Year: 2018 | Month: February | Volume 8 | Issue 1
Ultrastructure of the Thyroid Gland in Bakerwali Goat (Capra hircus)
Abstract:
The present study was conducted on the 36 samples of thyroid gland divided into three groups based on the age of animals and irrespective of sex viz.- Prepubertal (below 1 year), Pubertal (2-3 years) and Senile (above 5 years of age) containing 12 animals in each group. The study was conducted to understand the ultrastructural morphology and some of the changes in the components of the thyroid gland in goat with age. Follicular cells were cuboidal in prepubertal group but were flattened senile group. These cells remarkably showed highly dilated cisternae of rough endoplasmic reticulum which decreased in frequency with the age. Microvilli were short and sparse on the follicular cells and the number decreased in the older goats. Different sizes of apical vesicles of varying electron density were encountered that included colloid droplets, secretory vesicles and lysosome-like bodies and the appearance of these vesicles changed with age. Para follicular cells were encountered in the basal position between follicular cells in all age groups. Numerous dense cytoplasmic granules were observed and they were not apparently different and hence the general ultrastructural features of the thyroid of adult Bakerwali goat was similar to that of domestic animals.
© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
Print This Article Email This Article to Your Friend
