Yildirim and Kaya Greener Journal of Agricultural Sciences Vol. 7 (2), pp. 060-064, March 2017. ISSN: 2276-7770 Research Article Manuscript Number: 032217041 (DOI: http://doi.org/10.15580/GJAS.2017.2.032217041) Egg Production and Quality Traits of Layers kept in Free Range Housing System Hakan Yıldırım1, ŞerafettinKaya1* 1Mustafa Kemal University, Agriculture Faculty, Animal Science Department, 31060, HATAY/ TURKEY Abstract The objective of this study was to compare egg quality and yield in laying hens of two different housing systems indoor and free range. In this study, 120 H&N (Nick-Chick) white egg layer pullets were used. They were divided to equally two groups free range and indoor housing system. Indoor birds were individually caged while free range birds were allowed to access free range grass paddock (red clover+ fescue + brome grass area, 4 m2/1 bird) plus floored area with wooden shavings. Standard feeding regimen was applied on experimental laying hens. Their egg traits were recorded during the period of 21-46 weeks old. Housing system has a significant effect on layer final body weight (P˂0.01). Free range group was higher than indoor group about total egg/month, hen/house and hen % when egg yield compare to the groups. Egg weight was higher in indoor group (59.04-60.22 g), but shell thickness (0.38-0.37 mm) and yolk index (46.07-44.91) were higher free range system (P˂0.01). Housing systems have not significant effects on other egg characteristics such as shell ratio, shape index and albumen index. Keywords: Egg quality, egg yield, free range, indoor, layer. Return to Content View [Full Article – PDF] [Full Article – HTML] [Full Article – EPUB] Post-review Rundown View/get involved, click [Post-Review Page] References Anderson KE and Adams AW (1994). Effects of cage versus floor environments and cage floor mesh size on bone strength, fearfulness and production of single comb White Leghorn hens. Poultry Science. 73: 1233–1240. 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