<i>Flaxseed</i> and <i>Agnus-castuson vitex</i> as a source of phytoestrogens and their impact on productive performance, some blood constituents, and blood oestradiol profile of aged laying hens

To investigate the effect of Flaxseeds (Flax) or vitex Agnus-castuson (Vitex), a total 180 aged hens (58 weeks age) were divided into 5 treatment groups with 36 each as followe: 2 and 3 fed basal diet supplemented 1 g Flax/kg, respectively. And group 4 2.5 Vitex/kg, While was served control group. The experiment period lasted for two months. Flax Vitex in hens’ rations resulted significant (p ≤ .001) increase EP EM percentages compared to group, well, EW increased significantly high level only. Although, did not affect daily FI, FCR values showed improvement. both boosted egg-shell weight than slightly decline egg albumin (%),while, yolk significantly(p .001). There reduction blood cholesterol LDL concentrations groups, Contrariwise, HDL Blood antioxidant capacity concentration control. Adding ration oestradiol-17β hormone secretion group.HighlightsEgyptian chicken breeds are characterised by lower production rates commercial breeds, they reach end curve early. So, our aim use some plant materials phytoestrogens source improve reproductive productive performance these strains prolong them.