Mousa, B.H., AND 		AL-Rawi, A.J..
" Effect of adding locally probiotic and Cupric Sulphate  to Laying Hens Diets on the Performance , Egg Yolk Cholesterol and Blood biochemical Parameters" <em>Journal of Kerbala for Agricultural Sciences</em> [Online], Volume 2 Number 4 (1 December 2015)