Study of the Ossification Centers of Thorax in Partridge “Alectoris Chukar” After Hatching by Radiographic and Staining Techniques ‎

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The purpose of this study is to consider the thoracic cavity ossification centers, time and formation and completion of bones. In this paper, 50 fertilized eggs of Partridge were placed inside the incubation unit for hatching. Spilling of them at 2 birds for radiography and modified double staining Alizarin Red and Alican Blue, in the first week of two birds (first and seventh days) and then at the end of the second week, third, fourth, fifth, sixth, seventh, eighth, ninth, respectively. The results of this study showed that the ossification centers in some of the bones such as thoracic vertebrae, ribs, and craniolateral process and caudolateral process of the sternum are apparent in the embryonic stage, but the ossification centers in the body of the sternum and sternal crest will be ossified after hatching up to ninth week. It may be said that all of the thoracic areas are ossified and skeletal development is completed on day 70 after hatching.