Ahmed Mohamed Abdelhafeez Mostafa <br/><br/>
Productive and reproductive performance of lactating cows fed corn silage without or with some of Probiotics /  
 الاداء الانتاجى والتنا سلى للأبقار الحلابة التى تغذت على سيلاج الذرة بدون او مع بعض التركيبات الحيوية 
Ahmed Mohamed Abdelhafeez Mostafa ; Supervised Sobhy Mahmoud Allam , Gamal Eldeen Aboulfotouh Ahmed , Ahmed Mohamed Abdelmoaty Elgaafarawy 
 - Cairo :   Ahmed Mohamed Abdelhafeez Mostafa ,   2006 
 - 163 P. :   charts ;   30cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Agriculture - Department of Animal Production 
<br/><br/> During hot months of summer there is a clear drop in productive and physiological performance of Friesian dairy cows Many factors affect this phenomenon , of which feeding quality is considered as one of these factors In Egypt , the total cultivated area of corn crop was about 2 million feddans 
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<br/><br/><label>Subjects--Index Terms: </label>lactating cows physiological performance Probiotics