techniques, pioved helpful in cleaning up Mycop lasma infection fiom most bioil ci bleeding flocks Mycoplasma eiadication ic mams to be completed, how ever, in ceitam poultiy lines. While dipping could possibly complete the eiadication pio gram, the method has diaw backs Some Mycoplasma slip through, and special matenal and equipment are needed These drawbacks can be over- come, it now appears, with a new eiadication method that parallels pasteui ization—heating eggs to a predeteimined, mod el ately high tempeiatuie ARS veteunanan H W Yodei, who devised the new method, says that it depends foi success on achieving an intei nal egg tem peiature of 114° F undei a specified set of conditions The method was evaluated at the ARS Southeast Poultiy Re seaich Laboiatoiy, Athens, Ga, when tieated eggs had been in cubated for 14 days a good time to check for egg-boine in fection Results showed no Mycoplasma suivival in eggs that had been expeiimentally infected Yodei calls 114° the cutieal tempeiatuie because it kills the Mycoplasma and consistently keeps hatch of treated eggs with in 8 to 10 peicent of noimal. Tempeiatuies highei than 114°, while eliminating Mycoplasma just as completely ieduce chick hatch moie diastically The optimum tempeiatuie was achieved m piehminaiy expeu ments by heating a batch of 40 eggs in a small mcubatoi foi 6 houis to eiadicate Mycoplasma. Yodei found, howevei, that each size of load poses a ditfej;- ent pioblem The hugest load he has checked was 2,000 eggs— close to a commeicially feasible batch Foi this load, the incubator must mn 10 to 12 houis foi to leach 114°, no fuithei hold ing at this tempeiatuie is need ed Hot-iunning incubatois should be adjusted to achiexe the desired tempeiatuie i® the 10 to 12 hour lange, howecer. Shoitei tieatment is ineffective; longei tieatment incieases ein biyo damage Since standaid incubatois and equipment aie used foi the tieatment, the only special le quuement is a good meiciuy theimometei The majoi cost is the reduced hatch, which at the level mcuiied with 114- is reasonable for the pumaiy hieedei, who does the basic bleeding foi the poultiy indus try ‘ Foi success,” Yodei sajs, “the bleeder must determine the temperatme precisely The best way to get a good tempeia tuie is to put the theimometer in a sandfilled jai oi bottle and place it with the eggs I’d buy tlvee theimometers and test them togethei before use If one reading disagreed, I’d still have two otheis to give me assuiance the job is being done i ight ”