1930Outspan 31 Oct. 69‘Gousiekte’ and ‘geel dikkop’ in sheep, ‘staggers’ or ‘rushing disease’ of cattle, ‘jagsiekte’ in horses, and possibly also ‘dunsiekte,’ are all caused by plant poisoning.
1937Handbk for Farmers (Dept of Agric. & Forestry) 357‘Jaagsiekte’ in horses is caused by the plants Crotalaria dura and C. globifera...the first noticeable symptom is the increase in the rate of respiration (breathing), which may vary from 100 to 120 per minute. A dry cough is present.
1966C.A. SmithCommon Names 257These species (sc. Crotalaria dura and C. globifera) have been incriminated in causing the disease, known as ‘Jaagsiekte’, in horses, whence the vernacular name.
1913C. PettmanAfricanderisms 232Jagziekte, (D. jagen, to hunt; ziekte, sickness.) Chronic catarrhal pneumonia in sheep is thus designated, the panting of the animal making it look as if it had been hunted.
1914Farmer’s Annual 223There is strong evidence that in certain conditions jagziekte is infectious or contagious, but all attempts to communicate it artificially by innoculation of the blood with inflammatory products from the lungs have failed...Jagtziekte is a pneumonia — that is, an inflammation of the lungs, but of a peculiar character.
[1934C.P. Swart Supplement to Pettman. 80A herb that causes ‘jaagsiekte’ in sheep i.e. chronic catarrhal pneumonia which causes the affected animal to pant and give it the appearance of having been hunted. The herb, whose botanical name is Crotalaria dura, is found in the Midlands of Natal.]
1976Mönnig & VeldmanHandbk on Stock Diseases 276The cause of jaagsiekte in sheep is as yet unknown, but it is possible that susceptibility to the disease is hereditary. It is characterized by a continuous growth of the tissue of the smallest air passages, which later have the appearance of a tumor invading the lung.
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