Reaction of the exocrine pancreatic tissue to the changes in the structure of the diet
1993
Sachelarie, F. | Trandaburu, T. | Petrescu, A. | Negulescu, G.P. (Institutul de Biologie si Nutritie Animala, Balotesti (Romania))
The researches aimed at studying the secretor activity of the exocrine pancreatic tissue in fattening pigs according to various diets. A number of 4, 70 kg pigs was used in the experiment as follows: 3 controls slaughtered ante-and post-prandially; 1 experimental slaughtered intraprandially after ingestion of enzymatycally pre-digested protein feed. The pancreas samples were processed according to the usual techniques for both optical and electronic microscopy. The optical microscopy revealed that in the controls slaughtered ante-and post-prandially the pancreatic tissue has a normal aspect with rather large amounts of zymogen granules distributed relatively uniformly in most of the acinar cells, sometimes with a preponderant apical disposition. In the control animal slaughtered post-prandially the characteristic modification is the reduced degranulation of the acinar cells; in the experimental animal which received the enzymatically pre-digested protein feed several changes were noticed such as: cytoplasm removal in the acinaric cells and sometimes the presence of nuclei with picnotic aspect, all these suggesting a slight reduction of the secretor activity. The ultrastructural changes show a stimulation of the secretor activity of the pancreas in normal post-prandial conditions and a slight reduction of this activity after intraprandial administration of a protein feed enzymatically pre-digested with pancreatic exoenzymes.
اظهر المزيد [+] اقل [-]