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Submitted on: 06 August 2000.
Revised on: 06 November 2000.
Accepted on: 17 December 2000.
___________________APPLIED ANIMAL BEHAVIOUR SCIENCE
Submitted on: 27 September 2016.
Revised on: 25 November 2016.
Accepted on: 10 January 2017.
___________________APPLIED ANIMAL BEHAVIOUR SCIENCE
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Submitted on: 22 July 2001.
Revised on: 01 November 2001.
Accepted on: 29 December 2001.
___________________APPLIED ANIMAL BEHAVIOUR SCIENCE
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Submitted on: 11 May 2009.
Revised on: 22 July 2009.
Accepted on: 31 August 2009.
___________________APPLIED ANIMAL BEHAVIOUR SCIENCE
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