Abstract: In order to reveal the hereditary characters of Kunshan Ma Duck， the important breeding characters， including reproductive performances， body measurements and meat traits， were measured and their relationships were analyzed in the reservation farm of Kunshan Ma Duck. The results showed that the variation coefficient of body measurements was lower than that of the meat traits， which implied that the genetic stability of meat traits were not better than that of body measurements. The percentages of half\|eviscerated and eviscerated weight of female ducks were greater than those of male ducks， which suggested that meat production of female ducks was higher than that of male ducks. The correlation analysis results showed that the relationships among alive weight， carcass weight， semi-eviscerated weight， eviscerated weight and breast muscle weight were all positive and significant at the 0.01 level， the coefficients were all higher than 0.828， the correlation coefficient between eviscerated weight and semi-eviscerated weight was 0.997， and determination coefficient （r2） was 0.994， the correlation coefficient between eviscerated rate and semi-eviscerated rate was 0.990， and r2 was 0.980. It would be concluded that the relationships of them were more closely， the selection for pre-slaughter weight could reflect the characters of carcass and eviscerated weight indirectly.

Key words: Kunshan Ma Duck, reproductive performances, body measurements, meat traits, correlation