List of Articles undegradable protein Open Access Article Abstract Page Full-Text 1 - Responses of Milk Urea Nitrogen Content to Dietary Rume Degradable Protein Level in Lactating Holstein Dairy Cows H. Rafieei Open Access Article Abstract Page Full-Text 2 - Effects of Partial Replacement of Soybean Meal with Corn Gluten Meal, Fish Meal, or Their Combination on Dairy Calves’ Performance and Insulin Concentration S. Avakh M. Khodaei-Motlagh M. Kazemi-Bonchenari Open Access Article Abstract Page Full-Text 3 - اثرات پروتئین غیرقابل تجزیه در شکمبه روی توان تولیدی و توازن نیتروژن گاوهای تازهزای هلشتاین م. ابوذر ف. نیازی