http://reply.papertrans.cn/2/163/16274/16274-11.png
http://reply.papertrans.cn/2/163/16274/16274-12.png
Submitted on: 03 July 2004.
Revised on: 25 August 2004.
Accepted on: 18 September 2004.
___________________JOURNAL OF DAIRY RESEARCH---CAMBRIDGE UNIV PRESS
http://reply.papertrans.cn/2/163/16274/16274-14.png
Submitted on: 29 July 2014.
Revised on: 29 October 2014.
Accepted on: 23 December 2014.
___________________JOURNAL OF DAIRY RESEARCH---CAMBRIDGE UNIV PRESS
Submitted on: 14 February 2003.
Revised on: 09 June 2003.
Accepted on: 31 July 2003.
___________________JOURNAL OF DAIRY RESEARCH---CAMBRIDGE UNIV PRESS
Submitted on: 23 August 2004.
Revised on: 30 November 2004.
Accepted on: 19 January 2005.
___________________JOURNAL OF DAIRY RESEARCH---CAMBRIDGE UNIV PRESS
http://reply.papertrans.cn/2/163/16274/16274-18.png
http://reply.papertrans.cn/2/163/16274/16274-19.png
http://reply.papertrans.cn/2/163/16274/16274-20.png