. Special pathology and therapeutics of the diseases of domestic animals. Veterinary medicine. Occurrence. Etiology. 3g7 â quarter of the year. In the French Army in the years 1900 and 1901, 18,165 cases with 283 deaths occurred among about 100,000 Etiology. Streptococci (Streptococcus equi Schiitz) are in- variably present in the lymph glands and in the nasal discharge of affected horses, formed by cocci arranged in the manner of a string of pearls; these are not always uniform in size and are frequently split transversely. The rounded chains consist of 50 to 60, and even more segmen
. Special pathology and therapeutics of the diseases of domestic animals. Veterinary medicine. Occurrence. Etiology. 3g7 â quarter of the year. In the French Army in the years 1900 and 1901, 18,165 cases with 283 deaths occurred among about 100,000 Etiology. Streptococci (Streptococcus equi Schiitz) are in- variably present in the lymph glands and in the nasal discharge of affected horses, formed by cocci arranged in the manner of a string of pearls; these are not always uniform in size and are frequently split transversely. The rounded chains consist of 50 to 60, and even more segments, but much shorter chains, and also diplococci and single cocci may occur. They stain well with aqueous aniline dyes, as well as by Gram's method (Fia- 61). ^ ^' Cultivation. The streptococcus equi may be cultivated aerobically and anaerobically, at room as well as body temperature. On gelatin very fine white points develop along the inoculation streak, on agar the colonies have hardly the size of a poppy seed; they are grayish-white, not transparent, not coalescing, and closely adhering to the medium. On coagulated blood serum glassy transparent, yellowish-gray droplets develop, which later may coalesce forming a tenacious layer. In the water of con- densation a fine precipitation results, which consists of very long chains, In bouillon the organisms grow in fine flakes, which accumulate on the bottom of the tube and over which the fluid remains clear; the growth is favored by the addi- Fig. 61. streptooooous equi. tion of blood serum. No growth results on ^"s from gland; fuchsin stain- potatoes. Milk is coagulated; dextrose is '"^⢠not fermented. The relation of streptococci from different derivations to each other has not yet been sufficiently established. While Sehiitz considers his streptococcus as an independent species, Foth believed it identical with Sehiitz's diplococcus of influenza, and also with the streptococcus pyogenus of inan. Ligni6res considers
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectveterin, bookyear1912
