Abstract:
The present study was conducted to describe the comparative histometry and histochemistry of mandibular glands in camel, ox, sheep and goat. Forty heads of apparently healthy adult animals (10 heads for each) were collected from Alssalam slaughter house, Omdurman, Sudan. The histometric measurements revealed three types of acini and four types of ducts according to diameter. The acini were either small and intermediate or large. The small acini revealed a big difference in diameter between camel and sheep and a similar diameter in goat and camel; ox and sheep. The intermediate acini showed a big difference between camel, ox and sheep. The large acini showed a big difference in diameter between camel, ox and sheep; ox, sheep and goat. The ducts were intercalated, striated, interlobular and interlobar ducts. The intercalated duct showed a slight difference in diameter among camel, ox, goat and sheep; a big significant difference between camel and sheep was observed. The striated duct showed a big significant difference between ox and goat and sheep and ox but the diameter was almost similar in camel, ox and sheep. The interlobular duct had the same diameter in camel, ox and sheep and a big difference was observed between goat and the rest of animals. The interlobar duct showed the greatest diameter in the goat, whereas in camel, ox and sheep the diameters were similar. The carbohydrate observations showed generally a difference in degree of PAS-positive, AB- positive and PAS/AB sequence reaction among the animals used and especially in the parenchyma of gland of camel
