摘要
孵化期间 ,乌骨鸡种蛋内各组成成分中钙含量呈一定规律性变化。乌骨鸡胚胎发育至 1 2日龄前 ,蛋壳、蛋清、蛋黄中钙含量变化相对较小 ;1 2日龄后 ,蛋壳中的钙较蛋清、蛋黄中的钙变化较大 ,且成为乌骨鸡种蛋发育过程中的主要钙源。试验还发现 ,孵化前蛋黄中的钙含量和出壳时剩余蛋黄中的钙含量相差不大 ,但 1 8日龄前后 ,蛋黄中的钙大幅度上升 ,证实蛋黄有富集钙的功能 ,有利于乌骨鸡胚胎生长的需要。
During fowl egg's incubation period,the variation of calcium content of each component shows up its certain regularity.Before 12 day ages,the calcium content of eggshell,albumen or yolk varies little.But after that,the calcium content of eggshell varies more than that of albumen and yolk,What's more,the calcium of eggshell turns into the main resource of calcium during the growth of fowl egg.From the experiment,we also discover that the calcium content of yolk before incubation is not quite a contrast to that of the left yolk when fowl comes to its birth.But about 18 day ages,the calcium content of yolk rises to a great extent.The result verifies that yolk can focus calcium.And it is great bencfit to what fowl's embryo need during its growth.
出处
《特产研究》
2001年第4期29-31,共3页
Special Wild Economic Animal and Plant Research
基金
徐州师范大学青年基金资助
