HISTOMORPHOMETRICAL STUDIES ON THE SPLEEN OF LOHMANN BROWN LAYERS TREATED WITH CRYSTALLINE PROGESTERONE

Résumé

The study determined the effect of Crystalline Progesterone (CP) on eighteen Lohmann Brown layers. Completely randomized design was used with each treatment (0, 5, 10, 15, 20 and 25 mg per bird) administered intramuscularly via the breast muscle and replicated thrice for six weeks. Data were analyzed using GraphPad InStat®package. Results revealed non-significant (P>0.05) effect of CP proportion of spleen vascular skeleton and B follicles were not significantly different and proportion of spleen red pulp (0 mg vs. 15 mg = 80% vs. 40%) and ellipsoids and peri-arteriolar lymphoid sheath (PALS) (0 mg vs. 15 mg = 10% vs. 50%). CP affected proportion of spleen red pulp and ellipsoids and PALS.