. Common diseases of farm animals. Veterinary medicine. CHAPTER XXVIII INFECTIOUS DISEASES COMMON TO THE DIFFERENT SPECIES OF DOMESTIC ANIMALS Septicaemia and Pyaemia.—The term commonly used in speaking of simple septicaemia and pyaomia is blood poisoning. These infections diseases are caused by several different species of bacteria that gain entrance to the tissnes by way of wounds. The bacteria that cause pyaemia are transferred by the blood stream to different organs and prodnce nniltiple abscesses. Tn septicaemia, the bacteria may occur in immense numbers in. Fig. 97.—Stap/iyluco^cus piiog
. Common diseases of farm animals. Veterinary medicine. CHAPTER XXVIII INFECTIOUS DISEASES COMMON TO THE DIFFERENT SPECIES OF DOMESTIC ANIMALS Septicaemia and Pyaemia.—The term commonly used in speaking of simple septicaemia and pyaomia is blood poisoning. These infections diseases are caused by several different species of bacteria that gain entrance to the tissnes by way of wounds. The bacteria that cause pyaemia are transferred by the blood stream to different organs and prodnce nniltiple abscesses. Tn septicaemia, the bacteria may occur in immense numbers in. Fig. 97.—Stap/iyluco^cus piiogenes. Fig. 98.—Streptococcus pyogenes. the blood and produce a general infection of the tissues, causing a parboiled appearance of the liver, heart, voluntary muscles and kidneys, and enlargement of the spleen. The two forms of infec- tion are often present at the same time. The forms of bacteria that may cause blood poisoning are the Staphylococcus pyogenes aureus and albus (Fig. 97), Strep- tococcus pyogenes (Fig. 9S), BarUlus pyocyaneus. Bacillus coli communis, and the bacillus of malignant oedema (Figs. 99 and 100). The latter is included with the bacteria that produce blood poisoning because it is a frequent cause of wound septicaemia. Subcutaneous, punctured, lacerated, contused and deep wounds without suitable drainage are the most suitable for the develop- 293. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Craig, Robert Alexander, 1872-. Philadelphia London, J. B. Lippincott company
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