EFFECT OF AGE AT FIRST CALVING AND FIRST LACTATION MILK YIELD ON PRODUCTIVE LIFE TRAITS OF SYRIAN SHAMI COWS

Document Type : Original Article

Authors

• Obaida Abdel Kareem Almasri ¹
• Samy Abou-Bakr ²
• Mohamed A. Ibrahim ³

¹ General commition for agriculture scientific research, Damascus, Syria

² Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt

³ Department of Animal production, Faculty of Agriculture, Cairo University, Giza, Egypt

Keywords

• Age at first calving
• First lactation milk yield
• Productive life traits
• Syrian Shami cows