Effect of Probiotics, Yeast, Vitamin E and Vitamin C Supplements on Performance and Immune Response of Laying Hen During High Environmental Temperature

Maziar Mohiti Asli, Farid Shariatmadari, Seyed Abdollah Hosseini and Houshang Lotfollahian

International Journal of Poultry Science 6 ( 12 ): 895 - 900 , 2007