Rizikové faktory potravového reťazca V

Abstract In this study the effect of single cadmium, cadmium + selenium and cadmium + zinc administration on the ovarian structure of Japanese quails was studied. The morphometric analysis of the relative volume of primary follicles detected the highest value in control group with a similar value in the group with administration of cadmium with selenium. Lower relative volume is reported in group with cadmium and zinc administration and the group with simple cadmium administration (P<0.05). The relative volume of growing follicles was very similar in all studied groups (11.33 -15.35%), and the relative volume of stroma was very stable (82.59 -86.45%). In the evaluation of the number of follicles undergoing atresia significantly higher number of atretic primary follicles as well as growing follicles in the group with cadmium administration and cadmium with selenium administration in comparison with control group was found. In comparison of normal and atretic follicles we report the most negative effect on ovarian structure in group with cadmium administration. Selenium co-administration show protective effects but only the co-administration with zinc prevent significant cadmium ovarian alterations