Effects of Bioherbal and Bioherbal Plus Feed Supplements on the Production, Egg Traits, Blood Biochemistry, and Immunity Parameters of Laying Hens

The use of medicinal plants represents a new approach for utilizing phytogenic feed additives to improve production, health, and growth performance in the poultry industry. In this study, the effects of different phytogenic diets on egg production, egg quality and blood parameters in laying hens were investigated. The experimental treatments included the following: (1) a control basal diet (CON); (2) the basal diet+0.15% bioherbal (BHM) mineral supplement; (3) the basal diet+ 1.5% bioherbal (BH); (4) the basal diet+0.15% mineral supplement (M); (5) the basal diet +0.15% bioherbal plus 1.5% mineral supplement (BHPM); and (6) the basal diet + 0.5% bioherbal plus 1.5% BHP. The results showed that egg quality indicators did not significantly differ in response to the addition of the various phytogenic feed additives, whereas the yolk index significantly differed among the treatments only in the first period of study(P