@article{paperid:1008247, author = {Vakili, Seyed Alireza and Danesh Mesgaran, Mohsen and Heravi Moussavi, Alireza and Valizadeh, Reza and Nassiri, Mohammadreza}, title = {Ruminal Peptide and Ammonia Nitrogen Concentrations in Holstein Steers Fed Diets Differing in Concentrate to Alfalfa Hay Ratios}, journal = {Journal of Animal and Veterinary Advances}, year = {2007}, volume = {6}, number = {3}, month = {March}, issn = {1680-5593}, pages = {392--398}, numpages = {6}, keywords = {peptide; Amonia; Protein degradation;steer}, }