the effect of different levels of tomato pomace with without multi–enzyme on performance and egg traits of laying

this experiment was designed to evaluate the effects of different levels of tomato pomace (dtp) with different multi enzymes on the performance and egg quality of laying hens at the first phase of production. in this experiment 432 hens were used in a completely randomized design in a factorial arrangement of 4×4, with four levels of tomato pomace (0, 4, 8 and 12) and different enzymes (without enzyme, natozyme, rovabio and kemin) with three replicates of 12 laying hens in each replication. these rations were fed for a 12-wk period by hens (hy-line w-36) beginning at 33 wk of age. the results showed that the inclusion of dtp significantly affected egg weight (g), egg production (%) and difference between means of treatments were significant (p