Research Article
Effect of Partial Substitution of Rations Soybean Meal by Biologically Treated Feathers on Rumen Fermentation Characteristics (in vitro)
Siham A. Ismail,
Azza M. Abdel-Fattah,
Mohamed A. Emran,
Hossam H. Azzaz ,
Mamdouh S. El-Gamal and Amal M. Hashem