Submitted on: 12 January 2003.
Revised on: 24 March 2003.
Accepted on: 20 May 2003.
___________________Italian Journal of Animal Science
Submitted on: 02 March 2012.
Revised on: 22 May 2012.
Accepted on: 09 June 2012.
___________________Italian Journal of Animal Science
http://reply.papertrans.cn/2/148/14717/14717-33.png
Submitted on: 24 June 2014.
Revised on: 13 October 2014.
Accepted on: 25 October 2014.
___________________Italian Journal of Animal Science
Submitted on: 16 April 2021.
Revised on: 06 August 2021.
Accepted on: 07 September 2021.
___________________Italian Journal of Animal Science
Submitted on: 11 March 1998.
Revised on: 02 April 1998.
Accepted on: 03 May 1998.
___________________Italian Journal of Animal Science