番鸭蛋壳气孔数、壳厚对出雏效果的研究

本试验分别测定新鲜番鸭种蛋 ;一照健胚蛋、死胚蛋 ;三照死胚蛋、正常出雏蛋和毛蛋的大端、中部和小端的气孔数及厚度。结果表明 :一照、三照死胚蛋和毛蛋与一照健胚蛋和正常出雏蛋气孔数差异极显著 (P <0 .0 1) ;而三照死胚蛋和毛蛋的蛋壳厚度均极显著高于正常出雏蛋 (P <0 .0 1)。并对新鲜种蛋、毛蛋和正常出雏蛋蛋壳进行扫描电镜观测 ,结果显示蛋壳结构与其它禽蛋相似 ,同时也证实了死胚蛋蛋壳厚度 (0 .395～ 0 .4 0 1mm)极显著高于正常出雏蛋(0 .36 3mm)。

Effects of Pore Number and Eggshell Thickness on Muscoy Egg to Hatching

We separatly measurate eggshell pore number and eggshell thickness of muscovy duck′s hatching eggs in this experiment,the first candling normal eggs,the first and third candling addled eggs,the pipped eggs and the normal hatching eggs at the same time.The result indicates that the average pore number of the first,third candling addled eggs and the pipped eggs are all significantly less than that of normal eggs.But the thickness of the third candling addled eggs′ and the pipped eggs′ are significantly more than that of normal eggs′.We observe the eggshell of the normal eggs,the pipped eggs and the normal hatching eggs with scanning electron microscope.The result shows that the structure of eggshell is the similar to the other poultry egg.And the thickness of pipped eggs(0.395～0.401mm)is significantly more than that of the normal hatching eggs(0.363mm).