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The Research was carried out to study the differences of carcass and offal characteristics between local normal and mutant (white feather gene) quail under laboratory conditions in faculty of agriculture, university of Aleppo between November 2012 and December 2013. Two quail strains were keeping out till sixth generation F6 for genetically purity. 200 birds of F6 generation (110 normal birds: 66 female & 44 male and 90 mutant birds: 57 female & 33 male) were used at 56th day. The results showed that mutant group with white feather gene (whwh) have significantly superlative on the normal group in most of carcass characteristics. Significantly increasing at (P<0.01) obtained in mutant group for live body weight, body weight after slaughter, body weight after slaughter and tweezing and gizzard weight by 4.7%, 4.9%, 5.6%, 5.6%, respectively compared with normal group. Also, significantly increasing at (P<0.001) obtained in mutant group for giblets weights: abdominal fat, liver and heart by 11.8%, 15.6% and 16.8% respectively comparing with normal group. The weight of feathers in normal group was bigger than mutant group. No significant differences were showed in other characteristics. [ABSTRACT FROM AUTHOR]