Read e-book online African Swine Fever Virus: Bluetongue Virus PDF

By William R. Hess, Peter G. Howell, Daniel W. Verwoerd

ISBN-10: 3709139872

ISBN-13: 9783709139875

ISBN-10: 3709139899

ISBN-13: 9783709139899

Bluetongue might be defined as an acute insect borne affliction of ruminants, manifested clinically in sheep by way of a catarrhal irritation of the mucous mem­ branes of the digestive and respiration structures and linked to degenerative alterations within the skeletal musculature. The profound emaciation and weak point which persist with the intense disorder are chargeable for a prolonged convalescence and for severe fiscal losses as a result of lowered productiveness. II. historic in the course of the early colonisation of Africa, vulnerable Merino and different eu breeds of sheep have been brought into the Cape, initially by means of the Dutch East India corporation among 1652 and 1785 and back later in 1870. A document of the farm animals and Sheep illnesses fee (1876) files the looks of a major febrile disorder among those imported sheep during which either morbidity and mortality was once excessive (cited by way of HENNING, 1949). HuTCHEON (1881) gave this sickness the identify of "Fever" or "Epizootic Catarrh", for you to distinguish it from different scientific stipulations of an analogous nature encountered among sheep. within the first com­ prehensive description of this scientific syndrome and its epizootiology HuTCHEON (1902) spoke of it as "Malarial Catarrhal Fever of Sheep", a designation which used to be evidently prompted via the wrong trust that an intracorpuscular parasite used to be the first reason for the illness. extra systematic experiences have been carried out by way of SPREULL (1902; 1905), who endeavoured to immunize sheep by means of the simultaneous inoculation of immune serum and infective blood.

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Extra resources for African Swine Fever Virus: Bluetongue Virus

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47 2. Chemical Composition . . . . . . . . . . . . . . . . . . . . 47 3. Acid.................... 48 D. Agents . . . . . . . . . . . . 49 I. Thermal Inactivation .. . . . . . . . . . . . . . . . . . . . . 49 2. pH Stability . . . . . . . . . . . . . . . . . . . . . . . . . 50 3. Agents . . . . . . . . . . . . . . . . . . . . . . . 50 36 P. G. Howell and D. W. Verwoerd: Bluetongue Virus V. Antigenic Characteristics .

50 50 50 51 52 53 53 53 55 VI. Interactions with Mammalian Hosts . . . . . . . . . . . . . . . . . A.. Pathogenesis . . . . . . . . . . . . . . . . . . . . . . . . . . B. Essential Clinical Features . . . . . . . . . . . . . . . . . . . . C. Pathology . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. Macroscopic Pathology . . . . . . . . . . . . . . . . . . . . 2. Histopathology. . .

E. Epizootiology..... . . . . . . . . . . . . . . . . . . . . . . . 56 56 58 60 60 61 63 63 63 65 66 VII. Classification and Nomenclature . . . . . . . . . . . . . . . . . . . 68 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Addendum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 74 Introduction - Historical 37 I. Introduction Bluetongue may be described as an acute insect borne disease of ruminants, manifested clinically in sheep by a catarrhal inflammation of the mucous membranes of the digestive and respiratory systems and associated with degenerative changes in the skeletal musculature.

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African Swine Fever Virus: Bluetongue Virus by William R. Hess, Peter G. Howell, Daniel W. Verwoerd


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