Abstract
Non-feed removal molting programme in commercial brown laying hens and its influence on pre-molting, post-molting and end of cycle egg quality traits were investigated. Overall 54 birds were randomly divided into three treatment groups and each group was fed with one of the following diets during 10 days of molting period: (i) grain barley, (ii) alfalfa meal, or (iii) commercial layer ration (non-molted control group). Eggs obtained from groups in pre-molting, post-molting and end of cycle periods were examined for several quality performance traits such as egg weight, specific gravity, shape index, shell strength, shell thickness, eggshell weight, haugh unit, albumen index, yolk index and yolk color. Results indicated that non-feed removal molting programme based particularly on grain barley had positive effect on egg quality traits in laying hens. Notably, yolk color and haugh unit, which are considered as the most important quality parameters from the consumer point of view, were relatively improved in barley molted group.
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