鶏胎児成長に及ぼす諸条件の研究-1-

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Although many experiments on metabolism of the chick embryo have been reported, most of them were conducted by using dissected eggs in different stages of growth. It would be very convenient for observation of the genesis of chick embryo if the existence and growth of the embryo could be maintained inside the egg shell opened partly or without wholeshell. In this regard the author prepared an 'open-windowed egg' and kept it alive in an incubation bottle. The chick embryo was found to keep its growth and genesis for a week or so under certain conditions of temperature, humidity and gas ventilation in a onestoried incubation bottle. Moreover, a twe-storied incubator was devised, the upper space of which was in contact with the contents of an incubating egg and the lower space of which with the shell part of such egg. In this incubation bottle the genesis of an egg could be maintained for 20 days by supplying oxygen gas under appropriate conditions. Many experiments were performed with this incubator and good results obtained by supplying oxygen with 90-100% humidity to the upper space(in contact with the contents of the egg) and oxygen with 60-75% humidity to the lower space(in contact with the shell part).
社団法人日本畜産学会の論文