Gamal Attia Abdelhamid ElSisy <br/><br/>
Effect of dietary zinc and selenium supplementation on reproductive performance of male goats /  
 تاثير اضافة الزنك و السيلينيوم الى العليقة على النشاط التناسلى لذكور الماعز 
Gamal Attia Abd El Hamid ElSisy ; supervised Mohamed Samy Saied Abdou , Abd El Raouf Morcy Ghallab , Abd El Razek Mahmoud Aly Abd El Razek 
 - Cairo :   Gamal Attia Abdehamid ElSisy ,   2005 
 - 272L :   ill ;   30cm 
<br/><br/>Thesis (PH.D.) - Cairo University - Faculty Of Veterinary Medicine - Department Of Theriogenology 
<br/><br/> Twelve , male Baladi goats were used investigate the effect of organic zinc and selenium supplementation on testicular size , sex drive , semen characteristics , testosterone and thyroid (T4 and T3) hormones concentrations as well as on some antioxidant enzymes in blood and seminal plasmaGoat bucks were assigned into three groupsGroup A served as a control , Group B supplemented with 40 - ppm zinc and Group C was supplemented with 015 ppm seleniumZinc and selenium - supplementation animals resulted in significant improvement in testicular size , sex drive , semen characteristics , testosterone and thyroid hormone concentrationAlso , increased antioxidant defense in the semen and blood cells 
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<br/><br/><label>Subjects--Index Terms: </label>Dietary zinc Male Goats Performance Selenium