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The purpose of this study was to evaluate the effects of stocking density on feather condition, egg quality, blood parameters, and corticosterone levels of laying hens reared in conventional cages. A total of 500, 28 weeks-old Hy-Line Brown laying hens were evenly assigned to two stocking densities (750 and 500 cm/bird). There were 50 replicates of each treatment, each consisting of 750 cm/birds (n=6) or 500 cm/bird (n=4) birds in a cage, respectively. We observed an increase in the laying period of, the group that was assigned 500 cm/bird, however, this group experienced significant feather damage when compared with the group allotted 750 cm bird. There was no effect of stocking densities on egg quality. These results suggest that the 500 cm/bird stocking density in the conventional cage can negatively affect feather condition and cause the birds to experience more stress than the group allotted 750 cm/bird. (

han'gug ga'geum haghoeji/han-guk gageum hakoeji

Effect of Stocking Density on the Feather Condition, Egg Quality, Blood Parameters and Corticosterone Concentration of Laying Hens in Conventional Cage