%0 Conference Proceedings %T The effect of concentrate to forage ratios on Ruminococcus albus population in rumen fluid of Holstein steers determined by real time PCR %A Vakili, Seyed Alireza %A Danesh Mesgaran, Mohsen %A Heravi Moussavi, Alireza %A Hosseinhhani, Ali %A Yáñez Ruiz %A Newbold, C.J %J 60th Annual Meeting of the European Association for Animal Production %D 2009