Item

Absence of a causal relationship between environmental and body temperature in dairy cows (Bos taurus) under moderate climatic conditions

Verwoerd, W
Wellby, M
Barrell, G
Date
2006
Type
Journal Article
Fields of Research
ANZSRC::3109 Zoology
Abstract
(1). Continuous body temperature records from dairy cows for 46 days of summer and contemporary data for climate temperature humidity index (THI) were analysed. (2). A large component of the body temperature data was not explained by changes in THI. (3). Outside a normal range of values (above 72 for THI and 39.05 °C for body temperature), there was evidence of a causal relationship with a time delay of about 120 minutes. (4). Both variables had a prominent circadian component, but these were more likely to be due to common and/or independent causes than to any direct relationship.
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Copyright © 2006 Elsevier Ltd All rights reserved.
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