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The influence of climatic conditions on physiological and behavioural parameters in dairy cows kept in open stables

Published online by Cambridge University Press:  18 August 2016

M. Zähner
Affiliation:
Swiss Federal Veterinary Office, Centre for Proper Housing of Ruminants and Pigs, FAT, CH-8356 Tänikon, Switzerland
L. Schrader*
Affiliation:
Swiss Federal Institute of Technology (ETH) Zurich, Institute of Animal Sciences, Physiology and Animal Husbandry, CH-8092 Zurich, Switzerland
R. Hauser
Affiliation:
Swiss Federal Veterinary Office, Centre for Proper Housing of Ruminants and Pigs, FAT, CH-8356 Tänikon, Switzerland
M. Keck
Affiliation:
Swiss Federal Research Station for Agricultural Economics and Engineering, FAT, CH-8356 Tänikon, Switzerland
W. Langhans
Affiliation:
Swiss Federal Institute of Technology (ETH) Zurich, Institute of Animal Sciences, Physiology and Animal Husbandry, CH-8092 Zurich, Switzerland
B. Wechsler
Affiliation:
Swiss Federal Veterinary Office, Centre for Proper Housing of Ruminants and Pigs, FAT, CH-8356 Tänikon, Switzerland
*
Corresponding author. E-mail:lars.schrader@fal.de
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Abstract

This study aimed to assess whether cows are able to cope with the range of climatic conditions they are exposed to in open stables on commercial farms in central Europe. On each of four farms, ten lactating cows were observed over a total of five weeks in winter, spring and summer. Based on continuous measurements of air temperature (–13·8 to 28·7ºC) and relative air humidity (0·26 to 0·99), a mean value of a temperature humidity index (THI) was calculated for each farm and each observation day for night and day.

THI had significant effects on skin temperature and body surface temperature (infra-red thermography) both during night and day. Rectal temperature, duration of lying and cortisol concentration in the milk was significantly affected by THI during the day but not during the night. Heart rate and frequency of lying did not significantly covary with THI. Differences between farms and interactions between THI and farm were significant for most parameters. These results suggest that the climatic conditions during the day induced stronger thermoregulatory responses than the conditions during the night. Within the measured range of climatic conditions the cows were hardly exposed to severe cold or heat stress.

Information

Type
Ruminant nutrition, behaviour and production
Copyright
Copyright © British Society of Animal Science 2004

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