عناصر مشابهة

• A Genetic Study on the Lactation Curve in Friesian Cattle
  بواسطة: Abu Bakr, Hanaa Abd Alharith منشور: (1991)
• effect of progesterone therapy on pregnancy rate and concentration of progesterone in plasma and milk Friesian cows
  بواسطة: Al Katanani, Yasser Mohammed منشور: (1995)
• Physiological Studies On Friesian Cattle
  بواسطة: Ziedan, Alaa Al Saied Bellasy منشور: (1989)
• Environmental Factors Affecting Milk Production of Holstein Friesian Cows under Tropical Condition
  بواسطة: El Bushra, Mohamed El Noor منشور: (2009)
• Immunosuppressive Effect of Blood parasites on Vaccination of cattle and Buffaloes Against Rift Valley fever
  بواسطة: Desouqy, Nefesa Mahmoud منشور: (1998)