author(s)
Neelofar Nabi, Kamal Sarma, Shalini Suri and Jonali Devi

abstract
A comparative study was carried out on the histochemical features of the trachea of adult Pashmina, Bakerwali and non-descript goats (ten each). It was observed that the tracheal epithelial cells of all the breeds of goat showed moderate to weak reactions to glycogen indicating the presence of little or moderate amount of glycogen in various cell types of the tracheal epithelium in the goats under study. It was also found that the ciliated columnar epithelial cells of the tracheal epithelium in all the breeds of goat showed moderate to strong reactions to acidic sulfated mucosubstances. The cilia showed an intense reaction. However, the goblet cells exhibited moderate reactions to neutral mucosubstances. Also, the tall columnar ciliated epithelial cells of the tracheal epithelium of all the breeds of goat showed moderate to strong reactions for basic proteins. Different cell types of the tracheal epithelium of all the breeds showed negative reactions for fats with Sudan Black B stain.