Abstract: Taking Shanxing duck(SX), Jinyun Ma duck(JM), Shanma duck(SM), SX×JM and SM×JM as study objects, egg quality among the different laying ducks and their hybridized combinations were compared. Each strain sampled 30 greenshell eggs randomly. The result showed: all egg shape index of strains showed no significant difference and were up to the standard; shell thickness were the highest in SX×JM green shell eggs, which was significantly different from SX, SM, and SM×JM (P<0.05); shell intensity in SX×JM and SM was the biggest and significantly different from SX (P<0.05); Egg weight in SX was the highest and significantly different from other breeds (P<0.05); albumen height in SX×JM was the highest and significantly different from other breeds (P<0.05); Hough unit in JM were the highest, and significantly different from SX in which Hough unit were the lowest (P<0.05). In total, SX×JM were best in shell thickness, shell strength and albumen height, while egg weight was biggest in SX. Correlation analysis showed a very significantly positive correlation between shell thickness and shell intensity(P<0.01); and that Hough unit was negative correlated with egg weight(P<0.05), and very significantly positive correlated with albumen height (P<0.01).

Key words: ducks, egg quality, Shaoxing duck, Jingyun Ma duck, Shanma duck