The present study was conducted to investigate various micrometric parameters of bronchiole and bronchi in prenatal Gaddi sheep lung. A total of n=18 Gaddi sheep fetuses were collected from various slaughter houses in and around Palampur town for one year. The prenatal lung samples were divided into three groups which included group-I (0-50 days of gestation), group-II (50-100 days of gestation) and group-III (100-150 days of gestation) based on their age in days. The overall diameter of bronchiole increased from group-I to group-III. However, the diameter of bronchi decreased significantly in right apical, left apical and left cardiac lobe but it increased significantly in right cardiac and left diaphragmatic lobe from group-II to group-III. The epithelial height of bronchiole decreased from group-II to group-III in left apical and right diaphragmatic lobes. While, the height of nucleus of bronchiole decreased significantly from group-II to group-III in left apical, left cardiac and left diaphragmatic lobes. The epithelial height of bronchi decreased significantly from group-II to group-III in apical and accessory lobes of right lung. However, the nucleus height of bronchi decreased significantly from group-II to group-III in right apical and right diaphragmatic lobes. | Micrometrical studies of bronchi and bronchiole in prenatal gaddi (Breed) sheep lung
