The studies were carried out on 40 males and 40 females from A44 ancestral strain of ducks. Dissection analysis was conducted on 7, 8, and 9-week-old ducks for genetic potential manifestion. Duck carcases were measured for estimation of correlation coefficients between carcass measurements and tissue content. Trunk and chest measurements of ducks for slaughter were increased over rearing. Sexual dimorphism in trunk and chest width, and chest depth, and also in length, circumference and thickness of shank wasn’t noticeably observed in 7, 8, and 9-week-old birds. Male and female carcases were well-muscled. Weight and proportion of breast and leg muscles increased in males and females from 7 to 9 week of rearing, respectively from 560 to 669 g, and from 29.0 to 30.1%. Weight and proportion of skin with subcutaneous and abdominal fat also increased in the following terms of carcass evaluation, respectively from 602 to 756 g, and 31.1 to 34.0%. Trunk with neck length and breast bone length were found as a good indicators of breast and leg muscles weight in ducks aged 7, 8, and 9 weeks. It was showed that when proportion of breast and leg muscles was increased, thickness of skin with subcutaneous fat was decreased (respectively r = - 0.516 and r = - 0.442) in A44 ducks aged 7 and 9 weeks. Negative correlation coefficients between breast bone length and proportion of skin with subcutaneous fat in ducks aged 7 week (r = - 0.737), 8 week (r = - 0.660), and 9 week (r = -0.609) point that when the selection pressure for breast bone length was greater, carcass fatness should be lesser. Weel-muscled and lean carcases could obtain choosing to the slelection flock the A44 ducks which distinguished by measurements positively correlated with breast and leg muscles content (trunk with neck lenght, breast bone length, chest circumference), but negatively correlated with carcass fatness (chest width).

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