ISSN: 1813-0410

Author : Bazii,

Some Hematological and Histological changes in seminiferous tubules of pigeon (Columba livia) that exposed to different periods of light

Bazii; Sinaa Al

journal of kerbala university, Volume 3, Issue 3, Pages 189-195

Sixty two of male pigeon type Columba livia divided into three groups, 24 birds in each group since September to November in 2006 .one of this group exposed to normal period of light,anthor exposed to long- term period of light , the last one exposed to short-term period of light.The results showed that the body weight of birds increased significantly (p<0.05) ,in addition the mean weight of testis , WBC were significantly decreased (P<0.05) when exposure to short period of light in compared with other groups. Histological study carried out on seminiferous tubules to measured the outside diameters and counted the germinal epithelial cells(spermatogonia, Round spermatids and Primary spermatocytes) and sertoli cells , the results revealed that the seminiferous tubules diameters was significantly distended (P<0.05) with significantly decreased (P<0.05) in number of germinal epithelial cell and sertoli cells when exposed to short period of light in compared with other groups.