Suspected photosensitisation in lambs grazing birdsfoot trefoil (Lotus corniculatus)
作者:
K.J. Stafford,
D.M. West,
M.R. Alley,
G.C. Waghorn,
期刊:
New Zealand Veterinary Journal
(Taylor Available online 1995)
卷期:
Volume 43,
issue 3
页码: 114-117
ISSN:0048-0169
年代: 1995
DOI:10.1080/00480169.1995.35866
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Suspected photosensitisation occurred in three groups of lambs grazing birdsfoot trefoil (Lotus corniculatusC.V. Grasslands Goldie). In one group, sucking lambs aged about 10 weeks, grazing birdsfoot trefoil, developed skin lesions while lambs of a similar age and from the same flock grazing lucerne (Medicago sativa) or a mixed sward of both species showed no signs of photosensitisation. Affected lambs had lesions on their backs and ears. In a few animals the tips of the ears were shortened by 2–3 cm. In the affected lambs, serum liver enzymes (gamma-glutamyl- transferase, glutamate dehydrogenase), bilirubin and serum Vitamin B12levels were within the normal range. At necropsy, no significant pathological changes were detected in the liver and histological changes in the skin were consistent with primary photosensitisation. In the second group, three of 80 weaned lambs grazing the same birdsfoot trefoil at a restricted intake were affected in the same manner as the first group. In the third group, 15 animals from 28 sets of sucking twin lambs were also affected. In only two sets of twins were both lambs affected. None of the ewes grazing with the lambs in the first or third groups showed any clinical signs of photosensitisation.
点击下载:
PDF (1117KB)
返 回