. Special pathology and therapeutics of the diseases of domestic animals. Veterinary medicine. Calf Diphtheria. 419 Simultaneous inoculations with serum of highly immunized sheep (4 ee.), and with virulent blood (2 cc.), gave very favorable results in a herd of 295 merino sheep. A mixture of serum and virus (2:1) is also suitable for immunization. Theiler observed that in serial inoculations of sheep the virulence diminishes gradually and finally from the tenth operation, and from then on, a harmless vaccine is obtained. Literature. SpreuH, J. of comp. Path., 1905, XVIII, 321.—Paine, Ibid., 19
. Special pathology and therapeutics of the diseases of domestic animals. Veterinary medicine. Calf Diphtheria. 419 Simultaneous inoculations with serum of highly immunized sheep (4 ee.), and with virulent blood (2 cc.), gave very favorable results in a herd of 295 merino sheep. A mixture of serum and virus (2:1) is also suitable for immunization. Theiler observed that in serial inoculations of sheep the virulence diminishes gradually and finally from the tenth operation, and from then on, a harmless vaccine is obtained. Literature. SpreuH, J. of comp. Path., 1905, XVIII, 321.—Paine, Ibid., 1906, XIX, 5.—Theiler, Schw. A., 1895, XXXVII, 1: Bull. P., 1905, III, 617; Z. f. Tm. 1907, XI, 301. ' 4. Calf Diphtheria. Diphtheria vitulorum. {Angina diphtheritica vitulorum.) Calf diphtheria is an acute infectious disease of sucking calves, in the course of which croupous diphtheritic pseudo- memhranes form on the mucous membrane of the mouth and the pharynx, and which, as a result of a general septic infec- tion usually results in death. The causative factor of the dis- ease is the bacillus necrophorus, which was closely described by Bang. History. The disease was first described in 1877 by Dammann, who observed it in enzootic extension in two consecutive years on an estate near the Bast Sea. He established its contagious and transmissible nature and considered it identical with diphtheria of man. Later Blazekovic and VoUers observed similar affections, while Loffler (1884) proved by histological examinations that the affection differed from human diphtheria, and was probably caused by long rods, which were present at the border of the necrotic tissue. Later Bang (1890) estab- lished the identity of the Lofflier's bacillus with his bacillus necrophorus. Occurrence. According to the observations made up to the present time the disease occurs but rarely; in some localities however it occurs as a stable disease among the sucking calves and causes by its malignant course mat
Size: 1612px × 1549px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectveterin, bookyear1912