Pengaruh Penggunaan Tepung Ampas Tahu Dalam Ransum Itik Tegal Dewasa Terhadap Koefisien Cerna Protein, Retensi Nitrogen Dan Utilisasi Protein Neto. (The Effect of Tofu Waste in the Diet on the Protein : Digestibility Coefficient, Retention and Net Utilization of Mature Female Tegal Duck) - ANDRIAN., DEDI (2005)