Aygun, AliYetisir, Ramazan2020-03-262020-03-2620091680-5593https://hdl.handle.net/20.500.12395/23831This research was carried out to determine the effects of four forced molting programs including three non-feed withdrawal programs (BB: Barley Based, WB: Wheat Bran based and OB: Oat Based) which supplied with alfalfa meal and one feed withdrawal method (FW: control 8 days FW + 34 days resting diet) on egg production performances of 320 brown (H and N Brown Nick) and 320 white (Hy-Line W-36) hybrid layers at 57 week of age. The experiment lasted totally 46 weeks including for 6 weeks molting period followed by a 40 weeks post molt production period. According to the results obtained, the genotype bad significant (p<0.05) effect on body weight loss, feed consumption, hen day egg production (number%), cracked egg (%) and Heterophil: Lymphocyte (H:L) ratio (p<0.01) in molting period. Molting methods had significant (p<0.01) effects on body weight loss, feed consumption, hen-day egg production (number%) in molting period. In the production period; BB group had lower (p<0.05) hen-day egg production (%) than those of OB and FW groups. Feed efficiency values of WB group were better (p<0.05) than the values of OB and FW groups. As conclusion, after examining these production criteria, it can be stated that; non feed withdrawal methods, especially OB program can be used alternative to FW program. But, other non-feed withdrawal programs also can be used successfully as molting procedure.eninfo:eu-repo/semantics/closedAccessForced moltingnon-feed withdrawalegg productionheterophil:lymphocyte ratioalfalfa mealhybrid layerArticle81226802686N/AWOS:000271623400049Q4