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Growth delay and unusual body movement was reported in hypoxia environment. We focused on those two phenomenon and investigated. About growth delay, we measured size of chick embryo using image processing in 21%, 15% and 10% oxygen concentration environment. Chick embryos grew up that is same way on all environment until 110 hours. But growth level changed after 110 hours on each environment. On 21% oxygen concentration environment, chick embryos grew up rapidly. On 15%, growth speed became slow. On 10%, growth was stopped and this chick embryo died. This tendency is similar to change of amount of body movements in hypoxia environment. About body movement, we already have body movement analysis program. So we attempted improvement of analysis program. Existing program is image processing program that analyze movement of chick embryos head. We developed new analysis program that analyze center of gravity of chick embryo for analyze whole body movement of chick embryo. As a result of analysis, center of gravity did not moved. Therefor we think that center of gravity is axis of body movement.

Growth and Body Movement Analysis Using Image Processing in Early Stages of Chick Embryos Under Hypoxic Environment