. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. Photograph 12.—Six-weeks-old Chicks Exposed to Pulloruni Infection When 12 Hours Old Weights: No. 1, 115 grams; No. 2, 488 grams; No. i, 193 grams. Pullorum disease has an influence on the rate, uniformity, and amount of growth. Refer to question 31. 32.—Does the presence of the disease affect the salability of eggs and stock? Yes. The public has been and is being educated to buy only pullo- rum disease-free stock. A buyer who has had the unfortunate experience of buying and losing infected chicks will av
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. Photograph 12.—Six-weeks-old Chicks Exposed to Pulloruni Infection When 12 Hours Old Weights: No. 1, 115 grams; No. 2, 488 grams; No. i, 193 grams. Pullorum disease has an influence on the rate, uniformity, and amount of growth. Refer to question 31. 32.—Does the presence of the disease affect the salability of eggs and stock? Yes. The public has been and is being educated to buy only pullo- rum disease-free stock. A buyer who has had the unfortunate experience of buying and losing infected chicks will avoid repeating that experience if at all possible. A poultryman who has spent several years in developing a pullorum disease-free flock of good breeding, and then unthinkingly or unknowingly in- troduces infection, will suffer a great loss not only through the cost of eradicating the disease, but also from reduced sales. Control and Eradication of the Disease 33.—Can the disease be eliminated by culling birds that lack vigor and vitality? No. "Carriers" of the disease are not always the poorest individ- uals in the flock. Apparently normal, well-developed birds may be infected with the disease. 34.—Is incubator disinfection effective in eradicating the disease? Incubator disinfection, while partially effective in decreasing the spread of the disease in the incubator, should not be encouraged as a means of controlling or eradicating the disease because it is unable to destroy the organisms in the live chick. Infected live chicks are spreaders of the disease, and complete control or eradication requires the elimination of the spreader. Therefore, poultrymen who have outlined an incubator disinfecting program with the intention of eradicating this disease, can expect but one result, which is failure in Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance
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