EL-Shiekh, Mervat Mohamed Hamed. <br/><br/>
The effect of using nonprotein nitrogen in feeding dairy cattle on some productive and reproductive traits  [microform] / 
 تإثير إستخدام النيتروجين الغير بروتيني في تغذية ماشية اللبن علي بعض الصفات الانتاجية والتناسلية. 
Mervat Mohamed Hamed  EL-Shiekh. 
 -  1991. 
 - 183, 3 leaves :  ill. ;  30 cm. 
<br/><br/>Thesis (Ph.D. )-- El-Mansoura University, 1991. 
<br/><br/>Includes bibliographical reference (leaves 150-183) 
<br/><br/><br/>Microfiche. <br/>Cairo, Egypt : <br/>ASUNET, <br/>4 microfiche : negative. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrogen in animal nutrition.<br/>Dairy cattle--Productivity.<br/>Proteins in animal nutrition.<br/>Urea as feed.