| 释义 |
phalaris|ˈfælərɪs|
[L., f. Gr. ϕαλαρίς, Pliny's name for a similar grass; adopted by Linnæus in his Hortus Cliffortianus (1737) 23 as the name of a genus.]
A grass of the genus so called, which includes canary-grass and some species useful for grazing.
1911Agric. Gaz. N.S.W. XXII. 407 Phalaris and Kentucky Blue are spreading well. 1942Austral. Vet. Jrnl. XVIII. 182 In three districts in South Australia the grazing of stock on pastures consisting almost exclusively of Phalaris has resulted in the occurrence of a ‘staggers’ syndrome. 1946Ibid. XXII. 92/1 The general technique has been to select..areas of pasture in which phalaris was dominant. 1956Brit. Vet. Jrnl. CXII. 390 When the disease is noticed early the sheep are moved to a fresh pasture containing no phalaris and the nervous condition soon improves. 1966New Scientist 25 Aug. 412/1 Nervous disfunction of sheep grazing phalaris has been recognized for many years. 1977Weekly Times (Melbourne) 19 Jan. 10/5 Some stands of the sub clover and phalaris have been harvested for seed.
2. phalaris staggers, a nervous disorder of sheep and cattle caused by the consumption of the perennial grass, Phalaris tuberosa.
1946I. W. McDonald in Austral. Vet. Jrnl. XXII. 91/2 A disease of sheep and cattle characterized by profound nervous symptoms and degenerative changes in the central nervous system was described. The disease was associated with the consumption of the perennial grass Phalaris tuberosa and thus had become colloquially known as ‘phalaris staggers’. 1966Ibid. XLII. 279/1 Neurological disorders of sheep grazing Phalaris tuberosa have hitherto been grouped under the term ‘phalaris staggers’. 1970Jubb & Kennedy Path. Domestic Animals (ed. 2) II. vii. 387/2 The lesser syndrome, known as phalaris staggers, occurs when the plant is in lush growth and in 3–10 days after animals are given access to such pasture. Affected sheep appear normal when quiet, but, when disturbed, they show stiffness, incoordination, a staggering gait, and a tendency to fall. |