Environmental and behavioural factors affecting the prevalence of foot lameness in New Zealand dairy herds — a case-control study
作者:
R. N. Chesterton,
D. U. Pfeiffer,
R. S. Morris,
C. M. Tanner,
期刊:
New Zealand Veterinary Journal
(Taylor Available online 1989)
卷期:
Volume 37,
issue 4
页码: 135-142
ISSN:0048-0169
年代: 1989
DOI:10.1080/00480169.1989.35587
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A case-control study of environmental and behavioural factors influencing foot lamehess was undertaken on 62 dairy herds comprising an average of 185 milking cows in Taranaki, New Zealand. Thirty two case herds were identified as having had at least 10 per cent of the cows lame during the milking season in which the herd was studied, and thirty control herds were selected on the basis that no more than 3 per cent of cows in these herds had been lame per year for at least two years immediately prior to investigation. Each herd was visited at both a morning and an afternoon milking, and 58 risk factors were measured between the time the farmer began to assemble the cows for milking and the completion of milking.
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