%0 Conference Proceedings %T Effect of different housing systems on hock lesions and evaluation the effect of parity and milk production on these lesions %A Zahra Ghorbani %A Elham Naderi %A Masoud Gholami %A Kimia Raeis Zade Dehkordi %A Mohamadnia, Ahmad Raza %J 16th symposium and 8th conference on lameness in ruminants %D 2011