火鸡胚胎破壳和孵化过程中的生理学。V. 血浆总钙、镁浓度以及总钙与镁的比值。

Physiology of turkey embryos during pipping and hatching. V. Plasma total calcium, magnesium concentrations, and total calcium to magnesium ratios.

作者信息

Christensen V L, Biellier H V

出版信息

Poult Sci. 1982 Sep;61(9):1918-23. doi: 10.3382/ps.0611918.

DOI:10.3382/ps.0611918

Abstract

Plasma total calcium to magnesium ratios were observed as an index of muscular activity during pipping and hatching of chick and poult embryos. No significant changes were observed in plasma calcium (Ca) or magnesium (Mg) concentrations, but the total Ca to Mg ratio increased significantly just prior to pipping. Lighting the incubator during the last 5 days of incubation in significantly increased plasma Ca and Ca:Mg ratios. Lighting also resulted in significantly better hatchability and less late embryonic mortality. An increased plasma Ca:Mg ratio may be a physiological mechanism to provide increased muscular activity for the embryo in breaking the shell and emerging from it.

摘要

观察了血浆总钙镁比值，以此作为雏鸡和雏火鸡胚胎啄壳和出壳期间肌肉活动的指标。血浆钙（Ca）或镁（Mg）浓度未观察到显著变化，但在啄壳前血浆总钙镁比值显著升高。在孵化的最后5天对孵化器进行光照显著提高了血浆钙水平和钙镁比值。光照还使孵化率显著提高，胚胎后期死亡率降低。血浆钙镁比值升高可能是一种生理机制，可为胚胎破壳而出提供增强的肌肉活动。