@article{MAKHILLJAVA20098121911, title = {Researches on the Responses of Different Hybrid Layers with Respect to Egg Production Performances to Forced Molting Programs with and Without Feed Withdrawal}, journal = {Journal of Animal and Veterinary Advances}, volume = {8}, number = {12}, pages = {2680-2686}, year = {2009}, issn = {1680-5593}, doi = {javaa.2009.2680.2686}, url = {https://makhillpublications.co/view-article.php?issn=1680-5593&doi=javaa.2009.2680.2686}, author = {Ali and}, keywords = {Forced molting,non-feed withdrawal,egg production,heterophil:lymphocyte ratio,alfalfa meal,hybrid layer}, abstract = {This 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 had 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.} }