Impact of supplementing diets with propolis on productive performance, egg quality traits and some haematological variables of laying hens
Summary One hundred and twenty eight, 28-weeks-old Lohmann LSL hybrid layers were used in his experiment, which lasted 12 weeks to investigate the effect of propolis supplementation on the productive performance, egg quality traits and haematological variables of laying hens. All hens were randomly classified into four equal experimental groups, eight replicates (4 birds/each). Hens in group 1 were fed ... إقراء المزيد