Histological and Histological Analysis of Thyroid Gland in Slaughter Male Local Iraqian Goats (Capra aegagrus)

The present study included of collection of thyroid gland from Basra Abattoir. The samples were fixed by 10% formalin and processed by routine histology techniques, stained by H&E, PAS, IOSMIUM tetroxide and Wiegert, stain then examine under light microscope. The histological study showed the thyroid gland surround by thin-elastic connective capsule which extend into parenchyma substance of the gland. The each lobe of gland divided into lobules by trabecular, all lobule has numerous follicular which variation in size. The follicular contain two type of cells, epithelium cell (follicular cell) and function cells (parafollicular cell), then follicles filled by colloid. The histochemical study referred to found elastic fibers in the capsule and parenchyma when stain by Wiegert stain. The gland is wealthy or substantial in carbohydrate and lipids while stained via periodic acid Schiff reagent solution and osmium potassium dichromate respectively.