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This experiment was conducted to investigate the effects of stocking density on performance and blood characteristics of broiler chicken in summer. One day-old 648 male commercial broiler chicks(Ross strain) were divided into 3 groups with 4 replicates(12 pens), 41 to 69 birds per pen, to compare the stocking density difference on growth performance and blood characteristics. Birds in T1, T2 and T3 were reared in different size 0.050, 0.066, 0.083 ㎡/bird floor, respectively. The birds were fed the same experimental diet ad libitum for 5 weeks. Chickens were weekly weighed and one bird was selected from each pen to measure blood characteristics at the end of experiment. Body weight and feed intake increased significantly in low density treatment(T3) compare to that of high density treatment(P<0.05). Feed conversion was significantly improved in customary treatment(T2) relative to that of other treatments(P<0.05). No significant difference was observed in moisture contents of bedding among treatments. In blood characteristics, low density treatment(T3) decreased the total protein, cholesterol and albumin, but were no significant difference.
From the result of this study, it could be concluded that the higher stocking density might give more stress to the birds from physical stimuli and thus were harmful environment causing lower productions compared to the lower ones

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UCI(KEPA) : I410-ECN-0101-2009-527-016772371