GENETIC AND PHENOTYPIC ANALYSES OF DAYS OPEN AND 305-DAY MILK YIELD IN A COMMERCIAL HOLSTEIN FRIESIAN HERD

Document Type : Original Article

Author

• H. E. Rushdi

Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt

Keywords

• Holstein Friesian
• 305-day milk yield
• days open
• genetic parameters