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Consistency of Measurement of Social Status in Dry-Sows Group-Housed in Indoor and Outdoor Systems
- R H Bradshaw, J Skyrme, E E Brenninkmeijer, D M Broom
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- Journal:
- Animal Welfare / Volume 9 / Issue 1 / February 2000
- Published online by Cambridge University Press:
- 11 January 2023, pp. 75-79
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Each of two 20-sow groups consisted of gilts ie virgin sows (one third) and sows (parity 2-5, ie sows which had given birth 2-5 times). One group was housed indoors with a straw-covered lying area and dunging area. Another group was housed outdoors with a covered straw lying area and two rooting fields. Behavioural observations were made on both groups: indoor sows were observed for 4h day−1, for 10 days (40h); outdoor sows were observed for 6h day−1, for 21 days (126h). Social interactions were classified as threat, bite, knock and push. Continuous data on the type of interaction and the winner or loser were recorded. Four measures of social status, based on social behaviour, were calculated: i) displacement index; ii) level of interaction; iii) success in interactions; and iv) matrix dominance. Spearman rank correlation coefficients between different ranked measures of social status within each group (outdoor or indoor) were significant for displacement index, success in interaction and matrix dominance. The level of interaction did not correlate with other measures (except for matrix dominance in the indoor group). Measures of displacement, success in interaction and matrix dominance provide highly consistent and correlated measures of social status.
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Dillon, Robert DiSalle, Mary Domski, Alan Donagan, Paul Draper, Fred Dretske, Mircea Dumitru, Wilhelm Dupré, Gerald Dworkin, John Earman, Ellery Eells, Catherine Z. Elgin, Berent Enç, Ronald P. Endicott, Edward Erwin, John Etchemendy, C. Stephen Evans, Susan L. Feagin, Solomon Feferman, Richard Feldman, Arthur Fine, Maurice A. Finocchiaro, William FitzPatrick, Richard E. Flathman, Gvozden Flego, Richard Foley, Graeme Forbes, Rainer Forst, Malcolm R. Forster, Daniel Fouke, Patrick Francken, Samuel Freeman, Elizabeth Fricker, Miranda Fricker, Michael Friedman, Michael Fuerstein, Richard A. Fumerton, Alan Gabbey, Pieranna Garavaso, Daniel Garber, Jorge L. A. Garcia, Robert K. Garcia, Don Garrett, Philip Gasper, Gerald Gaus, Berys Gaut, Bernard Gert, Roger F. Gibson, Cody Gilmore, Carl Ginet, Alan H. Goldman, Alvin I. Goldman, Alfonso Gömez-Lobo, Lenn E. Goodman, Robert M. Gordon, Stefan Gosepath, Jorge J. E. Gracia, Daniel W. Graham, George A. Graham, Peter J. Graham, Richard E. 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- Edited by Robert Audi, University of Notre Dame, Indiana
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- Book:
- The Cambridge Dictionary of Philosophy
- Published online:
- 05 August 2015
- Print publication:
- 27 April 2015, pp ix-xxx
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Consistency of measurement of social status in sows housed in two group dry-sow systems
- R. H. Bradshaw, J. Skyrme, E. E. Brenninkmeijer, D. M. Broom
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- Journal:
- Proceedings of the British Society of Animal Science / Volume 1998 / 1998
- Published online by Cambridge University Press:
- 05 November 2021, p. 109
- Print publication:
- 1998
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A wide range of measures have been employed in an attempt to determine social structure in groups of animals and different analyses of social behaviour may result in the construction of different hierarchies (Tomback et al. 1989). In order to investigate social aspects of welfare in group-housed sows it is important to establish a meaningful measure of group dynamics. We therefore wished to establish whether different measures of social status resulted in the construction of similar hierarchies in dry-sows housed in indoor or outdoor group-housing systems.