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The Effects of 24h Water Deprivation when Associated with Some Aspects of Transportation on the Behaviour and Blood Chemistry of Sheep

Published online by Cambridge University Press:  11 January 2023

R E Jackson ,
M S Cockram ,
P J Goddard ,
O M Doherty ,
I M McGilp  and
N K Waran
R E Jackson
Affiliation:
Institute of Ecology and Resource Management, University of Edinburgh, School of Agriculture Building, West Mains Road, Edinburgh EH9 3JG, UK
M S Cockram*
Affiliation:
Institute of Ecology and Resource Management, University of Edinburgh, School of Agriculture Building, West Mains Road, Edinburgh EH9 3JG, UK Department of Preclinical Veterinary Sciences, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Summerhall, Edinburgh EH9 1QH, UK
P J Goddard
Affiliation:
Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen AB15 8QH, UK
O M Doherty
Affiliation:
Institute of Ecology and Resource Management, University of Edinburgh, School of Agriculture Building, West Mains Road, Edinburgh EH9 3JG, UK
I M McGilp
Affiliation:
Department of Preclinical Veterinary Sciences, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Summerhall, Edinburgh EH9 1QH, UK
N K Waran
Affiliation:
Institute of Ecology and Resource Management, University of Edinburgh, School of Agriculture Building, West Mains Road, Edinburgh EH9 3JG, UK
*
† Contact for correspondence and requests for reprints
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Abstract

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When sheep are transported they are potentially exposed to a number of factors, including water and feed deprivation, low space allowance and elevated environmental temperature, that are not related to vehicle motion but could result in animal welfare problems, either on their own or in combination. In a 2x2 factorial experiment, groups of sheep (n = 6) were moved from individual pens where they had access to hay and water to environmental chambers kept at either 14°C or 21°C. Within each chamber, half the sheep had access to water but they were all kept at a space allowance of 041m2 sheep−1 without feed. After 24h they were returned to their individual pens and offered hay and water. Behaviour and a range of biochemical measurements of dehydration and feed restriction were recorded before, during and after the treatment period. During the treatment period there was no evidence of dehydration, and sheep with access to water drank less than they did before the treatment. The plasma concentration of free fatty acids increased during fasting and, post-treatment, the intake of hay was greater than before treatment. The rapid post-treatment intake of dry feed was associated with some evidence of dehydration, as indicated by increased plasma osmolality and plasma vasopressin concentration. This suggests that following provision and consumption of large quantities of feed after a period without access to feed and water during transportation, sheep must be allowed sufficient time to drink before a subsequent journey is undertaken.

Keywords

animal welfarebehaviourblood biochemistrydehydrationsheeptransport
Type
Research Article
Information
Animal Welfare , Volume 8 , Issue 3 , August 1999 , pp. 229 - 241
Copyright
© 1999 Universities Federation for Animal Welfare

Footnotes

*

Current address

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