@inproceedings{paperid:1013991, author = {Gholizadehnivlouei, Hojjat and Naserian, Abbas Ali and Valizadeh, Reza and Tahmasbi, Abdol Mansour and Sari, Mohsen}, title = {Effect of different sources of supplemental protein on performance and on ruminal pH and NNH3 NH3}, booktitle = {British Society of Animal Science 2009}, year = {2009}, location = {ENGLAND}, keywords = {prorein sources; performance; ruminal pH Holstein dairy cow}, }