Submitted on: 27 July 2013.
Revised on: 30 October 2013.
Accepted on: 28 December 2013.
___________________JOURNAL OF APPLIED ANIMAL WELFARE SCIENCE
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Submitted on: 01 June 1998.
Revised on: 30 June 1998.
Accepted on: 26 July 1998.
___________________JOURNAL OF APPLIED ANIMAL WELFARE SCIENCE
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http://reply.papertrans.cn/2/153/15282/15282-35.png
Submitted on: 26 June 2012.
Revised on: 14 September 2012.
Accepted on: 03 October 2012.
___________________JOURNAL OF APPLIED ANIMAL WELFARE SCIENCE