蛋重对蛋鸭孵化效果的影响

将三个品种(攸县麻鸭、麻旺鸭和三穗鸭)种鸭蛋按蛋重各分5个组在相同的条件下孵化,研究蛋重对不同品种孵化效果的影响。结果表明,种蛋受精率和入孵蛋孵化率:攸县麻鸭蛋重在65~73 g最高,麻旺鸭蛋重在66~70 g最高,三穗鸭蛋重在66~74 g最高,种蛋过重或过轻均不利于种蛋孵化。胚胎死亡率:攸县麻鸭在蛋重61~65 g最低,三穗鸭在蛋重小于62 g时最低,麻旺鸭在蛋重小于58 g时最低,攸县麻鸭种蛋重量适中有利于胚胎成活,三穗鸭和麻旺鸭种蛋重量较轻时有利于胚胎成活。

Influence of egg weight on laying ducks hatching effect

To study influence of egg weight on laying ducks hatching effect, three laying ducks (Youxian Sheldrake duck, Ma Wang duck, Sansui duck) were divided into 5 groups based on egg weights in each breed were hatched under the same conditions. The re-sults showed that fertility rate of hatching eggs and hatching rate of setting eggs were the highest while egg weight ranged from 65 g to 73 g in Youxian Sheldrake duck, 66 g to 70 g in Ma Wang duck, and 66 gto 74 g in Sansui duck. Eggs overweight or underweight were not conducive to hatching. Embryonic mortality was the lowest while egg weight ranged from 61 g to 65 g in Youxian Sheldrake duck, under 62 g in Sansui duck, and under 58 g in Ma Wang duck. Medium weight eggs were conducived to embryo survival in Youxian Sheldrake duck. Lighter weight eggs were conducived to embryo survival in Sansui duck and Ma Wang duck.