عناصر مشابهة

• Environmental and Genetic Aspects of Some Productive Traits In Ducks
  بواسطة: El Maghawry, Ahmed Magdy Mohamed منشور: (1983)
• Effect of Starter And Finisher Diets And Their Changing Times on the Performance of Broiler Chickens
  بواسطة: Ahmed, Kamel Ibrahim Said منشور: (1990)
• Effect of some managerial and nutritional factors in broilers oroduction
  بواسطة: Shehata, Atef Said Ahmed منشور: (1988)
• Effect of Breed- Crossing and Feeding Sgstem On the Meat Production of Rabbits
  بواسطة: El Sayed, Hassan Mahmoud منشور: (1988)
• Pathologic Studies of Mycotic Affections on Broiler In Large Farms
  بواسطة: El Said, Mohamed Mohamed Al Saida منشور: (1998)