Witkowska A, Stankiewicz M, Poczopko P
Acta Physiol Pol. 1985 May-Jun;36(3):208-15.
Changes of creatine concentration during development of chick embryo. Acta physiol. pol., 1985, 36 (3): 208-215. Investigations were carried out on embryos of Star Cross chicken after 6, 8, 10, 12, 14, 16, 18 and 20 days of incubation. It was found that the concentration of total creatine increased from 0.18 to 0.67 mg/g of embryo weight. The increase of creatine concentration at the time of development of the embryo was proportional to the increase in nitrogen concentration, and the share of creatine nitrogen in the pool of total nitrogen was about 1% throughout the whole period of embryonal development and during the first two days after hatching. The amount of creatine in fresh egg and in the yolk sac of the newly hatched chicken was about 1.5 mg. It was estimated that chick embryos during their development synthesized, on the average, 18 mg (6 mMol) of creatine. The course of changes in creatine concentration in the developing chick embryo is very similar to the course of changes in the rate of heat production.
鸡胚发育过程中肌酸浓度的变化。《波兰生理学报》，1985年，36(3):208 - 215。对孵化6、8、10、12、14、16、18和20天的星杂鸡胚胎进行了研究。发现总肌酸浓度从0.18毫克/克胚胎重量增加到0.67毫克/克。胚胎发育时肌酸浓度的增加与氮浓度的增加成比例，在胚胎发育的整个时期以及孵化后的前两天，肌酸氮在总氮库中的占比约为1%。新鲜鸡蛋和新孵化小鸡卵黄囊中的肌酸含量约为1.5毫克。据估计，鸡胚在发育过程中平均合成18毫克（6毫摩尔）肌酸。发育中的鸡胚肌酸浓度的变化过程与产热速率的变化过程非常相似。
