Animal Science Abstract
Effects of space allowance during transport and duration of mid-journey lairage period on the physiological, behavioural and immunological responses of young calves during and after transport
P. N. Grigor1, M. S. Cockram1,A, W. B. Steele1, C. J. Le Sueur1, R. E. Forsyth1, J. A. Guthrie2, A. K. Johnson2, V. Sandilands2, H. W. Reid3, C. Sinclair3 and H. K. Brown4
ACorresponding author e-mail: M.S.Cockram@ed.ac.uk
1Department of Veterinary Clinical Studies, University of Edinburgh, Easter Bush Veterinary Centre, Easter Bush, Roslin, Midlothian EH25 9RG, UK
2Institute of Ecology and Resource Management, University of Edinburgh, Agriculture Building, West Mains Road, Edinburgh EH9 3JG, UK
3Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, Midlothian EH26 0PZ, UK
4Department of Public Health Sciences, University of Edinburgh, Medical School, Teviot Place, Edinburgh EH8 9AG, UK
Abstract
The effects of space allowance during transportation and duration of a mid-journey lairage period on measurements of stress, injury, dehydration, food restriction and rest in young calves were assessed during and after transport. Groups of calves were transported for two 9-h journeys (at a space allowance of either 0•375 or 0•475 m
2 per calf) separated by a mid-journey lairage period of either 1 or 12 h. Non-transported calves were offered milk replacer and drinking water either at the usual times or only at the same times as the transported calves.
During transport, transported calves spent significantly less time lying down and had a greater plasma cortisol concentration than control calves. Under the driving conditions used, increased space allowance was not associated with greater injury or loss of stability. The duration of the mid-journey lairage was not an important factor; the shorter lairage time, giving the calves sufficient time to receive milk replacer but little opportunity to rest, had no major detrimental effects on the variables used to assess welfare. Although there was little evidence that transport affected immunological variables, there was some evidence that it adversely affected the health of the calves post transport.
Keywords: animal welfare, behaviour, calves, physiology, transport
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