الفهرس 
ACKNOWLEDGEMENTOnly 14 pages are availabe for public view
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Abstract
This study was carried out during the period from November 2009 to January 2011 in one private dairy cow’s farm in
Beni Suif governorate. A total number of 720 Friesian dairy cows (age 6.2 ± 3.4 year) of different parities were kept free (loose housing) in partially sheltered yard. The shelters were constructed above 70% of the yards
area at 8 meter hiegh, the animals were allocated equally into 30 yard (24 animal / yard) each yard was about (672
m²) so stocking density 28 m² / cow on earthy floor.